ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Fisheries  (193)
  • Ecology  (165)
  • Biochemistry and Biotechnology
  • Iranian Fisheries Science Research Institute  (345)
  • 101
    facet.materialart.
    Unknown
    Identification of native fishes of west Azarbaijan province phase 2 (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25539 | 18721 | 2018-10-05 16:22:36 | 25539 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The aim of this research was to identify the species of freshwater fishes in the water rssoureces located at Urmieh Lake and Zagros catchment area of West Azarbaiigan Province. Sampling was done seasonally with the determination and selection of sampling station on main and secondary branches of different rivers including; Zarineh rud, Simineh rud, Mahabad chay, Shahr chay, Nazlu chay, Baranduz chay, Godar and Zab river. Fish samples catched with different tools include Electroshoker, Cast net and buy from local fisherman, fixed in 10 % formalin and transferred to the laboratory for biological and identify hnvestigation. 42 fish species belonging to 7 family comprising of Syprinidae, Balitoridae, Cobitidae, Siluridae, Poeciliidae, Salmonidae and Mastacembelidae have been identified. Among them Syprinidae family with 32 species had a highest diversity.
    Keywords: Biology ; Fisheries ; Iran ; West Azarbaiigan Province ; Identification ; Fish ; Native fishes ; Freshwater ; Syprinidae ; Balitoridae ; Cobitidae ; Siluridae ; Poeciliidae ; Salmonidae ; Mastacembelidae ; Species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 99
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 102
    facet.materialart.
    Unknown
    Monitoring of fisheries resources in artificial reefs in east of Kish Island waters (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25561 | 18721 | 2018-10-06 16:10:16 | 25561 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Artificial reefs are manmade materials deployed under water in order to improve environment and increase the exploitation of fishing area. Usage of artificial technic has developed due to increase of world population and need to supply of protein, aim to restoring of natural specially rehabilitation of demersal fishes. It has effected to increase the production in order sustainable exploitation. Coasts and Islands have destruction due to over harvesting from ecosystems and other activities by humans and natural, these caused many aquatic as demersal fishes has endangered in Persian Gulf and Oman Sea. The artificial reef is one way or method that can improve the environment and restore the aquatic. Iranian fisheries has established an artificial reefs area in west of Kish Island. This area has studied during one year, Data of assembled fishes and physical sampling were collected in seasonal during spring, summer, autumn and wintered. There were tow treatment for sampling as artificial reefs site and a control site. Collected data has analyzed and evaluated by SPSS and Exel. The results showed that there was significant difference between the sites and assembled fishes in artificial reefs were more than control site. Consequently the artificial reefs can be a tool and technic to improve the marine environment and increase the production of fishes, especially the demersal fishes.
    Keywords: Ecology ; Iran ; Persian Gulf ; Kish Island ; Coastal Development ; Fish Production ; Marine ; Artificial reefs ; Fisheries ; Population ; Environment ; Demersal fishes
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 72
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 103
    facet.materialart.
    Unknown
    Stock assessment of freshwater crayfish (Astacus leptodactylus) in Aras reservoir (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25567 | 18721 | 2018-10-05 17:27:57 | 25567 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: 360 funnel traps were prepared as 30 in one row. They were bitted and located in different depths in sampling sites. Two rows each composed of 30 traps were located by stone, linking rope and boat with 50 m distance in sampling stations. The results showed that the average of total length of caught crayfish was 106.26±12.89 mm and their mean weight was 38.79 ± 15.54 gr. The largest crayfish had 171 mm length and 216 g weight. Also mean of total CPUE was 9.72±4.49 individuals in the study period. The evaluation by Schnabel approach indicated that fluctuation range of freshwater crayfish biomass with more than 120mm length was 131-313 with an average of 212.59 ±30.23 kilograms per ha. In this study freshwater crayfish biomass with more than 120mm length was 247 × 10^3 kilograms. The Maximum Sustainable Yield (MSY) was estimated 83 × 10^3 kilograms. In this study ّFecundity and biometry of crayfish (Astacus leptodactylus) was investigated during 2012-2013. The results showed that the average of total length of caught crayfish was 106.26±12.89 mm and their mean weight was 38.79 ± 15.54 gr. The largest crayfish had 171 mm length and 216 g weight. Mean number of ovarian and pleopodal eggs were estimated at 286 ± 82 and 246.31 ± 80.41 eggs (with 95% confidence limits), respectively. In this research, male to female ratio was obtained 1.21:1. The time of male moulting at 16°C was started from April and was ended in the late May, when the water temperature reached to 18° C. The second moulting of males and the first moulting of females was performed simultaneously in 18°C water temperature at September. Reproduction of freshwater crayfish was started from November and continued to May of the next year. Harvesting period was from May to late November.
    Keywords: Fisheries ; Iran ; West Azerbaijan ; Aras reservoir ; Freshwater ; Crayfish ; Astacus leptodactylus ; Fecundity ; Biometry ; Population changes
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 104
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 104
    facet.materialart.
    Unknown
    Collection of information about sturgeon fish processing and processed products (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25575 | 18721 | 2018-10-06 17:27:32 | 25575 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Sturgeon is one of the most important fish. The important of these fish is related to the it’s caviar and meat. Addition of caviar and meat, other products which are produced from the other part of the fish like head, viscera, skin are also important. The remaining residue and waste processing sturgeon has been about 50 percent value-added capabilities into side products such as skin leather, glue the swim bladder, internal organs and the sauce ,as well as the production of medical products such as oil, protein, vitamins and health products such as cartilage capsules in cosmetic creams caviar pulp is , examples of these products are produced in other countries and industries for Sale Collection data from the processing view from the sturgeon fishes in this report has been tried and amount of data also collected, this report has been tried and good information’s also collected. This report is in privilege of national fish processing center a branch of fishery research institute of Iran, the data contains as ,Sturgeon fish meat processing, Sturgeon fish by-products, Sturgeon caviar processing.
    Keywords: Fisheries ; Iran ; Sturgeon fishes ; By products ; Industrial processing ; Caviar ; Viscera ; Skin ; Protein ; Vitamins ; Fishery
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 32
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 105
    facet.materialart.
    Unknown
    An investigation on possibility of nile tilapia (Oreochromis niloticus) feminization under the condition of brackish water in Bafgh (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25574 | 18721 | 2018-10-06 12:10:40 | 25574 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was aimed to investigate the effect of different doses of oral diethylstilbestrol (DES) on feminization of Nile tilapia (Oreochromis niloticus) larvae under the condition of brackish water in Bafgh fisheries research center. This Experiment was comprised of two control groups in two replicates and two experimental ones in three replicates. At the beginning of the trial, a number of 2150 larvae were randomly distributed among 10 replicates that were under treatment for 45 days. The diets in two control groups, i.e. non-treated, C1, and ethanol treated feed, C2, and the ones in two experimental groups, i.e. 200 and 400 mg DES/k of feed, E1 and E2, were administrated to 7 day post fertilization (dpf) larvae for a period of 35 days and then until day 45, the larvae were fed with ordinary feed. At the end of the trial, the gender ratio of larvae in different groups was determined by squash test in 50 randomly selected individuals from each replicate. The results showed no significant differences for gender ratios within control groups (respective male to female ratio in C1 and C2 was 47:53 and 57:43). However, the corresponding ratios within experimental ones, fed with 200 and 400 mg DES/k of feed respectively, was significantly different (P〈0.05). Noteworthy that the percent of females between two experimental groups (E1 and E2) was not significantly different (70.0 and 64.7 respectively) but it was significantly different with ratios in experimental groups (P〈0.05). The total body length and live body weight were determined at the begging and then at day 30 and 45, it was randomly measured in 20 larvae from each replicate. At the beginning of the experiment, the mean body weight and total length of larvae was 0.012 gram and 1.03 centimeter respectively. The respective averages at day 30 and 45 were significantly different among groups (P〈0.05). Survival rate was significantly different among groups (P〈0.05), being highest in E1 and E2 respectively whereas lowest in control ones (56.51 and 58.84 in C1 and C2 respectively).
    Keywords: Aquaculture ; Iran ; Bafgh ; Nile tilapia ; Feminization ; Diethylstilbestrol ; Brackish Water ; Oreochromis niloticus ; Fisheries ; Fertilization ; Larvae ; Females ; Survival rate
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 34
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 106
    facet.materialart.
    Unknown
    The survey statistical and biological of sturgeon in the southern Caspian Sea (Mazandaran waters) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25582 | 18721 | 2018-10-07 10:46:51 | 25582 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study have been conducted entitle biological and statistical sturgeon in the southern Caspian Sea (Mazandaran waters)” from 2009 to 2013. Sampling was manthly. Overal, 1859 specimens of different species of sturgeon was caught including Acipenserpersicus (69%), A. stellatus (19%), Husohuso (6%), A. nudiventris (4%) and A. guldenstaedtii (2%). Totally, the meat and caviar of five species were found 53263.6 kg and 5633 kg respectively and caviar to meat ratio was 10.6%. The results show that ration of meat and caviar whole species reduced from 2009 to 2012 in which the meat and caviar of A. persicus was declined from 12146 to 4465 kg in meat and caviar from 1358 to 487 kg were extremely reduced respectively. The CPUE (catch per unit effort) of sturgeon has fluctuated from 2009 to 2012. Totally, the CPUE of A. persicus was decreased from 0.150 (2009) to 0.130 (2012) kg boat per day, A. stellatue from 0.009 (2009) to 0.021 (2012) kg boat/day, A. guldenstaedtii from 0.002 (2009) to 0.003 (2012) kg boat/day, A. nudiventris from 0.027 (2009) to 0.001 (2012) kg boat/day and H. huso from 0.123 (2009) to 0.018 (2012) kg boat /day. 1061 specimens of fish has been caviar including A. persicus with 69%, A. stellatus (18.1%), H. huso (5.5%), A. guldenstaedtii (2.7%). The frequency of caviar categorize was included 1 , 2, 3 and massive with 49.6%, 38%), 10.6% and 1.9% , respectively. The highest of meat and caviar belong to A. persicus with 31414 kg and 3515.7 kg, respectively were found and the lowest was 841kg and 105.9 kg pertain to A. guldenstaedtii. The results show that 65.9% of sturgeon was caught by legal catch (landing) and 34.1% by beach seine remained. 391 individuals was age determined that the minimum and maximum age was 9 and 41 year comprised to H.huso and A. stellatus, respectively. A. persicus and A. stellatus were majority caught compare to other species. A. persicus has the highest frequency in 14-15 year age groups with 50% and 57% in 2009 and 2011, respectively and 15-16 year age group with 41% and 56% in 2010 and 2012, respectively. The results show that mean of fork length, body weight, caviar weight of A. persicus was declined because the FL and weight average (±SD) obtained from 152.4±16.7cm and 25.8±9.2 kg in 2009 to 146.5± 18.7cm and 22.1±9.2kg in 2012, respectively. In contrast, the average (±SD) FL and weight of H. huso was increased from 218.8±41.1cm and 137.3±96.6kg in 2009 to 231.3±45.2cm in FL and 146.2±78.5kg body weight in 2012, respectively. Consequently, the results show that stocks of sturgeon in the Caspian Sea has a trend declined because of some species in IUCN categorize list was Endangered in 2006 but at this moment lie in Critically Endangered list of IUCN categorize were down which could be a serious alarm for the valuable sturgeon fish in the Caspian Sea. Therefore, recommendation that trade catch of sturgeon in the Caspian Sea must be forbidden and continue legal catch for spawner fish that needede to artificial propagation only.
    Keywords: Biology ; Ecology ; Iran ; Caspian Sea ; Mazandaran waters ; Biology ; Sturgeons ; A. persicus ; A. stellatus ; A. guldenstaedtii ; A. nudiventris ; H. huso ; CPUE ; Survey ; Sampling ; Species ; Caviar
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 136
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 107
    facet.materialart.
    Unknown
    Comparing evaluation of trimming machinery in the silver carp fillet (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25219 | 18721 | 2018-09-06 05:00:53 | 25219 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Trimming means is cutting fillet for a better shape, packing and marketing. The objective of this study was comparing trimming by hand and machinery from Silver Carp fillet. The aims of this project introduce best type of fillet trimming and machine for Silver Carp fillet. For first time we measured percentage different organs like head , skin, tails, intestine organs , type of bone and fillet in whole fish before and after cutting , filleting and trimming . The results show percentage of waste in trimming by machinery line processing was less than handing, and fillet trimming speed by hand was most than machinery. Also final results of this study show machinery method or complex of handing and machinery for Silver Carp fillet trimming are best.
    Keywords: Fisheries ; Iran ; Trimming ; Silver carp ; Fish fillet ; Fish bone ; Evaluation ; Hypophthalmiehthys molitrix
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 59
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 108
    facet.materialart.
    Unknown
    Population genetic study on two commercial shrimp species and determining of DNA-Barcoding of 6 – 8 species by partial sequencing of mtDNA using molecular method (PCR-Sequencing) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25624 | 18721 | 2018-10-07 16:36:06 | 25624 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Barcodes are short segments of DNA that can be used to uniquely identify an unknown specimen to species, particularly when diagnostic morphological features are absent. These sequences could offer a new forensic tool in plant and animal conservation especially for endangered species. Ideally, barcodes could be used to positively identify illegally obtained material even in cases where diagnostic features have been purposefully removed or to release confiscated organisms into the proper breeding population. In the present study molecular data were used besides the morphological ones to introduce a specific barcode for six selected species of Shrimp. Based on the previous phylogenetics study, it has been proved that the mitochondrial COI gene in crustacean is a good discriminative marker at both inter- and intra-specific levels. In this regard, six species of shrimp (Fenoro penaeus indicus, Fenoro penaeus merguensis, penaeus semisulcatus, Metapenaeus affinis, Marsupenaeus japonicas, Fenoro penaeus penicillatus were collected from the Persian Gulf and Oman sea. After identification, the total DNA was extracted; COI gene was first amplified and then sequenced for each species. Finally the collected data were analyzed with the specific phylogenetic software. Molecular analysis revealed some degree of interpopulation differences but six good species were recognizable based on COI sequences. Also for population study molecular data of two species Penaeus semisulcatus and Metapenaeus affinis were analysed base on COI RFLP and 16SrRNA sequences respectively. The results would be helpful to protect shrimp species.
    Keywords: Biology ; Fisheries ; Iran ; Persian Gulf ; Oman Sea ; Population ; Genetic ; Shrimp ; Species ; DNA barcoding ; Partial sequencing ; mtDNA ; Molecular method ; PCR ; Fenoro penaeus indicus ; Fenoro penaeus merguensis ; Penaeus Semisulcatus ; Metapenaeus affinis ; Marsupenaeus japonicas ; Fenoro penaeus penicillatus
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 74
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 109
    facet.materialart.
    Unknown
    The study of physical, chemical and biological Tagan and Sorkhrod River on time realize fingerling Rutilus frisii kutum (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25628 | 18721 | 2018-10-08 07:16:43 | 25628 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In this study, the Tagan and Sorkh rod River in province in the northwest region of Iran, were consider and physico-chemical water parameters, phytoplankton, zooplankton and benthos cumunity, were identify and were measured also measured some organoic toxin (in water) during a year (2011 )all conducted was done at three stations. The purpose of this study was to assess the quality of water for aquaculture activities and realizing fingerling fish. In most cases between Physico-chemical parameters in Tagan and Sorkhrod river in EC, TDS ,SAL,NH4, Ca, Mg difference was statistically significant (P〈0.05). Mean physico-chemical factors including water temperature in Tagan and Sorkhrod river respectivity 27±0.95,26.4±0.67±,25.6°C, DO: 7.4±0.16, 7.8±0.14 mg.l^-1; pH: 7.97±0.5, 7.77±0.6, TDS: 7994±557, 1317±257 mg.l^-1; EC: 11920 ±838, 1583±368 µ.cm^-1; Ca: 470±57 ,Mg: 57±11 mg.l^-1, NH4^+ : 0.390±0.05 , 0.141±0.03 mg.l^-1; NO2^- : 0.030 ±0.007, 0.034±0.032 mg.l^-1; NO3^- : 0.330±0.085 ,0.420±0.034 mg.l^-1; PO4^-3: 0.049±0.003 to 0.051±0.007 mg.l^-1; salinity:10091±746, 1247±238 mg.l^-1and total hardness: 3600±460, 406±76 mg.l^-1 calcium carbonate, respectively. The samples water from Tagan ,Sorkhrod , Tonekabon and Shirod river have organo clore toxin enclouded: g- BHC, B-Endosulfan, Endosulfan sulfate. Aldrin, DDD Heptachlor, Lindane. Results showed that concentrations of o,c.t in cases were not the limit of detection. Range of this option maximom to minimom in river were 0.10 to 0.22 mg/l. this result keep in renge of organization U.S.A .This level not dangerous for live and realize figerling fish. Phytoplankton: The phytoplankton species were identified from the five phyla, including 56 species in sorkhrod and 52 species in tagan river. In Tagan Bacillariophyta and Chlorophyta phyla 75% of total percentage phyto and in sorkhrod Bacillariophyta and Chlorophyta, 93% of total percentage phytoplankton. Zooplankton: During the study period, four major groups Holozooplankton including Rotatoria and protozoa, Copepoda and Cladocera in Tagan river and Sorkhrod were observed. Macro benthos: The benthos species were identified from the seven family, including, Cardidae, Spionidae, Tubificidae ،Lumbriculidae, Lumbricidae, Chironomidae Elmidae. Comparison Mean biomas between Tagan and Sorkhrod show, sorkhrod with 3.4g/m^3 biomas in tagan with0.32g/m^3 biomas has beter coundithion for realize finger ling Rutilus frisii katum.
    Keywords: Aquaculture ; Ecology ; Iran ; Sorkhrod river ; Tagan ; Physico-chemical ; Water quality ; Parameter biologic ; Rutilus frisii katum ; Fingerlings
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 50
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 110
    facet.materialart.
    Unknown
    A survey on some risk factors and evaluation of their impacts on streptococcosis incidence in rainbow trout farms in west of Mazandaran province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25632 | 18721 | 2018-10-08 07:24:27 | 25632 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study aimed to investigate the effects of 5- parameter dissolved oxygen, PH, nitrite, nitrate and temperature of the water on Streptococcosis incidence in two groups of fry and grower fish. Research was performed at west Mazandaran province -Tonkabon region in 12 rainbow trout selected farms. Research conducted in 3 farms with well source water, 8 farms with water source of the river of Dohezar and one farm with water source of the river of Azarood, during 12 consecutive months. From 1390.04.01 to 1391.04.01, once time each month, and in each time 10 fish randomly sampled, inlet water were sampled simultaneously Of 1350 sampled fish 607 fish with an average weight 22.04 gr, average length 12.59 cm were in fry category and 743 fish with an average weight 156.25 gr, average length 23.32 cm in were grower category. Streptococcosis observed only in grower category Of 72 fish with clinical signs of the disease, 14 numbers were positive Streptococcosis (19.44%) and 58 numbers were negative Streptococcosis (80.55%). Three fish from grower category has not any clinical signs of disease and seemed to be healthy but were positive Streptococcosis in examinations (0.22% of total fish sampled. Fish with clinical signs of the disease but negative Streptococcosis were of at least 55.1 gr and at most weight 417 gr respectively. The results showed that 47.07% cases of Streptococcosis happened at 15.6°C water temperature, 35.29% at 16.98°C and 17.64% cases happened at 18.04°C so that 100% of Streptococcosis cases was observed at the average temperature of 16.99°C. In addition, the survey results show that despite relatively high levels of nitrite in source water of farms from wells, nitrite does not effect on the disease incidence. It seems that an optimal level of dissolved oxygen in water is effective in reducing the effectiveness of nitrite in this disease. According to equation coefficients logit model is as follows: According to Logit model, it seems that for every degree change in temperature and pH of water, morbidity change will diminish 0.37 % and 1.74 % respectively. 80.56% of fish sampled that had the clinical symptoms, was ranging from an average weight of 5.1 gr (fry) and 417 gr (grower fish), that despite having clinical signs of the disease were negative Streptococcosis. Isolation of Staphylococcus bacteria as well as Gram-negative bacilli from fish with clinical symptoms similar to the symptoms of Streptococcosis, may indicate the involvement of other pathogens in fish clinical signs.
    Keywords: Ecology ; Iran ; Mazandaran Province ; Tonkabon ; Streptococcusis ; Risk factors ; Cold water fish ; Survey ; Rainbow trout ; Dissolved oxygen ; pH ; Nitrite ; Clinical signs ; Temperature ; Pathogen
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 60
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 111
    facet.materialart.
    Unknown
    Study of possibilities of aquaculture activities in the Gorgan Bay (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25644 | 18721 | 2018-10-08 08:25:33 | 25644 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The Gorgan Bay has situated in the South east of the Caspian Sea and water entersthe Bay from the Sea .it covers an area about 450 squar kilometers that is connected to the sea only by the passage of Ashouradeh in the north east of the bay . The water balance is almost constant and is not tidal. In this study, a model made for the bay on the basis of its water quality and quantity. Its reactions evaluated under different qualified scenarios and its surrounding water quality survey during next 29 years. Mike 21 software was used for 2 dimensional modeling . At first hydrodynamic modeling of the bay was done .one of the important factor was water depth which calculated by hydrography method of the bay. Then, a model made for the salinity of the bay. Since, salinity is a stable parameter, a sub-program TM (Mike 21) which has the ability to make a model from the process of advection – dispersion was used. The amount of Manning (0.025) and Dispersion (50) coefficient calculated simultaneously with calibration of salinity model (D:square meter / second). Results from data verification of salinity model indicated about 3 percent mean error. The pollution dispersion type in the bay evaluated at six points of the bay using the method of dot constant source of pollution. Results showed that around 99.9 percent of pollution decreases under the effect of dilution process till the 100 m distance. Then modeling of dissolved oxygen, Ammonia, nitrite and nitrate was done by using of subprogram ECOLAB at the Mike software To make these models, first the sensitivity analysis of these parameters was done. Important parameters chose for model calibration and then data verified and also the model calibrated. The result of data verification test showed the mean error of oxygen, ammonia, nitrite and nitrate were respectively about 3, 4, 6.3 and 37 percent. Then modeling made according to four different scenarios which defined on the basis of pollutions originated from aquaculture in the bay (scenario 1: aquaculture at the first half year. Scenario 2: aquaculture at the 2nd half year. Scenario 3: aquaculture at the whole of year. Scenario 4: cultivation of bluga for 3 years). Water quality of the bay and also different amount of aquaculture production surveyed during next 29 years under different scenarios of aquacultures. The places under pollution were included the appropriate places for aquacultures in each scenario that was already determined at the bay .Then the reaction of the Gorgan bay was determined under each scenario. The curves of pollution fluctuations were drawn along with amount of cultivation at the each scenario. At last, appropriate amount of cultivation was calculated at each scenario with considering of self-purification of the bay that does not tend to pollution of the bay. On the other hand, the farms arrange, distances between farms and the number of cultivation ponds at the each farm was calculated. Finally, results showed that the aquaculture capacity of the bay is less than 300 tons per year.
    Keywords: Aquaculture ; Ecology ; Iran ; Caspian Sea ; Gorgan Bay ; Aquaculture ; Salinity ; Pollution ; Dissolved oxygen ; Ammonia ; Nitrite ; Cultivation ; Beluga ; Self purification
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 92
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 112
    facet.materialart.
    Unknown
    The use of lactic acid bacteria metabolites (nisin and organic acids) for the shelf life extension of trout (Oncorhynchus mykiss) and their effect on dominant bacteria in inoculation study (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25650 | 18721 | 2018-10-14 02:41:46 | 25650 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Nisin is a natural antimicrobial and has inhibitory effect on the pathogens and spoilage organisms. The efficiency of nisin reduced after reaction with food compounds. There is the hypothesis that combination of nisin with organic salt increases the shelf life of fish. The purpose of this study was mainly to evaluate the effects of nisin (0.15 %) and sodium acetate ( 1% ) individually and in combination on shelf life of fillets and whole trout ( without viscera). then, the behavior of Listeria monocytogenes and Clostridium botulinum type E were evaluated in different time at 40C. Physical and chemical parameters including: pH, Peroxide Value (PV), Tiobarbithoric Acid (TBA) and Total Volatile Nitrogen (TVN) and bacterial factors such as Total Viable Count (TVC), Pscycrothophic Count (PTC) and Lactic Acid Bacteria (LAB) were examined. These parameters were done at intervals of 4 days for 16 days. Results showed that chemical and bacterial factors of whole trout (Oncorhynchus mykiss) (without viscera) have been more favorable than the fillets . It also showed that the peroxide value, the thiobarbituric acid, volatile nitrogen bases, and pH in combination of sodium acetate and nisin Z treatments were exposed to significantly compared to control treatments (no preservatives) (P〈0.05). Treatments with sodium acetate and nisin Z (individual) were exist after combination treatment. Hence it can be concluded that the maximum shelf life of in preservative treatments was 16 days, but control treatment was 12 days in some cases and in some cases 16 days. Effects of treatments on Listeria monocytogenes and Clostridium botulinum in the control treatment showed the highest growth was observed in both species (log 8) but in single and combined treatment of bacterial growth slower , but is still the trend the 16th day of so Listeria and Clostridium log 5 to log 6, respectively. Vegetative cells of Clostridium were more sensitive in compare to Listeria. When using preservatives (chemical or biological) in fish tissue, parameters such as the type of preservative, used method, pH, proteolytic enzymes, and the incidence of resistant strains and so on influence of antimicrobial agents used. The overall conclusion of the study was shelf life of whole trout (without viscera) was more than fillets, combination of nisin and sodium acetate were better than other treatment and finally higher doses of bilogival preservatives are need to for achieve to significant reduction of pathogenic bacteria.
    Keywords: Fisheries ; Iran ; Nisin Z ; Sodium acetate ; Rainbow trout ; Listeria ; Monocytogenes ; Clostridium botulinum ; Lactic Acid ; Bacteria ; Organic acids ; Oncorhynchus mykiss ; Pathogen
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 94
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 113
    facet.materialart.
    Unknown
    Hydrology, hydrobiology and environmental pollution in the southern Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25643 | 18721 | 2018-10-14 02:41:14 | 25643 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The project investigates the relationship between the biological parameters (phytoplankton, zooplankton, Macrobenthic and ctenophore- Mnemiopsis leidyi) and environmental parameters, nutrients and environmental pollutants (oil, pesticides, heavy metals, and detergents) in water and sediment, at the southern Caspian Sea in 2010-2011. Sampling was carried out in four seasons (spring, summer, autumn and winter) and in eight transects perpendicular to the coast (Astara, Anzali, Sefidroud, Tonekabon, Noshahr, Babolsar, Amir Abad and Bandar Turkmen). Samples were collected from the different layers at depths of 5, 10, 20, 50 and 100 meters. The relationship between biological and environmental parameters surveyed through parametric and multivariate statistical methods. Result showed that the annual mean of environmental parameters and nutrients concentration such as water temperature, pH, transparency, DO, ammonium, nitrate, inorganic nitrogen (DIN), organic nitrogen (DON), inorganic phosphorus (DIP), organic phosphorus (DOP) and soluble silicon (DSi) at euphotic layer were 16.70±0.43 (ºC), 8.38±0.01 (m), 5.48±0.05 (ml/l), 1.52±0.06 (µM), 1.80±0.08 (µM), 3.41±0.10 (µM), 43.3±0.9 (µM), 0.32±0.01 (µM), 0.52±0.02 (µM), 8.88±0.22 (µM), respectively. Meanwhile, annual mean of environmental pollutant such as PAHs and OCPs in sediment were recorded 0.88±0.16 (µg/g.dw) and 9.78±2.20 (µg/g.dw), respectively. In addition, annual mean of heavy metals such as Zn, Cu, Ni, Pb and Hg in sediment were obtained 247±46 (µg/g.dw), 29.5±1.5 (µg/g.dw), 49.9±4.9 (µg/g.dw) and 0.179±0.800 (µg/g.dw), respectively. Annual mean abundance of biological parameters namely phytoplankton, zooplankton and M. leidyi (0-20m) at photic layer were 238±17 (million cells/m^3), 4808±362 (individuals/m^3) and 26±3 (individuals /m^3) respectively, and for biomass were 747±60 (mg/m3), 44.3±5.0 (mg/m^3), 2.15±0.31 (g/m^3). Annual mean abundance of those biological parameters at below of photic layer (50-100m) were 104±35 (million cells/m^3), 843±92 (individuals/m^3) and 2±1 (individuals /m^3) respectively, and for biomass were 412±93 (mg/m3), 9.1±1.0 (mg/m^3), 0.15±0.05 (g/m^3). Annual mean abundance and biomass of macrobenthic were 5073±1225 (individuals /m^2) and 144±73 (g/m^2), respectively. Annual mean annual percentage of TOM, Gravel, Sand and Silt-clay were recorded 3.74±0.26, 0.92±0.32 , 22.51±4.97 and 76.67±5.01, respectively. The stratification of water column was strongly based on gradient of water temperature and the phenomenon (difference of temperature between water layers) was more clear in this study compared to previous years. Temperature and biological factors (phytoplankton) were effected on changes of dissolved oxygen at warm and cold seasons summer and winter), but coefficient factor of temperature was higher than biological factors in winter. The nutrients concentration (with the exception of inorganic phosphorus) in different years 2008-2009, 2009-2010 and 2010-2011 increased compared to 1995-1996 (the year of stability of ecosystem). One of the reason attribute to the presence of the ctenophore (M. leidyi) in Caspian Sea after 1999. The annual correlation of phytoplankton abundance and temperature was reversed but seasonal pattern was varied at each season (within a year). In this study, the Caspian Sea contained the conditions of nitrogen limitation (55%) and nitrogenphosphorus limitation (6-43%) as well as phosphate limitation (2-39%) (DIN/DIP〉20) . Inspite of no silica limitation (sufficient concentration of silica) in the Caspian ecosystem, Bacillariophyta was not dominance phylum at whole seasons.It seems that other factors such as the temperature changes of seasons, the effects of predation and feeding of the next chains of the food chain, the difference of the ability in the growth and reproduction, competition (uptake of nutrients) in dfferent groups of phytoplankton and stoichiometry of the nutrients (nitrogen and phosphorus) were caused of non-diatoms dominance at most seasons. As, Pyrrophyta and Bacillariophyta were dominant at spring and winter, respectively and Cyanophyta was pre-dominant at summer and autumn. Multivariate analysis showed the significant correlation between Coppepoda and oxygen and water temperature only. The other gropus of zooplankton did not show any significant correlation with environmental parameters. It might be due to stronger effects of other parameters such as food and predators on different groups of zooplankton at each season and abundance of zooplankton groups indirectly affected by environmental parameters. In this study, Shannon diversity indices of zooplankton and phytoplankton were closer to 1995-96 values and showed diferent trend compared to 2009-2010. However it is not enough reason for recovery of ecosystem in to the stability of Caspian Sea. It is because of other negative evidiance such as strong increasing trend of phytoplankton to zooplankton biomass ratio in all seasons and regions particularly the 2009-2010 and 2010-2011 years compared to 1995-96 (the year of stable ecosystem). In the other word, the balance between the biomass of the first and second of the food chain has been disturbed and the value was much much higher than the year of stable ecosystem in 1995-96. Based on multivariate analyses, there was not significant correlation between zooplankton groups and some edible phytoplankton species, vise versa zooplankton groups consumed some unsuitable species of phytoplankton (based on size, nutritional value, difficulty of digestion and absorption, the potential of toxicity and harmfulness). The lack of expected relationship and routine rules of nutritional between zooplankton and phytoplankton are the more resons of instability in the ecosystem. In current study, dominant group of macrobenthos (polychaeta) observed in depths less than 20 meters which the percentage of silt-clay and sand were 74 and 26, respectively. It seems that this ratio of silt-caly and sand was suitable for their living and accumulation. PCA analysis showed that increasing the percentage of TOM and siltclay accompanied to the decreasing of macrobenthos abundance while increasing the temperature, dissolved oxygen and pH had a positive effect on macrobenthos abundance in most seasons. Increasing the abundance of macrobenthos at all seasons (except spring) would not be a strong indication of improvement of Caspian ecosystem after the ctenophore introduction stress and unfavorable evidence such as low Shannon diversity index observe in the results. Meanwhile, in the present study, Streblospio and oligochaeta (invasive growth and advantage to the food uptake and habitat and sediment seeding) similar to the years of 2008-2009, 2009-2010 still were dominant groups insteade of Gammaridae family (feeding on suspended solids). This means that sediment has a noteworthy amount of organic matter which indicate to the trophic level of ecosystem tend to eutrophy level. The comparison of results on this study to previous studies on biological parameters (phytoplankton, zooplankton and macrobenthos) indicating to the persistence of stress (such as biological and anthropogenic) on their changing population patterns (quantitative relationships between species) and structural patterns (species composition and seasonal succession of dominant species). In other words, many species (both macroscopic and microscopic) of the Caspian Sea are still vulnerable to complications of stressor factors. In order to protection and sustainable exploitation of this worth ecosystem it is necessary to look more serious studies and practical techniques from the relevant organizations in this area.
    Keywords: Ecology ; Pollution ; Iran ; Caspian Sea ; Astara ; Anzali ; Tonekabon ; Noshahr ; Babolsar
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 164
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 114
    facet.materialart.
    Unknown
    Population genetic study on croaker species Atrobucca nibe in Persian Gulf and Oman Sea using molecular methods (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25638 | 18721 | 2018-10-08 08:22:14 | 25638 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Black Mouth Croaker (Atrobucca nibe) is of significant value from the economics point of view. In the following study, the genetic diversity of Atrobucca nibe has been investigated using the PCR-sequencing method from three different regions of the Persian gulf and Oman Sea, namely Chabahar in the Sistan and Baluchestan and Jask in Hormozgan Province of Iran and Fujairah in the Fujairah Emirate of the United Arab of Emirates. The purpose of the following exploration has essentially beencoined to further the study of Atrobucca nibe genetic diversity and its population structure in the Persian Gulf and Oman Sea. For this purpose, a number of 54 fish have been collected from the aforementioned regions. The DNA of the fish had been extracted through the Ammonium Acetate method and the quality of the DNAs were analyzed via the spectrophotometry and furthermore the quantity of the extracted DNA were assessed viaelectrophoresis. Polymerase Chain Reaction (PCR) was conducted on the targeted DNAs and thenceforth DNA sequencing was carried out. Subsequently, through sequencing it was discovered that the D-loop region in the mitochondrial DNA (mtDNA) of Black Mouth Croaker,contained 270 base pairs (bp). For the purpose of analyzing the genetic diversity of Atrobucca nibe and its population structure in the Persian Gulf and Oman Sea, the following softwares have been conducted, namely theBioEdit, Arlequin, Dnasp and Mega5 software. Furthermore, the Kimura 2-parameter was used for the purpose of genetic distance analysis. Through observations of average levels of FST between the regions, it can be summed up that genetic differences do exist among the present populations. On the grounds of the obtained results from the Persian Gulf and Oman Sea, it can be concluded that there currently are three different populations of Atrobucca nibe residing in the waters of Sistan & Baluchestan, Hormozgan and Fujairah.
    Keywords: Biology ; Fisheries ; Iran ; Oman Sea ; Persian Gulf ; Hormozgan Province ; Sistan and Baluchestan province ; Chabahar ; Jask ; Atrobucca nibe ; Genetic diversity ; PCR - Sequencing ; Population ; Genetic ; Croaker Fish ; Species ; Molecular method ; Black Mouth Croaker ; DNA ; Ammonium Acetate method
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 78
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 115
    facet.materialart.
    Unknown
    Monitoring of fresh water fish farms in north of khouzestan province for mortality emphasis on silver carp (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25647 | 18721 | 2018-10-08 08:31:58 | 25647 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Carp fishes culture is one of the most important subsector fisheries industry in Khouzestan province. Every year in summer high mortality occurred in carp fishes farms specially in silver carp of north Khouzestan province. Inspection of silver carp for identification microorganisms agents (Bacteria, Fungi, Parasite and virus: SVC,KHV), determine total plate count, examination physic chemical factors of farms water, histopathology, identification planktons, the main objectives of this study, which was held in 2012. 180 silver carp from 5 farms (10 ponds) with high mortality in years ago were collected in north Khouzestan province and then differents parts of fish body including: intestine, gills, body surface, eyes and liver were examined. Physico chemical parameters and plankton sampled monthly. Physico chemical parameters of water were measured all over culture period for 960 times as follows: Do(4.45-8.5 ppm), BOD5(1.1-9.25 ppm), temp(19-33c), pH(6.82-8.6), total hardness(348-10053), turbidity(5-56 FTU), Amonia(0.001- 0.06 ppm) and co2( 0.88-13.2). From a total 180 fish examined, 136 (75%) showed unknown algae infestation and 126 (70%) showed parasitic (Dactylogyrus, Gyrodactylus and metacercaria Diplostomum). The results of biotic parameters in farms showed that cyanophycae (Cylindropermopsis, Merismopedia and Nitzeshia) were the most group of phytoplanktons. Histopathological studies have shown necrosis in tobules kidney, degeneration hepatocyte and hyperplasia in gill cells and also results demonstrated the mean of total plate count (0-376 CFU/ml103). 60 samples with sighn severe hemorrhagic on surface body were collected for virology studies by PCR procedure (IQ2000 kit) and have shown which 3 sample suspected to KHV but SVC was not identified.
    Keywords: Aquaculture ; Iran ; Khouzestan Province ; Silver Carp ; Water physic chemical factor ; Microorganisms ; Histopathology ; Fresh water ; Mortality ; Fisheries ; Bacteria ; Fungi ; Parasite ; Virus ; Planktons ; Dactylogyrus ; Gyrodactylus ; Cyanophycae ; Cylindropermopsis ; Nitzeshia ; PCR
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 110
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 116
    facet.materialart.
    Unknown
    A survey of algal bloom impacts on abundance and distribution of macro benthos in Hormozgan province coastal waters (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25654 | 18721 | 2018-10-08 08:21:14 | 25654 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The investigation of the algal bloom effects on Macro benthos abundance and diversity was seasonally carried out in coastline waters of Hormozgan province in 1391. Fourteen stations were selected for sampling; as 8 stations in coast of Bandar Abbas, 3 in Jask Port (east of Hormozgan) and 3 stations in Lengeh Port (west of Hormozgan). Polychaets, oligochaets, mollusks, crustacean and others like nematodes, nemertean’s, foraminifera’s, and ophiuroides were identified. Crustacean with 333950 ind.^-2 were dominant group whereas nemertean with 5050 ind.^-2 were minimum in density. Results showed that mean abundance of macro benthos was at most in spring (5614±3992 end) ^-2 and with 1244±380 ind.-2 was at least in autumn. Related results to stations showed that mean abundance in Jask Port and Lengeh Port were more than Bandar Abbas City. Among 8 stations in Bandar Abbas, Langargah with 168±977 ind.^ -2 was at most and Posht-e- shahr was at least in abundance (82±256 ind. ^-2). In Lengeh and Jask ports the stations far from coasts showed more abundance than station near coast. Monthly investigation showed that Macro benthos community was much more in April with 1011±6783 ind.-2 than December with 6±28 ind.^-2 , respectively. Shannon -Winner diversity index was low (0.61.2) in three stations, Evenness ranged from 0.1 to 0.4 and Margalof ranged from 2 to 4. Among four stations, mean wet weight varied from 12.18±6/95 gr in Jask Port (maximum) to 6.24±3/85gr in Bandar Abbas (minimum) .Seasonally, in spring the wet weight of macro benthos was 15.15±16/32 (maximum) and with 1.43±0.88 gr showed the minimum value in summer. There was a negative correlation between silt and macro benthos abundance and a positive correlation existed between macro benthos community and sand. There was no significant correlation between macro benthos community and TOM. To pay attention to results like diversity, abundance, wet biomass and correlation; it seems that algal bloom has no obvious negative effect on Macro benthos communities.
    Keywords: Ecology ; Iran ; Hormozgan Province ; Bandar Abbas ; Lengeh ; Jask ; Algal bloom ; Macro benthos ; Diversity ; Abundance ; Survey ; Polychaets ; Oligochaets ; Mollusks ; Crustaceane ; Biomass
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 36
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 117
    facet.materialart.
    Unknown
    A survey on the effects of the Cochlodinium sp. bloom on the survival of the Litopenaeus vannamei shrimp (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25661 | 18721 | 2018-10-14 03:01:48 | 25661 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Red tide event a product of micro algae abundance has elevated in last few years. Loss of aquatic life due to HAB, and its effect on human health, has caused tremendous damage in the world. In this research the effect of (1, 2, 3, 9, and 30) ×10^3 Cells ml^-1 densities of Cochlodinium polykrikoides on survival and histopathological effect on hepatopancreas and gills of Litopenaeus vannamei postlarvae (PLs) and juvenile stages has been investigated. Results showed 100% survival with (1, 2, and 3) ×10^3 Cells ml-1 densities but accumulative mortality in 9×10^3 Cells ml^-1 density were 1.33% and 2.22%, in PLs and juvenile stages respectively, and there is no significant difference between control and treatment groups. accumulative mortality in 3×10^4 Cells ml^-1 density was 4.44% and 17.8% in PLs and juveniles respectively which have significant different with control groups. According to histopathological investigation in this density the infiltration of blood cells in connective tissue of hepatopancreatic tubules and gills lamellae of PLs and juvenile stages were low but high in 3×10^4 Cells ml^-1. The intensity of infiltration in juvenile stages was higher than PLs, which indicate incensement of hepatopancreatic and gills blood cells in higher densities of this phytoplankton. The end result of the study indicates that in high densities of C. polykrikoides survival rate in PLs and juveniles decreased and according to histopathological study the most important possible factor in shrimp mortality when exposure to C. polykrikoides was settlement of phytoplankton on gills lamellae and preventing oxygen exchange of shrimp.
    Keywords: Ecology ; Iran ; Cochlodinium polykrikoides ; Litopenaeus vannamei ; Bloom ; Histopathological ; Survival ; Investigation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 78
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 118
    facet.materialart.
    Unknown
    Epidemiological study on some environmental and management parameters affecting on WSD occurrence in Fenneropenaeus indicus and Penaeus vannamei (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25652 | 18721 | 2018-10-08 08:43:54 | 25652 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: For the first time white spot disease (WSD) was reported in shrimp farms of khoozestan province, in southwest of IRAN in 2002. Then in 2005 the neighbor province, boushehr, was contaminated. In 2008 WSD outbreak reported in sistan-bloochestan province in southeast of Iran. In 2015 all of southern shrimp farms of country except Hormozgan, the middle southern province, which has remained free of WSD, are being contaminated. White Spot disease suspended shrimp culture in thousands hectares of shrimp farms. Considering that white spot disease has not been observed in Hormozgan province yet, the question is; to what extent environmental and management factors participated in preventing WSD outbreak or cause WSD outbreak. In this study (20102012), the effects of environmental factors and management, stressors that decrease immune system function of shrimp are discussed. In addition, the role of pathogen as the main factor of outbreak is discussed. The goal of this study is to define environmental parameters and management practices associates with outbreak of white spot disease in affected provinces and discover reasons of being Hormozgan province free of this disease. In this study the role of the local environmental factors and management practice stressors in susceptibility to WSD was determine. Both the effects of environmental factors in water of ponds including total ammonia, nitrogen, dissolved oxygen, pH, salinity, transparency, and temperature and management issues related to biosecurity are studied. There were overlaps on physical and chemical parameter values obtained in clear areas with contaminated areas .Results of the data analysis suggest that lack of association with WSD incidence was 7 times greater than WSD incidence despite of disease outbreak in sistan-bloochestan province, so other sources of white spot disease virus incidence was suspected in affected areas. Histopathological examinations and polymerase chain reaction (PCR) tests during project performance did not reveal white spot disease virus evidences in post larvae examined from khoozestan province stocked in farms but disease outbreak was happened in that farms , so we suspected to management practice include feed , pond preparation and carrier of disease. Recorded values of temperature and salinity in some months during inspection in Hormozgan province specified stressful condition that may lead to WSD outbreak, however the disease did not appear. Therefore the hypothesis that the water physical and chemical conditions are reasons to prevent disease outbreak in Hormozgan province is being rejected. The policy of Hormozgan’s fishery authorities, to replaced Fenneropenaeus indicus with specific pathogen free Litopenaeus vannamei, that is more resistant to some of diseases, before incidence of WSD in farms and to before being endemic in the Hormozgan province, made an advantage compare to affected southern provinces that introduced Litopenaeus vannamei after WSD prevalence to their farms. However it does not guarantee to maintain current trend of being Hormozgan province farms free of white spot disease. Therefore establishing the principals of biosecurity are strongly emphasized. Strategies taken by the proficient authorities in preparation of SPF shrimp broodstock can be the most important factor in preventing WSD. Regarding biosecurity principals purchased feed must be free of shrimp head powder. Construction the new shrimp farms should be as far as it could be away from contaminated areas.
    Keywords: Aquaculture ; Ecology ; Health ; Iran ; Khouzestan Province ; Boushehr province ; Sistan and Balochestan province ; Hormozgan Province ; Epidemiological study ; WSD ; Fenneropenaeus indicus ; Penaeus vannamei ; Shrimp ; White Spot Disease ; Temperature ; Salinity ; PCR ; Polymerase Chain Reaction ; Ammonia ; Nitrogen ; Dissolved oxygen ; pH ; Transparency
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 468
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 119
    facet.materialart.
    Unknown
    Monitoring on nutrients of sediment with emphasis on algal bloom event in the southern of Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25657 | 18721 | 2018-10-08 08:23:30 | 25657 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was conducted to spatio-temporal fluctuation and distribution of phosphorous and nitrogen species, total organic carbone and some environmental parameters at suface sediments in the southern of Caspian Sea. In current study, 48 samples were collected from four stations (Bandar Anzali, Tonekabon, Bandar Nowshahr and Bandar Amirabad) and three dephths (5, 10 and 20 meter) during four seasons in 2013-2014. Results of this study showed that annual mean of Adsorbed-P, Fe-P, Al-P, Bioava.-P, Ca-P, TIP, Rese.-P and TP were obtained 6.68±0.63, 60.90±2.44, 24.94±2.39, 94.52±3.62, 1868±36, 1963±37, 87.51±9.52 and 2050±38 µg/g.dw, respectively. Result also showed that inorganic phophotous was maximum during different seasons, however, percent mean of residue-P which containe organic compounds and non-degrediable compounds, was less that 5 percent. Percent of Ca-P was higher than 90, whereas Bioava.-P was less that 10 percent. The order of different forms of phosphorous were registered Ca-P〉Org-P〉Fe-P〉Al-P〉Adsorbed-P.Annual mean of NH4/N, NO3/N, TIN, TON and TN were observed 2.56±0.27, 0.89±0.12, 3.52±0.26, 6.06±0.27 and 9.57±0.32µg/g.dw respectively. Annual percent of TON was two folds than TIN and NH4/N was also three times than NO3/N. In addition, mean of Fe, Al, Ca, Eh and TOC% were obtained 25.39±0.65, 18.76±0.68, 60.15±1.50 mg/g.dw and 67.02±0.68, 1.11±0.09, respectively. Maximum mean of carbon (1152±171), nitrogen (0.87±0.05) and phoporous (74±23) µM/g were observed in fall, winter and summer, recpectively. Also, maximum ratios of TOC:TP (16.8±2.3) and TOC:TN (2378±363) were obtained in fall season. As a conclusion, mian role of Adsorbed-P, Fe-P and Al-P adsorbed and desorbed were temperature, Eh and pH, respectively. Results of this study showed that TOC:TN was very high which represented to excitance of organic matter with almost non-degrediable. Whereas, TOC:TP was low which showed that organic phophoros was not related to proteins and phospholipids therefore sources of org-P were belong to other compounds.
    Keywords: Ecology ; Iran ; Caspian Sea ; Anzali ; Tonekabon ; Nowshahr ; Phophorous ; Carbon ; Nitrogen ; Environmental parameters ; Surface sediments ; Nutrients ; Algal bloom ; Species ; Samples ; Temperature ; pH ; Proteins ; Phospholipid
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 82
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 120
    facet.materialart.
    Unknown
    Echoenvironmental survey on fisheries site selection in the Guilan, Mazandaran and Golestan province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25670 | 18721 | 2018-10-08 08:56:10 | 25670 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The lack of sustainable management programs has resulted in the drastic decline of sturgeons stocks in the Caspian Sea in the past two decades. Legal catch quotas for all Caspian littoral states has dropped from 28500 tons in 1985 to 460 tons in 2007 while caviar production in the Caspian Sea during the same period decreased from 3000 tons to 70 tons. Caviar production in the I.R. of Iran dropped from 305 tons in 1985 to about 11 tons in 2007. The "Strategic and applied research planning for sturgeon management and conservation" was developed with the collaboration of academicians from universities, researchers, experts, fishery authorities and representatives of the executive government to maintain sustainable development and rational management of sturgeon stocks in the Caspian Sea. The preparation and development of this planning was carried out through 121 sessions (2100 person hours) A comprehensive report (375 pg) was prepared which was divided into five volumes; Volume I comprises an introduction, objectives, strategies and planning, present status of production and caviar harvest, catch and export quotas, revenue generated and release of sturgeon fingerlings, Volume II comprises analysis of the problem by constructing a problem tree with 8 broad categories to analyze 344 problems and an objective tree which is the hierarchic flowchart of objectives with 9 broad categories with 241 items, Volume III comprises a review and analysis of previous and ongoing research (414 projects) on different aspects of sturgeon during the past 40 years, Volume IV comprises prioritizing research objectives outlined by the objective tree and finally Volume V which prioritizes primary objectives for 14 executive and 10 research programs. On the basis of the evaluation of the present status and for the sustainable development and rational management of sturgeon stocks a strategic and applied research planning program was proposed and developed within the framework of three primary objectives; 1) Management and sustainable use of Caspian Sea resources (5 programs), 2) Rehabilitation and restoration of stocks (5 programs), 3) Development of aquaculture (4 programs). The applied research program for each proposed executive program was outlined in 10 programs, 42 comprehensive plans and 222 projects. The primary objective on management and sustainable use of Caspian Sea resources includes 5 programs, 14 comprehensive plans and 63 projects, while the primary objective on rehabilitation and restoration of stocks includes 4 programs, 16 comprehensive plans and 87 projects. The primary objective to address sturgeon aquaculture includes 1 program, 12 comprehensive plans and 72 projects. The impacts and outcome of each of these programs was determined and presented. It is evident that if the present situation persists, the catch figures for adult sturgeon specimens and caviar production in Iran will reach zero in 2021. But if concerted efforts are taken and the proposed strategic and applied research planning program is executed (commencing from 2009) we can put a halt to these declining trends. By producing sturgeon fingerlings to restore population abundances, by conserving and protecting them in the Caspian Sea and by conducting applied research we can produce 206.4 tons of caviar by the year 2033. Apart from harvesting caviar from the Caspian Sea we can also annually produce 3000 tons sturgeon meat and 60 tons farmed caviar starting from the year 2023. The total budget proposed for implementation of this program for a period of 14 years (2008-2022) is USD 2483 million. If this budget is allocated in time and the proposed strategic program is properly and totally implemented, we can not only save many sturgeon populations from extinction but also ensure job opportunities for 6000 fisherman, provide 1480 new job opportunities and annually produce 266 tons of caviar which will generate USD 4957 million.
    Keywords: Ecology ; Iran ; Caspian Sea ; Guilan Province ; Mazandaran Province ; Golestan Province ; Sturgeons ; Caviar ; Strategic ; Fingerlings ; Survey ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 164
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 121
    facet.materialart.
    Unknown
    The current economics of fisheries (fishery and aquaculture) in Guilan, Mazandaran and Golestan provinces (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25671 | 18721 | 2018-10-14 03:07:42 | 25671 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Regarding the natural potential and socio-economic advantages of aquaculture development, extension of aquaculture has been raised as one of the priorities of the second to fifth national programs of the Islamic Republic of Ira in the fisheries sector in the past ten years. Proliferation and aquaculture development also plays an important role in increasing employment, exportation, and rural development in rural areas. Although the physical capacities of aquaculture development may be clear, it is necessary to analyze the profitability of farmers and fish market as well. In recent years, reproduction and breeding of new species, in order to increase the income of farmers, have been put on the agenda of the Fisheries Research Institute. In order to increase the maximum utilization of production capacity and increase the warm water pond valume per unit area of land, three species of Indian carp has been imported. The main problems of aquaculture economical research include inadequate information and lack of the collaboration between different experts and aquaculture farmers. The objective of the research was to survey of economical aspects for culturing the imported Indian carp. The fingerlings of the imported species were transferred to the target centers, Southern aquaculture Research institute and Inland waters Aquaculture Research institute. The experiment was carried out as three treatments in triplicates for 9 months. To determine the cost of production and the share of the cost of production factors for farmed fish carp, including the cost of labor, cost of fingerlings, feed and fertilizer costs, maintenance costs, energy costs, depreciation of structures, equipment and buildings for administrative and other costs; past experiences, information and other resources and external experiences questionnaire was employed.
    Keywords: Management ; Iran ; Guilan Province ; Mazandaran Province ; Golestan Province ; Economic ; Indian carp ; Aquaculture ; Cost ; Farm ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 168
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 122
    facet.materialart.
    Unknown
    Study of hydrology of the Gorgan Bay (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25678 | 18721 | 2018-10-12 17:46:39 | 25678 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: At the end of 2011 Iranian Fisheries Research Organization- Inland Waters Aquatics Stocks Research Centre measured salinity, temperature and density of the Gorgan bay. I have used these data and produced the profile of them versus to the depth and estimate the depth of mixed layer versus to the distance from the beach and bottom. This work has been carried out almost at 5 selected lines which are indicated on map. These profiles show that as the distance increase from the beach the mixed layer depth decreases. We also know that the maximum mixed layer depth is in center of bay. The increase of temperature decreases the mixed layer and vice versa. Input flux of mechanical energy of the wind also increases. This depth provided the wind stronger enough. This can lead to increase of turbulence kinetic energy, which with subcritical values of Richardson number; can significantly increase mixing in upper layer (mixed layer) of the bay. How ever, the excessive evaporation increases the water flux into the bay. This can account for the increase of the mixed layer depth in time. The estimated mixed layer depth has a modulated distribution over the area studied. This show that, mixing processes in the upper layer may have different sources.
    Keywords: Ecology ; Iran ; Gorgan Bay ; Aquatic ; Salinity
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 74
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 123
    facet.materialart.
    Unknown
    Population structure study of Anzali wetland zooplankton (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25674 | 18721 | 2018-10-08 09:02:13 | 25674 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Anzali wetland is one of the most important places for spawning fishes and zooplankton groups are the first consumer in this ecosystem. They are the perfect food for the larvae of fishes. Zooplankton status was evaluated in 6 stations of different areas of the Anzali wetland during March 2011 to February 2012. Sampling was done by tube (PVC) and passing through of 30 micron planktonic net. The samples were identified and counted by invert microscope. According to the results were identified 60 Genus and 6 phylum (11, 31, 10, 2, 1, 1, 1, 2 genus of phylum Protozoa, Rotatoria, Arthropoda, Gastrotricha, Mollusca, Tardigrada, Nematoda, Porifera, Annelida) respectively. The results showed that the maximum annual average density of zooplankton was observed with 2497 number per liter in Karkan station and the population was more in the summer than in other seasons. Phylum of Rotatoria,, protozoa and superclass Copepoda formed 48, 45 and 6percent of the density respectively. According to the results the population of zooplankton did not change much compared to past studies, excluding Protozoa but the diversity of all zooplankton group are declined very much. According to the statistical analysis Kruskal Wallis are not significant differences between density of zooplankton in different stations, months and seasons (p 〉 0.05), but significant differences were found in different phylum together (p〈0.05).
    Keywords: Ecology ; Iran ; Anzali wetland ; Zooplankton ; Density ; Diversity
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 48
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 124
    facet.materialart.
    Unknown
    Population structure study of Anzali wetland phytoplankton (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25675 | 18721 | 2018-10-08 08:56:12 | 25675 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Phytoplankton groups are very important producers in the Anzali lagoon that have a significant role in the quality of water and the need to be constantly study their sequence and density. The survey was conducted in six workstations March 1389-Feb 2012. Samples were taken for a liter of water with plicae (P.V.C) and fixed with formalin to 4% ratio. Five ml of the sample after becoming homogeneous, was sequestration for 24 hours in the laboratory and identified and counted by invert microscope. Based on the results of this reviews 67 genus (22, 26, 9, 5, 1, 2, 1, and 1 genus respectively of the Bacillariophyta, Chlorophyta, Cyanophyta branches, Cryptophyta, Euglenophyta Chrysophyta, Pyrrophyta, the Xanthophyta) were identified. The results showed that the phytoplankton density was the most in Sorkhankol and Komeh Aghajani stations with annual average of 24387483±5643414 and 20381250 ± 5488084 per liter respectively. The Bacillariophyta ( particularly Cyclotella) was dominant in all of stations but high density of blue green algae (Cyanophyta) in Komeh aghajani station from July to mid-October have caused the annual average of these phylum is more than Bacillariophyta. In General, the average density of phytoplankton was the highest in summer than other seasons and was the lowest value in the fall. The number of the genus identified in this survey is less than previous studies. Compare this survey with the last studies reviews shows that diversity is reduced in the current situation in the Anzali than previous studies. According to the statistical analysis of the Kruskal Wallis, the density of phytoplankton had no significant differences in the different months, stations and seasons (p〉0.05) but the phytoplankton phylums have significant differences (p〈0.05) together.
    Keywords: Biology ; Ecology ; Iran ; Anzali wetland ; Diversity ; Phytoplankton ; Density
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 50
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 125
    facet.materialart.
    Unknown
    Study of process and quality assessment on hot smoked fish kilka production, determining its shelf life in vacuum and modified atmosphere and conventional packaging (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25686 | 18721 | 2018-10-14 03:06:42 | 25686 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In this study shelflife of whole hot smocked common kilka (Clupeonella cultriventris) fish packed in usual, vacuum and MAP packages and stored 6 weeks at refrigerator and or frozen temperatures was studied. Samples were analysed for TVBN, PV, pH, TBA, and total count, coliforms, clostridia, psychrophile, mold and sensory attributes weekly and monthly respectively. The ratio of Co2, N2 and O2 in the MAP package was 5: 55: 40%. Results indicated that the mixture gases could decline microbial growth and chemical changes during storage. Microbial and chemical changes in control samples were greater than that found for other samples. No significant microbial and chemical changes was observed in frozen samples during 6 weeks storage except for PV . Samples had the same sensory attributes just after production but were changed during storage significantly. Shelflife of samples packed in usual and MAP packages and stored at referigeratore was 21 and 35 days respectively; while it was 3 and 5 months for frozen samples packed in usual and vacuum packages. The conclusion is that packing hot smocked Kilka fish in vacuum and MAP packages can increase shelflife and decrease economical loss due to fish spoilage.
    Keywords: Fisheries ; Iran ; Common kilka ; Clupeonella cultriventris ; Hot smocking ; Shelflife ; Vacuum packing ; MAP ; Quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 100
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 126
    facet.materialart.
    Unknown
    Study on ecological capacity of the release sites of the fingerlings of sturgeon and bony fishes in order to regulate the restocking program at the Gorganrud River (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25677 | 18721 | 2018-10-12 17:45:07 | 25677 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This review is started from April 2002 in Gorgan River and continued for one year. Three sampling stations along the river to the mouth of the estuary were 4000 meters away from the bridge to the village Charqly all samples were collected in this area. Four million sturgeon larvae with average weight of 3/2 grams were obtained from martyr Marjani and Vushmgir Dam farms. Over 40 days released at release stations, and 316 million bony fish fingerlings are being release that 282 million were whitefish, 25 million carp and 9 million bream from Vushmgir Dam and Syjval Bream Center within two months at the release stations in Gorgan River. At sampling stations, especially estuaries to determine the shelf life of fry in the river and to determining migration into the river as well as physical - chemical and assess the frequency and biomass of feeding materials (phytoplankton, zooplankton, and benthos) at the sampling stations in Gorgan River were studied. The entire estuary to the sea makes itself. Maximum migration happened at sunset. Average Debbi for 20-year was at the rate of 14.95 cubic meters per second. In 2002, the annual average was 20.8 cubic meters per second, respectively. Evaluation of abundance and biomass of feeding materials (phytoplankton, zooplankton, and benthos) indicates the status of the average biomass of phytoplankton in the river at the release station was 23/75 mg per liter that was highest in September and was lowest in December. Mean primary production based on a 145 mg chlorophyll cubic meters. 6 orders of benthic invertebrates were observed. Benthic including 9 families and 11 genera have been identified including groups of insects, worms, low-tar and Polychaetes, crustaceans, bivalve and gastropod. But at the release station (S2) the highest levels of benthic biomass (18/18 grams per square meter) degree of diversity of benthic organisms (12) species have largely been seen as a maximum in April and minimum in December. Also zooplankton condition, zooplankton total of 27 genera belonging to five categories, Rotatoria, Kladvsra, Coupe Pvda, Balanvs, and protozoa were identified. In general, in September zooplankton has the greatest diversity and abundance and in September and March, the lowest number is observed.
    Keywords: Aquaculture ; Ecology ; Iran ; Gorganrud River ; Capacity ; Fingerlings ; Sturgeon ; Bony fish
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 110
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 127
    facet.materialart.
    Unknown
    An Investigation on the possibility of utilization of chemical material for mitigation of Cochlodinium sp. bloom and their impact on the Litopenaeus vannamei shrimp (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25682 | 18721 | 2018-10-08 09:02:16 | 25682 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Cochlodinium polykrikoides is a common red tide former associated with fish kills in the most coastal waters of the world. Pay attention red tide problems to human and environment, forecast and control of algal bloom are aim of a lot of coastal environmental studies. Following Cochlodinium polykrikoideswas bloom in Oman Sea and Persian Gulf, extensive mortality of aquatic animal were seen in 2008, instances verified extensive damaged to wetland habitats during algal bloom. In this study have been tried for finding a suitable chemical composition for Mitigation of Cochlodinium polykrikoides bloom in wetlands. To identify the safe chemical substance against red tide in coastal waters wetlands, concentration effects of 0.01 mg/l, 0.04 mg/l, 0.4 mg/l, 1 mg/l and 1 gr/l Magnesium Hydroxide, Poly Aluminum Chloride (PAC), Aluminum Sulfate, Sodium Hypochlorite, Calcium Carbonate, Ferrous Sulfate, Starch on Laboratory cultures of Cochlodinium polykrikoides (1000000 cell/lit) and Litopenaeus vannamei were studied in Iranian Shrimp research center. Cochlodinium polykrikoides were cultured under a cool white fluorescent light of 2000 lux intensity with a 12:12 h light: dark cycle. Temperature and salinity were controlled 28 °C and of 30 g/l (ppt), respectively. Finding show that, all concentration of above substance, completely disintegrated of cultured Cochlodinium polykrikoides. Also except 1 g/l Sodium Hypochlorite, in other concentrations of studied substances, there weren’t seen shrimp mortality after 96h. Among studied substance, starch have limit effects on the shrimp health and environment, therefore it can be suitable for controlling of Cochlodinium polykrikoides in shrimp ponds.
    Keywords: Ecology ; Iran ; Chemical control ; Red tide ; Cochlodinium polykrikoides ; Shrimp farms ; Litopenaeus vannamei
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 58
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 128
    facet.materialart.
    Unknown
    Study the added value and acceptance of fish patty produced by FPC of Abramis brama (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25680 | 18721 | 2018-10-14 03:10:31 | 25680 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Abrams brama distribution in the Caspian and most of it is in the Anzali lagon. Completed in the rivers to spawn or hibernate done, hibernation mass takes place in the well of the rivers, which feed the crustaceans, mollusks and aquatic insects are born. This fish is almost vertical and is able to search for food in the mud in shallow waters and residents due to competition for food with other species of plankton and plants inevitably feed. This fish has an economic value and good taste for meat consumption has become common. Fish patty prepared food that is easy to cook and good demand. The benefits of fish patty are the most of fresh fish, good use of raw materials, availability of several species of fish in the product, socio-economic benefits for fishermen and fishing industry, product nutritional value and high in protein rejection. Fish Protein Concentrate is a healthy food products, durable and of high nutritional value of fish and hygienic manner in which the protein and other nutrients found in fresh fish and more compact than the long-term maintenance and diverse the second is for the production of food products. The study aimed at producing FPC type A string of fish, fish cakes prepared by the FPC obtained and reviewed the nutritional value, acceptance and endurance cookies generated at room temperature for one month . After examination of the nutritional value, shelf-life tests using factors of corruption, TVB-N, pH, TBArs and sensory tests showed that the most important indicator of the value of food, especially protein product treatments with better FPC and the factors corruption is not much difference between 5% FPC and blank treatment. The final product is important in terms of nutritional value and shelf life, group 2 has a significant difference with other treatments and the final product can be made on the basis of treatment 2.
    Keywords: Fisheries ; Iran ; Fish protein concentration ; Added value ; Fish patty ; Shelf life ; Abramis brama ; FPC
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 68
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 129
    facet.materialart.
    Unknown
    The study of some trophic index in Anzali lagoon (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25823 | 18721 | 2018-10-13 10:36:37 | 25823 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Anzali wetland is one of the most important ecosystem in the southern Caspian Sea, acts as a special ecotone between different ecosystems; terrestrial, the Caspian Sea, brackish and fresh water environments. The hydro chemical and nutrients parameters were monthly studied in 10 locations of Anzali wetland for one year from May 2014. Trophic status index was calculated by different parameters including chlorophyll a, total phosphorus (TP), total nitrogen (TN) and transparency. Results showed that the annual average of total nitrogen, total phosphorus and dissolved oxygen were 1.023±0.523, 0.113± 0.105 and 8.71 ± 2.63 mgL^-1 respectively. While no significant difference was observed in total nitrogen (P〉0.05), total phosphorus showed a significant difference (P〈0.05) among locations. Chlorophyll a varied between 0.6 to 330 (average 47.4 ± 65.0) µgL^-1. EC varied between 254 and 14250 µm and had a significant difference among locations (p〈0.05). The TN/TP was lower than 10 in Anzali wetland (except in western area) that show the limitation role of TP in eutrophication process. According to results while the western area and SiahKeshim are observed in eutrophic and super eutrophic status, the rest of regions are classified as hyper eutrophic status. Decrease of nutrient components from inlet rivers and to remove the aquatic plants in Anzali water bodies are recommended to control of eutrophication process in Anzali wetland.
    Keywords: Ecology ; Iran ; Caspian Sea ; Anzali wetland ; Chemical parameter ; Trophic status index ; Ecosystems ; Chlorophyll a ; Phosphorus
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 40
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 130
    facet.materialart.
    Unknown
    The study of some limnological study of the Kan river in the catchment area of the Persian Gulf Martyrs Lake (Chitgar), Tehran trophic index in Anzali lagoon (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25824 | 18721 | 2018-10-13 10:14:39 | 25824 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study focused on identification phytoplankton, zooplankton, benthos, fishes and relationship between biotic and abiotic parameters at three stations in the Kan river during 2014. This study identified 19 phytoplankton taxa. The findings showed, the diatoms abundance were dominated in the river. The chlorophytes abundance were recorded the lowest abundance in this study. The nutrients and water temperature were the significant abiotic parameters to increase cyanophytes and chlorophytes abundance in the Kan river. This study identified 26 zooplankton taxa. The Rotatoria and Protozoa abundance were dominated in the Kan river. Based on CCA, there was no correlation between abundance zooplankton and abiotic parameters. The biodiversity index of plankton was between 1.8 and 2 and the lake situation is located in the mesotrophic category. The study of the Kan river fishes showed, only one endemic fish species Capoeta bohsei. The length (between 38 and 270 mm, average 144±86 mm) and weight (between 1.1 and 356 g, average 108.8±146.7 g) of the C. bohsei were varied during the study period. The 19 benthos taxa were identified. The Ephemeroptera was most abundant in the benthos groups. The classification of river based on biology indicator and environmental parameters confimed that water quality is located in the moderate category.
    Keywords: Ecology ; Iran ; Tehran province ; Kan River ; Chitgar Lake ; Phytoplankton ; Zooplankton ; Benthose ; Fish ; Water quality ; Martyrs Lake
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 72
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 131
    facet.materialart.
    Unknown
    Gobiodon citrinus  (Rüppell, 1838) (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21080 | 17408 | 2017-04-27 06:14:31 | 21080 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Gobiodon citrinus, the Poison Goby, is a species of goby native to the Indo-West Pacific: Red Sea south to Delagoa Bay, Mozambique and east to Samoa, north to southern Japan, south to the Great Barrier Reef, we report for the first time from Persian Gulf (Kish Island, Iran). Maximum length is 6 cm in Persian Gulf. They are reef dwellers being found at depths of from 2 to 8 meters (in Kish Island, Iran) and in association with Acropora corals. The mucus produced by this fish is toxic. Juveniles have bright yellowish tones (with some darker variations according to geographic origin of the population in question). With the age their color darkens. In aquarium, sometimes they show a pale color, due to any lack of carotenoids in the diet, which does not provide the yellow pigment. The species show no appreciable sexual dimorphism with a naked eye. In nature, found in pairs or small groups.
    Keywords: Biology ; Fisheries ; Gobiodon citrinus
    Repository Name: AquaDocs
    Type: other
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 132
    facet.materialart.
    Unknown
    Pseudochromis olivaceus  (Rüppell, 1835), Olive Dottyback (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21078 | 17408 | 2017-04-27 06:11:38 | 21078 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Pseudochromis olivaceus (Olive Dottyback) was always found in association with coral overhangs or large rubble pieces on hard bottom substrates, and would retreat under the rubble or overhang when approached. P. olivaceus is species of Pseudochromis native to Gulf of Aqaba, Indian Ocean: Red Sea, we report for the first time from Persian Gulf (Kish Island, Iran). Relatively large specimens of P. olivaceus that inhabit these corals were observed preying on settlers of Dascyllus spp. Maximum length is 8 cm in Persian Gulf. They are reef dwellers being found at depths of from 4 to 8 m and in association with Acropora corals.
    Keywords: Biology ; Fisheries ; Pseudochromis olivaceus
    Repository Name: AquaDocs
    Type: other
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 133
    facet.materialart.
    Unknown
    Scorpaenopsis barbata  (Rüppell, 1838) (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21091 | 17408 | 2017-04-27 06:25:57 | 21091 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Scorpaenopsis barbata, lives along sandy beaches, rocky coastlines and coral reefs and in shallow waters. Its name refers to the fleshy outgrowth of skin protruding from its chin. They have a wide mouth and broad spiny head and venom glands that may occur at the base of fin spines which can produce deep and painful wounds. The feathery fins which cover the scorpion fish body help in the camouflaging of the animals into the surrounding coral. Also, the coral- like frilly, fleshy flaps of skin protruding from its chin add to the species camouflage ability and help the fish to blend with its surroundings. They rest during the daylight in crevices in the corals and from their position they suddenly leap at their un-suspecting prey which could be small fish and crustaceans. Maximum length female is 25 cm and male 17 cm in Persian Gulf. Eggs hatch in about 2 days into tiny fry that remain near the water surface until they grow bigger and they reach nearly about 5 cm in length, they swim down into the ocean to join the reef community.
    Keywords: Biology ; Fisheries ; Scorpaenopsis barbata
    Repository Name: AquaDocs
    Type: other
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 134
    facet.materialart.
    Unknown
    Gymnothorax undulatus (Lacepède, 1803) (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21094 | 17408 | 2017-04-27 06:29:04 | 21094 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: The Gymnothorax undulatus (undulated moray) is a distinctive moray eel, taking its name from the pattern of light undulating lines that form a faint net-pattern along its long, sinuous body. Like other moray eels, the undulated moray does not have scales, and so to protect itself from parasites and scrapes, it secretes a protective layer of mucus over the thick, muscular body. The G. undulatus is a nocturnal species that uses its keen sense of smell to actively and aggressively hunt for fish, octopus and crustaceans, consuming almost anything that will fit in its mouth. When prey is captured, it uses a specialized second set of jaws within the throat to grasp onto the prey and drag it back into the throat. Commonly found on reef flats and in lagoons, the undulated moray hides among rocks, rubble or debris down to depths of 30 meters. Female spawns large numbers of heavily-yolked eggs, which are fertilized externally by the male. Small, ribbon-shaped larvae subsequently emerge from the eggs to drift passively in ocean currents as part of the zooplankton community, before growing large enough to establish a territory on a reef. Maximum length is 100 cm in Persian Gulf (Iran, Kish Island).
    Keywords: Biology ; Ecology ; Fisheries ; Gymnothorax undulatus
    Repository Name: AquaDocs
    Type: other
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 135
    facet.materialart.
    Unknown
    Holothuria hilla (Lesson, 1830) (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21093 | 17408 | 2017-04-27 06:27:14 | 21093 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Holothuria hilla is belong to soft-bodied holothuroid, a nocturnal species and is found on inner reef flats, usually in seagrass beds or coral rubble, to depths of 3-20 m. During the day H. hilla can be found under coral rubble, emerging at night to feed. Detritivorous deposit feeder.. During the day it was found under coral rubble, emerging at night to feed. Members of the class Holothuroidea are gonochoric and have only one gonad. H. hilla has asexual and sexual reproduction. This species is usually rare, it is likely that the species has proliferated on rarely site by asexual reproduction from a few specimens. Fission occurs year round, it appears to be more prevalent in cooler months. The sex of the specimen could not be determined in the indeterminate specimens. Spawning and fertilization are both external and some exhibit brooding. Embryos develop into planktotrophic larvae (auricularia) then into doliolaria (barrel-shaped stage) which later metamorphose into juvenile sea cucumbers. The biggest size observed 1.5 meter in Persian Gulf (Kish Island).
    Keywords: Biology ; Ecology ; Fisheries ; Holothuria hilla
    Repository Name: AquaDocs
    Type: other
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 136
    facet.materialart.
    Unknown
    Scorpaenopsis barbata (Rüppell, 1838) (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21103 | 17408 | 2017-04-27 06:33:55 | 21103 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Scorpaenopsis barbata, lives along sandy beaches, rocky coastlines and coral reefs and in shallow waters. Its name refers to the fleshy outgrowth of skin protruding from its chin. They have a wide mouth and broad spiny head and venom glands that may occur at the base of fin spines which can produce deep and painful wounds. The feathery fins which cover the scorpion fish body help in the camouflaging of the animals into the surrounding coral. Also, the coral- like frilly, fleshy flaps of skin protruding from its chin add to the species camouflage ability and help the fish to blend with its surroundings. They rest during the daylight in crevices in the corals and from their position they suddenly leap at their un-suspecting prey which could be small fish and crustaceans. Maximum length female is 25 cm and male 17 cm in Persian Gulf. Eggs hatch in about 2 days into tiny fry that remain near the water surface until they grow bigger and they reach nearly about 5 cm in length, they swim down into the ocean to join the reef community.
    Keywords: Biology ; Fisheries ; Scorpaenopsis barbata
    Repository Name: AquaDocs
    Type: other
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 137
    facet.materialart.
    Unknown
    Sepia pharaonis (Ehrenberg, 1831) (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21096 | 17408 | 2017-04-27 06:24:33 | 21096 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: The Sepia pharaonis (pharaoh cuttlefish) is a large cuttlefish species, growing to 80 cm in mantle length. Males are larger than females, the maximum recorded size for males is 80 cm and 5 kg, and for females 50 cm and 2 kg in weight (Iran, Persian Gulf, Kish Island). This cuttlefish lives in warm water (30°C) and is fast growing. They mate and spawn at 110 days and their life span is 240 days. They lay about 1500 eggs which take 14 days to develop at 28°C. Inhabiting the neritic zone, it is often found in depths up to 130 m. S. pharaonis prefer a medium to high amount of sunlight for den location during the day. Additionally, they prefer mud substrata during the day, but during the night prefer sand or mud substrata equally. Pharaoh cuttlefish often show a solid color when resting on a solid color background, alternating from a pale white to all dark brown. Additionally, they can show a mottled white and brown color, with a center circle of brown. The mechanism for color is the same in the Pharaoh cuttlefish as it is in other cuttlefish. This color-changing function is produced by groups of red, yellow, brown, and black pigmented chromophores above a layer of reflective blue and green tinted iridophores and leucophores, with up to 200 of these specialized pigment cells per square millimeter. These sacs of color are controlled by rings of muscle around the sac. The cuttlefish expands and contracts these muscle rings in order to show different colors.
    Keywords: Biology ; Ecology ; Fisheries ; Sepia pharaonis
    Repository Name: AquaDocs
    Type: other
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 138
    facet.materialart.
    Unknown
    Platax teira (Forsskål, 1775) (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/21090 | 17408 | 2017-04-27 06:13:06 | 21090 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Platax teira, also known as the teira batfish, longfin batfish, longfin spadefish is known to associate with floating seaweed, debris and artificial reefs. We report for the first time from Persian Gulf (Kish Island, Iran). Maximum length is 40-50 cm in Persian Gulf. Juveniles and adults occur inshore on protected reefs and in mangrove areas and also on wrecks and deep reefs to 20 m; they may be solitary, in pairs, or in large schools. Small juveniles with floating debris and form aggregations as they find each other. They can be pelagic to large sizes and form schools under large Sargassum rafts that usually form after the wet season. Like most spadefishes, this species is unafraid of divers. Flesh excellent, or rank, with a weedy flavor. The long-finned juveniles are valuable in the aquarium fish trade.
    Keywords: Biology ; Fisheries ; Platax teira
    Repository Name: AquaDocs
    Type: other
    Format: image/jpeg
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 139
    facet.materialart.
    Unknown
    Limnological survey on the most important rivers in the Iranian southern soasts of the Caspian Sea in the Guilan Province with emphasize on the pollutants (Hevigh, Karkanrud and Shafarud rivers) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25078 | 18721 | 2018-08-19 16:08:10 | 25078 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In order to create a reliable ecological database for Guilans running waters(north Iran near the Caspian sea), at the first step 3 important rivers containing Hevigh, Karkanrud and Shafarud, were selected and limnological survey, during autumn 1380 and summer1381 were seasonally carried out for them. Results showed that the key physico-chemical parameters such as dissolved O2, BOD5, pH, Phosphate, Nitrate, Nitrite, ammonium and in all of the three rivers water were in their normal range suggesting good water quality. Chrysophyta, Chlorophyta, Cyanophyta and Euglenophyta were respectively the most prevalent phytoplankton taxa and Zooplankton fauna of the rivers were fixed and sessile species belong to Protozoa and Rotatoria. 42 benthic macroinvertebrates taxa(Hevigh:36,Karkanrud:22 and Shafarud:30) were identified in these 3 rivers which individuals belong to order Diptera compromise the most divers and frequent one. Regarding macroinvertebrates diversity and indicator groups, it seems that Hevigh river has relatively better water quality than the two other. 23 fish species belong to 9 family,7 order and 2 class , were identified in these rivers during the study period which cyprinid were the most diverse and prevalent of them. Albornoides sp., Capoeta capoeta and Neogobios sp. were the most widespread and frequent species of the identified fishes in all of them. Bacteriological survey including Coliform and E.Colie count showed that the lower parts of the rivers near the estuaries were more infected and the bottom sediments had more bacterial count during the all sampling period. However the total coliform count never exceed of 200 colonies per 100cc , suggesting no risk for direct contact (swimming and washing), according to EPA standards. Chromium, Cadmium and Mercury had very low concentrations in the rivers water but Cupper had relatively high concentration (up to 1.788 mg/l in Hevigh river) amongst the studied heavy metals. The maximum and minimum concentrations of detergent materials or surfactant (LAS) were respectively observed in Shafarud (0.047 mg/l) and Hevigh (0.014 mg/l). According to the results of the study even though all the three rivers water had an overall reasonable quality, but some signs of destructions and degradations such as sedimentation, relatively increase of nutrient, increased concentrations of some pollutants, which all results in the low diversity of macroinvertebrates and prevents migration of anadromous fishes, calls for a continuing monitoring program and precise control for these regions.
    Keywords: Ecology ; Limnology ; Pollution ; Iran ; Caspian Sea ; S Caspian Sea ; Guilan province ; Karkanrud ; Shafarud ; Chrysophyta ; Water quality ; Phosphate ; Physico-chemical parameters ; Limnological ; Survey
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 158
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 140
    facet.materialart.
    Unknown
    Artemia population changes on Orumieh Lake (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25087 | 18721 | 2018-08-23 05:33:10 | 25087 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Estimation of Artemia resources on Uromieh Lake during (years2002-2003) showed huge reduction of Artemia cysts and biomass stocks than the previous years. Reduction of average annual precipitation in west Azerbaijan province during last 6 years than previous years from 32centimeter to 21centimeter has reduced the annual entered waters from the lakes basin rivers into the lake from(3.5-4.0)billion cubic meters to(1.8)billion cubic meters. During this period the entered fresh water in to the lake has been reduced, however the evaporation rate from 5750 square kilometer of Lake Surface has been continued at 3to4billion cubic meters per year. In spite of the fact that there are more than 5 billion tons salts on Uromieh Lake and that about 2 billion cubic meters of lake water is decreased annually due to negative balance between entered water and evaporation rate from Lake Surface, the water salinity on the lake has increased From 220 g/l in 1999 up to high saturated level atthe present. Increasing salinity on lake water up to high saturated level has caused to salt precipitate on lakes bottom and the Ionic exchange between lake water and beds natural precipitates that necessary to provide needed ions to photosynthesis was interrupted, so that the quality and quantity of primary productions on the lake has decreased and the lake has change to oligotrophic condition and in some seasons the turbidity of the lake has increased up to 5 meters. Above mentioned integrated factors have reduced Artemia stocks on lake during a few last years and this has resulted in stopping the cysts and biomass harvesting.
    Keywords: Fisheries ; Iran ; West Azerbaijan province ; Orumieh Lake ; Artemia ; Population ; Biomass ; Cyst ; Salinity ; Photosynthesis
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 59
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 141
    facet.materialart.
    Unknown
    Monitoring of tuna resources (yellowfin and skipjsck tunas) in Oman Sea along Sistan & Balouchestan coastal waters (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25092 | 18721 | 2018-08-23 05:55:59 | 25092 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Collecting of biometric parameters and catch and effort data were made for yellowfin and skipjack tunas from artisanal gillnet and industrial purse seine fisheries during the years 2002-2004 in Oman Sea along Sistan and Balouchestan coastal waters. The previous available data was used for the purpose of better monitoring the resources. The frequency of maturity stages and GSI values obtained from yellowfin showed a spawning period from February to May, peaking in April-May. For skipjack, the data indicated a long spawning period which beganed in December with peaking in April-May. LM50% was obtained as 83.1 and 62.4 for yellowfin and skipjack tunas respectively. Sex ratio by size group showed a predominance of males with larger fish. Analysis of stomach contents showed a significant proportion for the both species. The composion of food contents by occurrence method revealed that fish were the most dominant food items by year for the specise. Presence of squilla, crabs, shrimps (Larval stage), belonging to Peneaidea family, in large quantities were the oblivious food items so that they had not been reported by previous studies. Blooming of squilla, Natosquilla investigators, in the western Indian Ocean provided a situation to be observed in large occurrence in yellowfin and skipjack stomach contents. The ratio was more in yellowfin stomachs when compared to skipjack ones which accounted for 38%, 19% and 35% of the total stomachs studied by the study year. The shrimps prey were only observed in skipjack gut contents (with exception of one case in yellowfin stomach) which were the second major component in 2002 and 2003(24% and 17% respectively). Comparsion of mean length showed a sharp decrease from 1992 to 2004 for the species. Regarding yellowfin the mean length from 93.2 cm FL in 1992 reached to 83.2 cm FL in 2004 and from 64.95 to 58.51 cm FL for skipjack. In spite of decreasing mean length for yellowfin, the value increased in 2004 in comparison to 2003 which was in agreement with Indian Ocean data. Comparative analysis of length frequency with LM50% indicated that immature fish were the major part of the catch. There are available information on population dynamic parameters. A comparative analysis of CPUE,s (kg/panel.day) from artisanal gillnet fishery for yellowfin and skipjack tunas revealed a decreased value by fishing craft class in 2005 when compared to 1998 data, but increased in 2003. Increased trend of the species catches by fishing craft class was due to increased fishing effort. Analysis of the statistical catch and effort data for the study years, irrespective of fishing craft class, showed that total landings of the species have increased 4.4 fold in spite of attaining CPUE to 7% in decrease which was a consequence of increased fishing effort up to 4.7 fold. The CPUE, s (tons / positive set) from industrial purse seine fishery increased in 2003 and 2004(39% and 10% respectively), but declined up to 54% in 2005. The trend is in agreement with purse seine fishery data from Indian Ocean where the increased values were attributed by larger size of yellowfin. The purse-seine fishing ground data revealed that the major sets were made in Persian Gulf, whereas a shift towards Oman Sea in eastern part of Sistan and Balouchestan coastal waters is recommended to be a suitable fishing area for the first half of year and towards offshore waters in Indian Ocean for the second half of year. For attaining a sustainable fishery system, it is recommended to regulate the gillnet mesh size and introduce longline fishery in the area along with stopping any further increased fishing effort in artisanal gillnet fishery.
    Keywords: Fisheries ; Iran ; Oman Sea ; Sistan & Balouchestan ; Monitoring ; Tuna ; Yellowfin tuna ; Skipjsck tuna ; Coastal waters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 132
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 142
    facet.materialart.
    Unknown
    Survey on physicochemical parameters and pollutants in artificial reefs in Hormozgan province (Bandar-e- Lengeh area) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25265 | 18721 | 2018-09-07 07:24:14 | 25265 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Survey on physicochemical parameters and pollutants in artificial reefs in Hormozgan province (Bandar-e-Lengeh area) was conducted during 2004-2007. After establishing of artificial reefs by Hormozgan Shilat office, selection of sampling stations is performed at summer and winter seasons. Summer and winter values for temperature were 32.9 0.5 and 21.4 0.5 centigrade. pH had a little range of tolerance (8-8.95) and its annual mean was 8.81 0.13 . Transparency is an effective parameter on monitoring of artificial reefs. Summer and winter values for Transparency were 3.8 3.72 and 5.63 0.78 meters. Annual mean of dissolved oxygen and salinity were 7.11 0.1 ppm and 39.13 0.26 ppt. Annual means of dissolved nitrate, nitrite and orthophosphate were 4.9 0.7, 1.44 0.09 and 0.97 0.06 micromole per liters respectively. Measurement of chl.a was done in summer only. The maximum concentration was 2.95 microgram per liter. Annual average percentage of silt, clay and sand were 33 10.68, 21.63 4.84 & 45.96 12.66 respectively. Organic Carbon percentage had a little rang (0.61 1.92) of changes. Its annual percentage was 0.99 0.2. Summer and winter values for COD were 1.53 0.48 & 1.62 0.48 milligrams per liter. Concentration of heavy metals (Cu, Zn, Fe, Ni & Pb) in sediments were determined .All of heavy metals (especially Pb) had higher concentration in summer than winter. The annual means of Cu, Zn, Fe, and Ni & Pb were 26.5, 54.3, 27.6, 70.85 & 48.15 micrograms per gram of dried sediment. Normal aliphatic hydrocarbons (C10-C 30) were determined in water & sediment. Annual average and the summer and winter values for normal aliphatic hydrocarbons in water were 258.7, 217.8 & 299.6 micrograms per liter and for sediment were 5726.8, 12616.8 & 2132.2 micrograms per gram of dried sediment.
    Keywords: Ecology ; Pollution ; Iran ; Persian Gulf ; Hormozgan Province ; Bandar-e-Lengeh ; Artificial reef ; Heavy metals ; Aliphatic normal hydrocarbons ; Physicochemical parameters ; Survey ; Pollutants ; Sampling ; Temperature ; pH ; Transparency ; Nitrate ; Nitrite ; Sediments
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 59
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 143
    facet.materialart.
    Unknown
    The study of fluctuation of large pelagic stock (yellowfin tuna, skipjack tuna, longtail tuna, Narrow-barred Spanish mackerel) in order to optimum exploitation in the Persian Gulf & Oman sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25292 | 18721 | 2018-09-08 16:28:54 | 25292 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The study of fluctuation of large pelagic stock (yellowfin tuna, skipjack tuna, longtail tuna, Narrow-barred Spanish mackerel ) in order to optimum exploitation in the Persian Gulf & Oman sea This study was carried out from 2005-07 in order to acquire some biological characteristics and population dynamic parameters for stock management and responsible fisheries. Thunnus albacares (yellowfin tuna), katsuwonus pelamis (skipjack tuna), Thunnus tonggol (longtail tuna) and scomberomorus commerson (Narrow- barred Spanish mackerel) were sampled. In total, length frequency of 9345 specimens of yellowfin tuna were analyzed. Size range was 37-172 cm. Teleost fishes were the most dominant prey species observed in this study (42%), Occurrence of Potunus Pelagicus was found to be the second (28%).Sthenoteuthis oualaniensis (22%), Natosquilla (5%) and octopus (3%) also were identified in the gut content of the yellowfin tuna. Length of maturity (50%) of yellow fin tuna was estimated 77.2 cm and spawning season was started from May. 8443 specimens of skipjack with size range of 32-90 cm were sampled. 48% of food items were teleost fishes. Squid and shrimp were also identified. Spawning season was begun from June. Growth parameters & fishing mortalities of yellow fin tuna and skipjack tuna were also estimated. Size range if longtail tuna was from 26-125cm Length infinity was estimated 132.3 cm with growth parameter of 0.35 per year. In total 10451 specimens of narrow- barred Spanish mackerel were sampled. Size range was from 20-164 cm. Teleost fishes were the most dominant prey species observed in the study (91.3%). Crustaceans (0.6%) and Indian squid (0.2%) also were identified in the specimens. Length maturity (50%) was estimated 83.6cm.
    Keywords: Fisheries ; Iran ; Persian Gulf ; Oman Sea ; Fluctuation ; Pelagic ; Yellowfin Tuna ; Skipjack tuna ; Longtail tuna ; Narrow-barred Spanish mackerel ; Population ; Fisheries ; Sthenoteuthis oualaniensis ; Natosquilla ; Octopus ; Maturity ; Indian squid ; Specimens
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 102
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 144
    facet.materialart.
    Unknown
    Stock assessment of sturgeon fishes in the southern part of Caspian Sea (Iranian water) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25298 | 18721 | 2018-09-07 08:30:09 | 25298 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The marine survey for sturgeon stock assessment was conducted in summer, winter and spring in the years 2006 and 2009 to estimate the relative and absolute abundance and percentage composition of each species in the Guilan, Mazandaran and Golestan Provinces. This survey was carried out in the Iranian waters of the Caspian Sea on board the Sisara2 and Guilan vessels using trawl nets at 2-100 m depths. Trawling was carried out in 85 stations that were selected using a stratified random design. The number of stations in each scope was based on the area of the scope in terms of the total area. Trawling and sampling in shallow water up to 10 m were carried out using 9 m trawl nets whereas 24.7 m trawl nets were used for depths more than 10 m. Trawl surveys were carried out in the daytime. Trawling velocity was kept at 2.5-3 kts and trawls lasted half an hour in order to calculate abundance, and biomass of sturgeons using the swept area method. Catch per unit area (CPUA) in the winter 2006 survey was 3853 specimens nm^2 , in the summer and winter 2007 survey was 1854 , 2912 specimens nm^2 at depths less than 10 m respectively . CPUA for sturgeons in spring 2008 survey was 2103 specimens nm2 at depths less than 10 m and 393 specimens nm2 at depths greater than 10 m (10-100 m depth). These values in the winter 2008 survey dropped to 44 specimens nm^2 at depths at depths above 10 m. CPUA for sturgeons in the spring 2009 survey was 300 specimens nm^2 at depths less than 10 m and 307 specimens nm^2 at depths greater than 10 m. In all the surveys conducted CPUA for A. persicus was higher than that for the other sturgeon species. Based on the calculations carried out in the marine survey in winter 2006 the estimated absolute abundance for sturgeons was about 2977.363 thousand. The total biomass of sturgeon was estimated as 131.713 tons. In the summer 2007 survey total abundance was estimated 1432.398 thousand, and total biomass of sturgeons was estimated at about 312.161 tons. In the winter 2007 survey total abundance for sturgeons was estimated at about 2250.105 thousand, and total biomass was estimated 578.08 tons. In the spring 2008 survey total abundance was estimated at about 3002.832 thousand. The total biomass was estimated at about 2533.318 tons .In the winter 2008 survey total abundance was estimated at about 152.722 thousand, and total biomass in winter 2008 was estimated 170.540 tons. Total abundance in spring 2009 survey was 1310.232 thousand and total biomass was estimated at 2019.tons. Investigation of stomach content of sturgeon Acipenser persicus caught under 10m depth in 2006 to 2007 surveys showed that there is significant difference in the consumed food. Polychaeta is the major food consumed and crustacean an the minor one(P〉0.05).Also no new types of food( such as bony fishes or benthic) have been observed in food chain of Acipenser persicus only the food consumption rate has been related to the season of year and increases or decreases in warm or cold seasons, respectively For physiological study and determination of sexual maturation stages in sturgeon,119 gonad sampling prepared. The results showed that 63 % of fishes were females and 37 % of them were males. Gill microscopic study shows complications such as hyperplasia, curvature, adhesion, embowed, shorting and lengthen of secondary filaments and fraught bloody. Microscopic study on liver indicates signs of cloudy inflammation, fatty degeneration, dispersion of billed secretions and cell atrophy. The population genetic structure of Persian sturgeon (Acipenser persicus) in Sefidrood and Gorganrood rivers watershed analyzed based on microsatellite markers during sturgeons assessment in 2006-2008. Results showed that Acipenser persicus in two region of south part of Caspian Sea are two independent populations.
    Keywords: Fisheries ; Iran ; Caspian Sea ; Mazandaran Province ; Golestan Province ; Guilan Province ; Sefidrood River ; Gorganrood River ; Stock assessment ; Sturgeon ; Acipenser persicus ; Diet ; Gills ; Sex ; Microsatellite ; Population ; Genetic ; Survey ; Species ; Sampling ; Trawling ; CPUA ; A. persicus ; Biomass ; Polychaeta ; Maturation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 154
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 145
    facet.materialart.
    Unknown
    Identification and distribution of mullets in the coastal water (intertidal zone) of Bushehr Province northern Persian Gulf (2008-2009) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25306 | 18721 | 2018-09-08 16:34:59 | 25306 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The distribution and stock assessment of edible bivalves were carried out in Bushehr shoreline areas (from 50֯ 38 - 29֯ 27 to 52֯ 41 - 27֯ 17 ) throughout the period of September 2008 - 2009. The objectives of this study were identifying the location of edible bivalves, biomass estimation, to estimate the growth parameters and natural mortality. Samples were obtained at roughly monthly or bimonthly from 7 areas and some of the at low tide during the year from 4 areas. Transects were selected at random direction and at the zigzag pattern in every area, so that is cover all of the shell beds. In each transects one or two sampling quadrat (0.25 m^2) were placed randomly. Depending on the area size the number of the quadrat were different. After the removal of the stones and debries, the edible bivalves (empty and live bivalves) and some of the decoration shells were identified and numbered. Some of the samples were transferred to a bag and taken back to the lab for further identification and further analysis. In this study, the percentage of samples was used to show the distribution of the species in different areas. Faunal affinity between stations was calculated by Sorensen formula. For the purpose of the stock abundance, the mean number of the shells in each quadrat was regarded as an estimate of stock mean. The total stock in the investigated areas was obtained by multiplying the mean by the ratio of the stock area to the quadrat area (0.25 m^2). Confident limits 0.95 % or 95 probility was given for precise the estimates. The length of some of the bivalves was measured from dextral to sinistral with vernier calipers to the nearest 0.1 millimeter. In some of the species the length frequency was used to estimate growth and natural mortality parameters. A subset of samples of Solen brevis was taken to the laboratory for the precise measurements, and relationship between body weights and total length. Surface sediment samples (5-20 cm) inhabited by some clam species were sampled in some areas. Water temperature and salinity were recorded during the survey in the sampled areas. A total of 45 species or species group was identified in the study area. The main area distributions for live edible bivalve, Solen brevis were located at Bupatil, Kaloo, Piazi and Bordekhoon. Other bivalve, Paphia cor was distributed in the Gassir, but empty bivalve shell was seen in the Bordekhoon shoreline. A limited tidal coastal area of Ganaveh has been covered by a pearl oyster species, Pinctada radiate that attached in the rocky beds. The empty shells of this species and other genus of the family were distributed in the other areas such as Golestan and Nayband. The most important areas for the decoration shells were located in the Golestan and Nayband. The empty bivalve shells, Trachycardium lacunosum were distributed in Lavar shoreline. The other species or species group were distributed in the shoreline of the study areas in different months with the low abundance. The growth parameters of two alive species, Paphia cor and Solen brevis were estimated. The Von Bertalanffy growth parameters for Paphia cor were estimated as K = 0.8 Year^-1, L_∞= 55 mm and t0 =-0.45 and for Solen brevis K=0.7 Year^-1, L=120 mm and t0 = -0.35. . Estimated natural mortality rate for Paphia cor was M=0.57 and for Solen brevis M=0.26. The maximum ages (Tmax) calculated were 50 months for Paphia cor and 54 months for Solen brevis. The mean biomass of Solen brevis in Bupatil was 3.25 1.1 shells per quadrat with a maximum peak 4.6 shells per quadrat in October (Mehr) and minimum 1.5 shells per quadrat in Augest (Mordad). For the pearl oyster, Pinctada radiata in the Ganaveh this estimation was obtained in maximum peak in July (Tir) 60.5 shells per 100 m^2 and minimum in March (Esfand) 3 per 100 m^2. Mean biomass for this species was estimated 27.7±24.2 shells per 100 m^2. The mean biomass of P. cor was 8.8 2.2 shells per quadrat and with a maximum in February (Bahman) and minimum in November (Abban).
    Keywords: Biology ; Ecology ; Iran ; Persian Gulf ; Bushehr province ; Ganaveh ; Identification ; Distribution ; Mullets ; Stock assessment ; Biomass ; Growth ; Mortality ; Samples ; Species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 80
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 146
    facet.materialart.
    Unknown
    Monitoring of use possibility of edible films (whey protein, sodium alginate and mix of them) for cleaned kilka packaging (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25305 | 18721 | 2018-09-07 08:31:01 | 25305 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This project was carried out in order to increasing of nutritional value, taste and shelf life of cleaned Kilka Fish during cooled storage. Edible films made by Whey protein and Sodium alginate were used for fish packaging. This search carried out in two stages consisting of pre- study and study. 3, 6, 9 and 12% concentrations of Wp and 0.5, 1, 1.5 and 2% concentrations of SA at three times including 0, 2 and 4 hours were used in pre-study stage. The covered samples were kept in -18 ֯C. Microbial and sensory examination were carried out for a period of two months. Microbial factors were including total bacterial count, Staphylococcus bacteria count, Coliform, Escherichia coli and Pseudomonas bacteria. Sensory tests consist of taste, odor, color and tissue were studied in the fish samples. 12% and 0.5 % concentrations at time = 0 of edible films made by WP and SA considered in study stage. This is can be due to the significant differences in total acceptance index of sensory tests. Control sample cleaned Kilka was packaged in disposable dishes with cellophane covers in 500gr in weight. Two selected timar and mixed cover including 12 % and 0.5 % concentrations at time = 0 of edible films by WP and SA considered in study stage. The covered samples were kept in -18 ֯C. Microbial, chemical and sensory examination were carried out for a period of six months. These factors and chemical factors consisting of humidity, protein, lipid, ash, calorie, Peroxide value, free fatty acids, thiobarbitoric acid, TVN and pH were studied in test samples compared with the control samples. Coliform, Escherichia coli and Pseudomonas bacteria contamination were negative until the end of storage period in the covered samples. The mean total bacterial count and Staphylococcus bacteria counts in processed samples by WP were 2.47 and 1.61 logcfu/g, in processed samples by SA were 2.84 and 1.28 logcfu/g, in processed samples by WPSA were 2.51 and 1.44 logcfu/g, and in control samples 4.11 and 2.93 logcfu/g from 1 day until six months after processing, respectively. The mean of moisture, peroxide value, TVN, pH, free fatty acids, thiobarbitouric acid , protein, fat, ash and calorie in the covered samples by WP were 73.91%, 0.13 meq/kgoil, 9.84mg/100g, 6.15, 1.15gr/100, 0/006 mg/kg, 19.00%, 4.25%, 2.1% and 120.73 kcal/kg, in the covered samples by SA were 73.91%, 0.06 meq/kgoil, 9.84mg/100g, 6.15, 1.15gr/100, 0/006 mg/kg, 18.85%, 4.72 %, 1.90 % and 125.98 kcal/kg, in the covered samples by WPSA were 73.91%, 0.06 meq/kgoil, 9.84mg/100g, 6.15, 1.15gr/100, 0/006 mg/kg, 18.50 %, 4. 65 %, 2.25 % and 126.48 kcal/kg and in control samples 59.43%, 3.25 meq/kgoil, 16.22mg/100gr, 6.71, 9.21gr/100, 0/15mg/kg, 18.2%, 4.00%, 1.80% and 107.10 kcal/kg, respectively. No statistically significant differences were observed in the results of chemical experiments of the covered samples and presence of the meaningful difference at the results of the chemical experiments of the control sample, The covered samples by WP, SA and WPSA up to the end of storage period at cold-room had a favorite quality but the control samples had lost their. No statistically significant differences were observed in the WP samples compared with the WPSA samples (p〉 0.05). Samples covered by SA had better quality compared with other samples which can be due to the presence of the significant difference in total acceptance index among covered samples without considering of economical worth.
    Keywords: Fisheries ; Iran ; Edible films ; Kilka packaging ; Quality evaluation ; Cooled storage keeping ; Chemical analysis ; Protein ; Sodium ; Samples ; Bacterial ; Protein ; Lipid ; Fatty acids ; Escherichia coli ; Pseudomonas bacteria ; pH
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 109
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 147
    facet.materialart.
    Unknown
    Survey the effects of live rainbow trout handling on fish meat quality (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25321 | 18721 | 2018-09-08 16:49:00 | 25321 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This research was performed to survey the live handling condition of Rainbow trout in Tehran province and determine the effects of this method on the quality of the flesh regarding with water binding capacity, pH changes, moisture, fat and protein content in different seasons of year. Based on reviews of Questionnaires, there were 20 main live rainbow trout sale centers in Tehran. 10 numbers of these were in fruit and vegetable centers of municipality and others were out of these centers. Live fish handling to in these areas mainly was performed from fish farms located in the Haraz road (85 percent), farms of Firoozkooh road (10 percent) and others were (5 percent) from neighboring provinces. The results of this study indicated that current methods of live handling in Tehran (the transporting time 4 h and the density of fish in tank 100-150 kg /m^2) meat quality of transported trout was not affected. Water holding capacity of transported fish was less than caught fish in the fields. This amount was reached to lowest level in in summer as well as the differences between the two groups were significant (P〈0.05). Also, when a meat pH level was elevated, water holding capacity was reduced. In summer, the amount of WHC in transported fish was 13.4% that was a highest value between the seasons. Appears that in the summer, high temperature and increasing kinds of stresses to fish during handling due to excessive accumulation of metabolites such as ammonia, muscle energy sources emptied because of high activity. In this condition, falling of pH during postmortem changes being moderated and lead to increase drip loss in the transported sample.
    Keywords: Aquaculture ; Fisheries ; Iran ; Tehran province ; Haraz ; Firoozkooh ; Live Handling ; Rainbow trout ; Meat quality ; Seasons ; pH ; Moisture ; Fat ; Protein ; Temperature ; Sample
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 82
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 148
    facet.materialart.
    Unknown
    The plankton of the Anzali Lagoon and coastal waters of the Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25111 | 18721 | 2018-08-23 06:01:27 | 25111 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The determination and identification of plankton species in the Anzali lagoon was carried out through a period of two years in 27 stations in the Shejan, Sakishima, Abkenar, Hendekhaleh andmain outlets of this lagoon from 1997 to 1999. The results of this study reveal that there are Totally 6 phyla of Phytoplankton that include, 134genera and 278 species of which 56 genera and 107 species belong to Phylum Chlorophyta, 39 genera and 87 species belong to Phylum Bacillariophyta (Diatoms), 2 genera and 2 species belong to Phylum Xanthophyta, 4 genera and 4 species belong to Phylum Chrysophyta, 6 genera and 34 species belong to Phylum Euglenophyta, 8 genera and 11 species belong to Phylum Pyrrophyta, 18 genera and 32 species belong to Cyanophyta and one genus belongs to phylum Rhodophyta. It is evident from these results that Cyanophyta and Bacillariophyta showed the highest density among Phytoplanktons with the highest Aboundance found in the Abkenar and southern Hendekhalehregions. Highest density of Cyanophyta was observed in Abkenar region during the end of spring and beginnings of summer. Bacillariophyta was observed all-round the year throughout the Anzali lagoon being more aboundant the end of autumn, winter and spring. Other phyla showed similar population densities throughout the year. study of Zooplanktons revealed the presence 11 phylum that include 133 genera and 211 species Anzali lagoon of which 10 genera 22 species belong to phylum Rhizopoda ,4 genera 4 species belongto Phylum Actinopoda, 32 genera 41 species belong to Phylum Ciliophora, one genus and one specie belong to Phylum Porifera, 3 genera belong to Phylum Coelantrata, 2 genera and 2 species belong toAnnelida, 2 genera 2 species belong to Phylum Platyhelminthes, 36 genera and 90 species belong toPhylum Rotatoria, one genus and one specie belongs to Phylum Tardigrada, 19 genera and 32 species belong to Phylum Arthropoda (order Cladocera), 7 genera and 11 Species belong to Class Copepoda, in Class Cirripedia and Ostracoda and Diptera(Family Chironomidae) each of them consisting of onegenus, 2 genera and 2 species belong to Class Archnida and in phylum Mollusca Class Bivalvia one genus was identified. It is evident from the present study that Rotrtoria was dominant in southern Hendekhaleh and Abkenar regions and the main outlets wherease Protozoa showed the maximum density in Shejan and Siakishem regions. Highest density of Zooplankton were observed in Hendekhaleh and Abkenar regions in end of Spring and during summer whereas all regions showed similar densities during the other seasons .
    Keywords: Biology ; Ecology ; Iran ; Caspian Sea ; Anzali lagoon ; Planktons ; Species ; Phylum ; Bacillariophyta ; Diatoms ; Xanthophyta ; Chrysophyta ; Euglenophyta ; Cyanophyta ; Rhodophyta ; Population ; Density ; Arthropoda ; Copepoda ; Bivalvia ; Mollusca ; Protozoa
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 90
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 149
    facet.materialart.
    Unknown
    The study of genetical differentiation of bisexual and parthenogenetic strains of Artemia urmiana by RAPD s method (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25124 | 18721 | 2018-08-26 13:25:27 | 25124 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The brine shrimp Artemia consists of a number of bisexual species and a large number of parthenogenetic forms, which collectively, inhabiting a wide range of hypersaline habitats. This research was carried out in order to study the genetic differentiation of Artemia urmiana and two parthenogenetic populations originated from surrounding lagoons of the Lake Urmia (Fesendoz, Saray village) and also to find the phylogenetic relationships of some Iranian Artemia (Qom, Arak, Golestan, and Shiraz) with a comparison to some foreign Artemia species (A. sinica, A. franciscana, A. parthenogenetica (Russia and Turkmenistan) using a molecular technique (PCRRAPD`s). Of a total number of 56 random primers (10 bp) survey, 29 and 26 oligonucleotides showed polymorphic patterns with highly reproducible bands in Artemia urmiana groups and Iranian Artemia groups.The highest percentage of polymorphic loci were in Artemia urmiana (P= 78.89 %) and in comparison with the other parthenogenetic forms, in parthenogenetic Artemia from Saray village (P= 59.8 %). The highest values of Shannon index were estimated in Artemia urmiana (I= 0.41), and in comparison with other parthenogenetic forms, in parthenogenetic Artemia from Saray village (I= 0.3). Analysis of molecular variance indicated that most variation were within populations (A. urmiana with parthenogenetic forms, FST= 0.35) and among populations (Iranian Artemia with foreign species, FST= 0.76). Genetic pattern was not in accordance to geographical distribution, which indicated the wide range of Artemia samples at different regions in Iran. UPGMA showed two distinct clusters in group I including A. urmiana with two parthenogenetic forms and four clusters in group II including Iranian Artemia with some foreign species. It is understood that two parthenogenetic populations (Fesendoz and Saray village) had close genetic relationship together with high value of heterozygosity in parthenogenetic Artemia from Saray village. Iranian Artemia (Qom, Arak, and Golestan) indicated close genetic relationships with A. parthenogenetica (Russia and Turkmenistan) with low values of heterozygosity. A sister group was generated including Shiraz and USA Artemia samples which attests a possible contamination of local water with A. franciscana. FST value revealed high genetic structuring at all studied groups. Besides, it is suggested that gene flow was not strong enough to prevent substantial genetic differentiation. Result could lead to a management programmes to use suitable Artemia strains with high genetic diversity, for culturing and establishment of gene bank of Artemia stocks in Lake Urmia.
    Keywords: Biology ; Fisheries ; Iran ; Lake Urmia ; Fesendoz village ; Saray village ; Artemia urmiana ; Parthenogenetic populations ; Iranian Artemia ; Phylogenetic relationships ; RAPD`s ; Shrimp ; Bisexual species ; Phylogenetic ; A. sinica ; A. franciscana ; A. parthenogenetica ; Survey ; A. urmiana
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 56
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 150
    facet.materialart.
    Unknown
    Study of water's physico-chemical characteristics in the southern Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25337 | 18721 | 2018-09-13 12:43:04 | 25337 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was conducted to determine the physico-chemical characteristics of water during four season and 8 transects (Astara, Anzali, Sefidroud, Tonekabon, Nowhshar, Babolsar, Amirabad, Bandar Tourkman) in the Southern of Caspian Sea in 2009-2010. 480 samples were collected at different water layers and then physicochemical parameters were measured based on standard methods. Result of this study showed that surface water temperature was varied from 7.2 to 29.8◦C in winter and summer, respectively. Minimum fluctuation of water temperature was observed at 100 m depth (6.8-10.3◦C). Mean value of water transparency was obtained 4.91±0.24 m. This value increased from inshore to offshore. pH value was fluctuated from 7.15 to 8.83 unit with variance of 1.54. Maximum DO concentration was observed at surface layer (8.40±0.08 mg/l) with 137±18 saturation and minimum was at 100 m depth (6.46±0.18) with 86.1±2.8 saturation. The nitrite, nitrate and ammonium concentration were ranged 0.0-0.2, 0.0-4.6 and 0.05-7.12 µM, respectively. Maximum value of TN was observed at inshore and minimum at offshore (100m). Nitrite concentration decreased from inshore to offshore but increased from surface to the bottom (100 m). The inorganic phosphorous increased at surface water and also at the bottom. Trend of inorganic and TP was similar. Minimum of N/P ratio were observed at summer (5.48±0.38) and maximum value at winter (9.13±0.46). This value of N/P ratio showed that the growth of phytoplankton was limited by nitrogen. The dissolved silicate was decreased from spring (230.7±6.65 µg/l) to winter.
    Keywords: Ecology ; Iran ; Caspian Sea ; Astara ; Anzali ; Tonekabon ; Nowhshar ; Babolsar ; Bandar Tourkman ; Sefiroud River ; Water ; Physico-chemical parameters ; Temperature ; pH ; Phosphorous ; Phytoplankton ; Nitrogen ; Dissolved silicate ; Fluctuation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 79
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 151
    facet.materialart.
    Unknown
    The study of abundance and biomass of Mnemiopsis leidyi in the southern of Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25347 | 18721 | 2018-09-13 13:02:23 | 25347 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In order to determine the impact of the new invasive ctenophore (Mnemiopsis leidyi) of the Caspian Sea, it is needed to monitor the temporal and spatial distribution as well as seasonal biomass fluctuation of this animal. At the present study, sampling was conducted in 8 transects such as Astara, Anzali, sephidroud, Tonekabon Nowshar, Babulsar, Amirabad and Bandar Torkaman. Each transect had four stations located at the points off the shore where the bottom depth was 5, 10, 20 , 50 and 100m, respectively. Ctenophore samples were collected with planktonic net and simultaneously some morphometric characteristics such as weight, length, abundance and biomass were measured. Statistical analysis was done based on the averages of year, season, location, depth and size of the M. leidyi. In 2008, mean abundance and biomass of M. leidyi were recorded 63±7 ind.m^3 and 7.70±2.34 g.m^3, respectively. M. leidyi abundance and biomass were ranged of 0-639 ind.m^3 and 0-158 g.m^3, respectively. The maximum seasonal average of abundance was 150 ± 17 ind.m^3 while the maximum biomass was 26.59± 4.61.m^3 in summer. There is a significant different between abundance and biomass in summer and autumn, respectively (p〈0.05). Comb jelly length in autumn was smaller than in summer. Minimum M. leidyi abundance was observed in spring (4.0±0.7ind.m^3) and winter (6±2ind.m^3). The lowest average of seasonal biomass was observed in winter (0.50±0.07 g.m^3). The maximum of M. leidyi biomass was recorded at the depth 5m of Anzali in summer 2008 with 639 ind.m^3 and 158 g.m^3, respectively. There was not significant different between abundance and biomass in various transects (p〉0.05). The results showed that the highest abundance and biomass coincide to photic zone (≤ 20 m in depth) in which there is a significant different between photic zone and various layer (p〈0.05). The maximum ctenophore size was recorded 55 mm in 2006 and 60 mm in 2007, in which it was 50 mm in 2008. The data of M. leidyi from 2001 to 2008 indicated that abundance and biomass of comb jelly decrease in trend. Therefore, the results showed that the M. leidyi is a superficial and littoral species in the southern Caspian Sea.
    Keywords: Ecology ; Iran ; Caspian Sea ; Astara ; Anzali ; Tonekabon ; Nowshar ; Bandar Torkaman ; Abundance ; Biomass ; Mnemiopsis leidyi ; Fluctuation ; Sampling ; Ctenophore ; Plankton ; Morphometric ; M.leidyi ; Species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 55
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 152
    facet.materialart.
    Unknown
    The study of diversity, distribution and abundance of zooplankton in the southern of Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25350 | 18721 | 2018-09-14 07:03:37 | 25350 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This survey was carried out in 8 lines of southern area of Caspian sea consisting of Astara, Anzali, Sefid roud, Tonekabon, Noshahr, Babolsar, Amirabad and Torkman in depths of 5, 10, 20, 50 and 100m in 4 seasons (spring, summer, autumn and winter) of the year 2008. The goal of this survey was identification of different species, distribution, density and Biomass of the zooplankton community in different regions and also their frequency in the different layers and depths and the population fluctuations in whole of year. The most abundance and biomass of the zooplanktons were 28005±24212 ind./m^3 and 180.58±149.03 mg/m^3 in 5 min spring and they were reduced gradually to depths. Copepoda comprised between 9 to 16 percent, Rotatoria comprised between 5 to 13 percent and Lamellibranchiata larvae comprised between 27 to 70 percent of marin zooplanktons. The most abundance and biomass were 11746±7921 ind./m^3 and 47.07±31.96 mg/m3, 5281±5521 ind./m^3 and 29.03±31.68 mg/m^3 in 5m of summer and autumn seasons, respectively. Copepoda comprised more than 95 percent of marine zooplanktons in all of depths in these seasons. The most abundance and biomass were 19030±16518 ind./m^3 and 198.99±217.23 mg/m3 in 5 m in winter. Copepoda comprised between 17 to 49 percent and Rotatoria comprised between 32 to 70 percent of marine zooplanktons in all of depths and the abundance of other groups was not considerable in zooplankton community.
    Keywords: Ecology ; Iran ; Caspian Sea ; Astara ; Anzali ; Sefidroud River ; Tonekabon ; Diversity ; Abundance ; Zooplankton ; Survey ; Density ; Biomass ; Population ; Distribution
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 99
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 153
    facet.materialart.
    Unknown
    Estimation of biomass and optimum of shrimp fishing season in Hormuzgan Province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25344 | 18721 | 2018-09-13 12:58:40 | 25344 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This project was designed with for objective on estimation of Biomass and optimum time for catch season of P.merguinsis and M.affinis shrimps. This investigation was carried out monthly by swept area method in coastal waters of Hormozgan province. The optimum time for fishing season in Bandar Abbas to Sirik waters in 2004,2005 and 2006 respectively was about 25/9/2004, 24/9/2005 and 25/9/2006. Total allowable catch (T.A.C.) for P.merguiensis and M.affinis estimated in 2004 to 2006 were 600, 170 tonnes, 850, 550 tonnes and 650, 400 tonnes respectively. The densest catch was obtained for P.merguiensis (from 58/5 to 65/5 %) and the least catch for P.indicus (from 0/04 to 1/1 % ), respectievly.
    Keywords: Fisheries ; Iran ; Persian Gulf ; Oman Sea ; Hormozgan Province ; Bandar Abbas ; Sirik ; P. merguiensis ; P.semisulcatus ; P. indicus ; M.affinis ; M.stebbingi ; P.stylifera ; Biomass ; Fishing season ; Shrimp
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 53
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 154
    facet.materialart.
    Unknown
    Possibility of trout farms efluent return to groundwater In non-agricultural seasons (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25358 | 18721 | 2018-09-14 07:33:31 | 25358 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This project is trying to investigate water contamination after use in ponds. For this aquaculture status, physical and chemical water properties, microbial pollutants and heavy metals levels in the some of trout ponds effluent in East Azerbaijan province were evaluated in 2007 to 2009. The information of groundwater and climate conditions in ten years, Drilling and wells piezometric Information, in local wells are reviewed. According to data obtained from analysis of water samples in the output pools range studied concentrations(term mg/l) some parameters are as follows:(BOD: 1.9-3.2), (COD: 3.4-34.1), (TSS: 26.6-42.7), (N-NO_2:0.003-.136),(P-Po4:0.0170.067), (pH:7.75-8.28). Electrical conductivity (500 ±2 to 1129±144 term µm/cm) in the effluent ponds. Based on the results of we can say that between input and effluent ponds in the review of all factors as chlorine, sulfate, sodium, potassium, total nitrogen, soluble phosphorus, total phosphorus, calcium, total hardness, magnesium, alkalinity and silica significant changes not be observed. Review of water analysis data to some factors (such as: water temperature, EC, pH, NO_2, CO_2, HCO_3, CO_3, DO, COD, BOD) and compare this data with the authorities standard confirmed that the All factors mentioned in effluent is allowed now. In terms of microbial contamination and heavy metals (Zn, Cu, Ca, Pb, Fe, Cr) is no pollution. Appropriate strategies for removing suspended materials must to use. We can use Watershed Management solutions to inject output water to the underground table. Should be noted status change (eg change in flow rate, an unusual increase in temperature, fish density increasing, reducing food quality, lack of appropriate management actions and ...) may reduce the effluent quality and the ability of injection water underground to lose. In this case, measures must be for wastewater treatment and improve the quality ponder.
    Keywords: Ecology ; Management ; Iran ; East Azerbaijan Province ; Effluent Trout ; Return ; Ground Water ; Non-agricultural ; Aquaculture ; Pollutants ; Heavy metals ; Samples ; Chlorine ; Sulfate ; Sodium ; Potassium
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 88
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 155
    facet.materialart.
    Unknown
    Survey of preservatives on shelf life of silver carp burger (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25126 | 18721 | 2018-08-26 13:44:22 | 25126 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In this research in order to assess the possibility of antioxidant effects in quality protection and increase the shelf alife of fish burgers, ascorbic acid as a antioxidant by natural source used in raw uncoated fish burgers and in order to comparison by vacuum packaging, 3 treatments of uncoated fish burgers produced from cultivated silver carp: 1- burgers by common packaging (control) 2- burgers by vacunm packaging 3- burgers by 500ppm Ascorbic acid. Also in order to comparison BHA+BHT antioxidants (that have synergistic effects to each other) effect by vacuum packaging to prevention of lipid oxidation in semi-fried fish burgers 3 other treatments produced too: 1- burgers by common packaging (control) 2- burgers by vacunm packaging 3-burgers by 200 ppm BHA+BHT antioxidants comparatively to fats of product. All of the burgers after production and freezing conserved in -18°c for 6 months (Raw uncoated burgers) and one year (Semi-fried coated burgers). During the storage period chemical, microbiological, and organoleptic tests were down by three repetition monthly. Although peroxide value in raw uncoated fish burgers were higher than standard range even from first month but it seems this factor is not suitable for quality evaluation of uncoated raw fish burgers. Evaluation of TBA index in raw uncoated fish burgers during storage time showed at the end of storage period TBA index for control, vacuum and ascorbic acid treatments were 6.31, 4.76 and 1.29 mg malonaldehyde/kg respectively and taste scores were 5.11, 5.42 and 6.16 respectively. Results indicate the positive effects of ascorbic acid to prevention of lipid oxidation. By attention to TVN, TBA and organoleptic tests 4 mounths for treatments without ascorbic acid by vacuum packaging preference and 6 months shelf life for ascorbic acid treatment have suggested in -18°c temperature. For semi fried fish burger 28 prevention effect for lipid oxidation but vacuum packaging had 32 (without significantly difference,P〉0.05). so we can for %BHA+BHT treatment this property was recommend the use of vacuum packaging instead of antioxidant treatment. By attention to TVN, pH, PV, TBA and microbiological and organoleptic tests we can suggest the 8 months for shelf life time of semi fried fish burgers. In this product TVN was the only limitation factor and exeeded from standard range at 9th month of maintenance.
    Keywords: Fisheries ; Iran ; Survey ; Silver Carp ; Burger ; Ascorbic acid ; BHA ; BHT ; Lipid ; organoleptic temperature ; Temperature ; Vacuum packaging ; Common packaging ; Fish
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 88
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 156
    facet.materialart.
    Unknown
    A study on stocks of trap s fishes in Abumusa Island (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25131 | 18721 | 2018-08-26 13:30:10 | 25131 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This report is about coral-reefs around Abumosa lsland from January 1998 till February 1999 by trap and underwater visual census. Total species belonging to genus and family were idemtified and length-weight relationship were estimated for more frequent species. Small tooth emperor (Lethrinus microdon) was predominate from other species. Catch per unit of effort (CPUE) calculated for each trap (large, medium and small). Efforts were based on number of trap and day. Cupue of small and large traps was further in late summer compare other seasons. Results of catch analysis showed that no differ catch value (eatable, fishes, ornamental fishes and total catch) between small-medium and medium-large traps. Value catch wasn t significant difference between three depth (0-10, 10-20 and 20-30m) and four geographical side, too. But, catch value of ornamental fishes was significant difference between depths 0-10 and 20-30 meter.
    Keywords: Fisheries ; Iran ; Abumosa Island ; Trap ; Length ; Weight ; CPUE ; Lethrinus microdon ; Species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 61
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 157
    facet.materialart.
    Unknown
    Establishment of herbarium (stock collection) of the algae of the southern part of the Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25129 | 18721 | 2018-08-26 13:48:51 | 25129 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The algal herbarium was set up and put into operation officially since 22 August 1993 at the Ghazian research station of the Gilan Fisheries Center. Several samplings were carried out from different regions of the Anzali Lagoon and Parts of the Southern shores of the Caspian Sea. The Samples Collected are being stored in the Laboratory in Living and non-Living form. 163 Living samples of 23 phytoplankton species are stored in the form of different types of inoculants liquid media and agar Plates. The species collected are as follows: Nodularia sp1, Nodularia sp2, Spirulina sp. Oscillatoria sp., Anabaena sp1,Anabaena sp2, Dactylococcopsis raphidiodes Lyngbia sp., Ankistrodesmus falacatus, Ankistrodesmus sp., Scenedesmus abundans S. acuminatus, S. obliquus, S. quadricada, Chlorella vulgaris Thalassionema nitzschioides, Cyclotella sp., Rhizosolenia calcar avis, Navicula sp., Bacillaria sp. Pure cultures of seven phytoplankton species have been developed which include: Scenedesmus abundans, S.obliquus, S. acuminatus, S. quadricada, Chlorella vulgaris, Spirulina sp.and Ankistrodesmus falcatus. The non-Living samples are stored dried or fixed in suitable Preservatives. More than 200 phytoplankton specimens are available in the Laboratory at present, of which 100 species have been identified.
    Keywords: Biology ; Iran ; Caspian Sea ; Guilan province ; Anzali Lagoon ; Herbarium ; Stock collection ; Algae ; Fisheries ; Samples ; Phytoplankton ; Species ; Spirulina sp. ; Nodularia sp. ; Oscillatoria sp. ; Anabaena sp. ; Lyngbia sp. ; Dactylococcopsis raphidiodes ; Ankistrodesmus falacatus ; Ankistrodesmus sp. ; Scenedesmus abundans ; S. acuminatus ; S. obliquus
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 58
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 158
    facet.materialart.
    Unknown
    Study on stocks of trap s fishes around Farur Island in 2008 (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25132 | 18721 | 2018-08-26 13:54:51 | 25132 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This report is about coral reef fishes around Farur Island and area between Bandar Lengeh and Farur Island. Specimens were sampled monthly from July 2000 to February 2001 by trap. Total of 64 species belonging to 46 genuses and 31 families were identified. Some of species were common in two areas. Length-weight and length- depth relationships were estimated for more frequent species. The growth rates for painted sweet lips (Diagramma pictum), Broomtail wrasse (Cheilinus lunulatus), Eagle ray (Lethrinus lentjan), Hunchback boxfish (Tetrosomus gibbosus) and Blassop (Chelonodon patoca) were obtained 〈2 and for other species 2-3.5. Mean length and weight of Batfish (Platax orbicularis) and John's snapper (Lutjanus johni) between two areas were significantly different (P〈0.05).Mean weight and body depth of Tiling queen fish (Scomberoides commersonnianus) and Javelin grunter (Pomadasys kaakan) and between two areas were significantly different (P〈0.05). Mean length, weight and body depth of Blaasop (Arothron alboreticulatus),Malabar blood snapper (Lutjanus malabaricus) and Orange-spotted grouper (Epinephelus coioides) not significantly different. Lm50 of some species were estimated.
    Keywords: Fisheries ; Iran ; Farur Island ; Coral reef fishes ; Trap ; CPUE ; Lm50 ; Diagramma pictum ; Cheilinus lunulatus ; Lethrinus lentjan ; Tetrosomus gibbosus ; Chelonodon patoca ; Platax orbicularis ; Lutjanus johni ; Pomadasys kaakan ; Arothron alboreticulatus ; Epinephelus coioides
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 59
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 159
    facet.materialart.
    Unknown
    The comprehensive study of possibility ecological control Mnemiopsis leidyi in Caspian Sea activity: The study and recognization parasitic fauna and Bacterial flore in ctenophore (Mnemiopsis leidyi and Bereo ovata) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25134 | 18721 | 2018-08-26 13:35:47 | 25134 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Bacterial flora and parasitic fauna of M. leidyi an exotic invader jelly fish to Caspian Sea ecosystem and B. ovata to Black sea an alternative biological control agent was studied. During summer 1382 to spring 1383, using routine Bacteriological work. 72 sample of sea water Caspian Sea obtained from depth 20 and 50 meters, 36 sample of M. leidyi from depth 20 meters, 10 sample of B. ovata and 3 sample of sea water (Black sea) were collected and according to Bacteriological was studied. 216 sample of M. leidyi from depth 10 to 50 meters of Caspian Sea and 47 sample of B. ovata from Black and Marmarreh Sea (Turkey) were collected and was studied. In this study no parasite from was identified in M. leidyi (Caspian sea) but 64 percentage and 73 percentage of B. ovata (Marmarreh and Black sea respectively) contaminated to Trichodina ctenophore at varians concentration B. ovata of Black sea (130 min 1050 max) and B. ovata Marmarre sea (420 min 2100 max). While B. ovata kept at high salinity of 21 ppt was more contaminated with this pretrichial protozoan (Trichodina) than in low salinity (12/5 ppt). in comparision of bacterial flore in two cetenophore (M. leidyi and B. ovata) was observed that some of bacteria such as micrococcus sp, Aeromonas sp. Bacillus coagulans in both ctenophore and some other bacteria such as Agromobacterium and chromobacterium only observed in B. ovata but other researcher have reported fram Caspin sea and some of bacteria to specific Shewanella , Vibrio harveiy and bacillus linens was observed in B. ovata . Of course specific bacteria cannot transfer to Caspian Sea (different of salinity black sea (2/1%) to Caspian Sea (1/25 %)). Therefore if B. ovata to introduce to south Caspian Sea for biological control population M. leidyi. it is necessary at first some of viral pathogen in aquatic animal (fish) such as VNN, IPN,IHN,VHS,SVC was studied and then with confidence 95% non-infestation B. ovata to viruses and pass from bath anti parasite and anti-bacterial must be introduce to south Caspian sea.
    Keywords: Ecology ; Health ; Iran ; Caspian Sea ; Black sea ; Parasite ; Bacteria ; Beroe ovata ; Mnemiopsis leidyi ; Agromobacterium ; Chromobacterium
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 55
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 160
    facet.materialart.
    Unknown
    Limnological investigating on Gahar-roud River and study of feasibility of exploiting for cold-water fish culture (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25136 | 18721 | 2018-08-26 13:46:00 | 25136 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Gahar-roud is in 18 kilometer far from Doroud city from East of lorestan province . This river orginated from internal part of Oshteran-kouh mountain altitude and Gahar-Lake . Survey on Gahar roud Limnology began from the end of 2001 year and during the 18 month achived, at first on the length of 20 kilometer five station of sampling was selected and biological, physical and chemical character of this river was surveyed this river in all path of it feeding with large and small spring, little rivers and water of icehouse. The amount water of this river is different and maximum water is about 21 m/s in April month. Specifity of this river is be enough the temperature of water for fish. Minimum in the Jan is about 3 centigrad deegree and maximum is July and Aug about 24 centigrade deegree phis between 6.5-8.2 and is few basic. solauble oxigen is enough and is between 8.5-13 mg/lit.during the year.This river is very bright and haven t the source of polution and during the path of river and be enaugh the dosage of mineral in water are the important physical and chemical character of this river. Gahar-roud is not biological hardness quality. About 31 genus and species from 5 family of phytoplangton and 42 genus from 26 family from the order of insects, molusca, worms and crustacea and 9 species from 12 family from the side aquatic. Plants was collected and recognized. Based on ecological potential of this region, because Gahar- Roud River is poor for food material and classified in oligotroph river and hasn t high biological value. And also have a few population and in fact haven t any population and based on the safer system belong to the quatiy elass of oligotroph and amount of water, regular circulation of water with microclima condition rate of natural resource land around river, having program for culture of cold water fish is important but it is better that use from culture of fish, be regulated key word limnology, Gahar-roud, river plangton, bentoz, fish.
    Keywords: Ecology ; Iran ; Gahar-roud ; Limnology ; Fish ; Bentos ; Plankton
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 84
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 161
    facet.materialart.
    Unknown
    Study of physico-chemical Characteristics of water in the southern of Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25387 | 18721 | 2018-09-20 11:19:25 | 25387 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was conducted to physico-chemical characteristics of water in the Iranian coastal of southern Caspian Sea during four seasons at 8 transects (Astra, Anzali, Sefidrud, Tonekabon, Nowshahr, Babolsar, Amirabad and Bandar Turkman) during 2009-2010. 480 samples were collected at different layers of water and then analyzed based on standard methods. Results showed that the mean of water temperature were 18.67±0.32 and 17.82±0.43 ◦C at the surface and euphotic layer, respectively. Minimum and maximum of water temperature were recorded in winter (6.40) and summertime (27.60). In addition, temperature gradient was ranged between 12 to 15 ◦C at 20 to 50 layers in 50 and 100m depths. Mean of salinity was 11.04±0.17 g/l at euphotic layer. Pearson correlation between temperature and salinity was positively significant. Therefore, maximum salinity was recorded in summer and minimum in winter. Mean of transparency (SD) in the present study was 4.35±0.21 m which compared to the pervious sampling period (2008) showed small decrease, but the mean of pH was observed 8.43±0.01 which was higher than the previous sampling period (2008). The mean of DO and DO% were observed 5.72±0.06 ml/l and 130±1 percent at euphotic layer during sampling period. The mean of DO% was recorded 104±5 at euphotic layer in 1996 (before introduction of Mnemeiopsis leidyi), but the study in the years 2004, 2008 and present (one decade after introduction of Mnemeiopsis leidyi) this value was registered higher than 120% at euphotic layer. This shows that trophic status of Caspian ecosystem shifted from oligotrophy (before introduction of Mnemeiopsis leidyi) to meso-eutrophy (after introduction of Mnemiopsis leidyi). Annual concentration of inorganic nitrogen (DIN= NH^4 +, NO^2-, NO^3-) has a fairly wide variation. Percentage of nitrogen components out of DIN were varied 9-98, 0.2-28.2 and 0.0-90.0 respectively. In this study, percentage of DIN was lower than 15% and organic nitrogen (DON) was higher than 80%. Overall, results showed that water temperature, salinity, transparency and DON were recorded lower than the previous study (2008), but DO, DO%, pH, NH^4+, NO^3- and DSi were higher than the previous sampling period. Inorganic phosphorous (DIP) and NO^2- have not changed substantially. N/P ratio of Caspian Sea has a narrow range which order of magnificent lower than other seas. The results of the present study showed that Caspian ecosystem was nitrogen limitation before introduction of Mnemiopsis leidyi, while it seems that after introduction of Mnemiopsis leidyi the system has been shifted to the phosphorous limitation.
    Keywords: Ecology ; Iran ; Caspian Sea ; Astra ; Anzali ; Tonekabon ; Nowshahr ; Babolsar ; Sefidrud River ; Physico-chemical parameters ; Nutrients ; Water ; Temperature ; Salinity ; Euphotic layer ; Sampling ; Mnemeiopsis leidyi ; Oligotrophy
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 104
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 162
    facet.materialart.
    Unknown
    The purification of Cochlodinium. Sp and a comparative research on its mass cultivation (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25391 | 18721 | 2018-09-20 11:27:50 | 25391 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Cochlodinium is a dinoflagel that, with their bloom in the coastal water of worlds, can case fish mortality. Cochlodinium was detected in Persian Gulf, since 2008. After purification of C. polykricoides with light, the culture of cochlodinium, with medium of f/2 (modified), Guilard (f/2-Si), TMRL, Conway, ESM and the mixed of sea shore sediment with salt water (32 ppt) was done. The culture of cochlodinium in test tube, erlanmeyer with volume of 200-1000 ml and aquariums with the volume of 16 liter (each with 10 liter water) with three replicates in each treatment were done. Only the culture of cochlodinium with f/2 (modyfied) was possible in the aquarium. The culture of cochlodinium with TMRL medium in aquarium was not desirable and only in one aquarium from 3 aquariums, the density of cochlodinium reached to 910.000. cell per liter. The use of f/2 (modyfied) medium in the test tubes, and erlanmeyers, with the volume of 100-1000 ml, lead to suitable cochlodinium bloom. The maximum cell density in total treatments (with 3 replicates in each treatment) in test tube 3.283.000. cell (in 15 days), in erlanmeyer with 200 ml volume, 6.393.000. cells (in 22 days), in erlanmeyer with 500 ml volume, 2.833.000. cells (in 40 days) and in aquarium 3.600 .000. cells (in 46 days) counted. Cochlodinium culture with TMRL Medium in test tube and erlanmeyer was done successfully, but with the increase of erlanmeyer volume, the blooms of cochlodinium was lesser than f/2 (modyfied) medium. The maximum of cell count of TMRL Medium in test tube 2.683.000. cells (in 12 days), in erlanmeyer with 100 ml volume, 3.207.000. cells (in 36 days), in erlanmeyer with 250 ml 3.040.000. cells (in 18 days), in erlan with 1000 ml 2.325.000. cells (in 34 days) and in aquarium 550.000. cells (in 28 days) in each litre. Unsuccessful culture of cochlodinium with Conway medium, Gyllard (f/2-Si) and mixed salt water (32 ppt) with sea shore sediments, even in the test tube, indicated that these mediums weren’t suitablefor copchlodinium culture. With the increase of erlanmeyer volume, the success of ESM medium decreased. But, in test tube and in erlanmeye with 100 ml volum, was almost, successful. We can concluded that, cochlodinium culture required, special condition and medium, that in f/2 (modyfied) medium the culture of cochlodinium was successful. The maximum cochlodinium cell count was 6.5 million per liter in one aquarium. The mean of 3 replicate of this treatment was 3.600.000. cells per liter with f/2 (modified) medium. For culture of cochlodinium polykricoides, the f/2 (modyfied) medium was better than others mediums.
    Keywords: Ecology ; Iran ; Persian Gulf ; Cochlodinium ; Different culture mediums ; Cell density ; Laboratory condition ; Purification ; Cochlodinium.sp ; Dinoflagel ; Mortality ; C. polykricoides ; Culture ; Aquarium ; Sediments ; Cochlodinium polykricoides
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 48
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 163
    facet.materialart.
    Unknown
    Quantitative and qualitative development of shrimp culture in Iran (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25398 | 18721 | 2018-09-20 11:49:39 | 25398 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Primary researches on aquaculture of endemic shrimp species carried out since 1984-5 by Iranian Fisheries Research Organization (IFRO) .After a decade, the condition for extension and development of shrimp culture in the country prepared. Despite huge investment of government for preparation and construction of shrimp sites, only small part of present potential in southern coast of the country is under production. About 18 different shrimp species inhabit in Persian Gulf and Sea of Oman, in which 4 species have larger size, and more abundant, and harvest commercially . Penaeus semisulcatus, Fenneropenaeus merguiensis and Metapenaeus affinis as commercial species distributed throughout of Persian Gulf from mouth of Arvand River in north- west to strait of Hormoz, and also some parts of Oman Sea. While Fenneropenaeus indicus distributed mainly in coastal area of Oman Sea. Shrimp culture begin in Iran by P.semisulcatus, continued by imported Penaeus monodon, and developed by using of F.indicus. After confront to slow growth and viral diseases in 2001 (Khouzestan province) and 2005 (Bushehr Province), at the same time I.F.R.O acquired the bio-technique for production of Litopenaeus vannamei, and hence the condition for introduction the new species to the shrimp culture industry provided. In accordance for development of shrimp culture, I.F.R.O carried out various research activities, and established specific research center for this purpose. Research projects regarding brood-stock management, breeding and larvae production, grow out, water management and disease identification and treatment have been carried, and induced considerable impacts on quantitative and qualitative development of shrimp culture in the country.
    Keywords: Aquaculture ; Iran ; Persian Gulf ; Oman Sea ; Khouzestan Province ; Bushehr Province ; Arvand River ; Shrimp ; Aquaculture ; Quantitative and Qualitative Development ; Culture ; Species ; Fisheries ; Abundant ; Fenneropenaeus merguiensis ; Metapenaeus affinis ; P.semisulcatus ; F.indicus ; Breeding
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 180
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 164
    facet.materialart.
    Unknown
    The survey of diversity, distribution and abundance of phytoplankton in the southern of Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25416 | 18721 | 2018-09-23 16:43:36 | 25416 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The survey sampled during the fourth stage of the season was in 1387. Sampling in eight directions perpendicular (transect) to the beach and 480 samples was performed. In each transect from Astara to the Turkmen 5 stations at depths of 5, 10, 20, 50 and 100 m were selected for sampling. The total number of 191 species was identified; Bacillariophyta category species number was 97, equivalent to %50.8, category of Chlorophyta 28 species, equivalent to %14.7, category of Pyrrophyta 26 species, equivalent to 13.6 %, category of Cyanophyta 25 species, equivalent to 13.1% and category of Euglenophyta 15 species, equivalent to 7.9% of all species formed. Average abundance of phytoplankton was 27947500(SD=2465184) n/m^3. The average biomass was 125.51(SD=8.84) mg/m^3. Abundance and biomass in spring and summer, autumn and winter have been significant differences (p 〈0.05). The highest frequency was in winter, autumn, summer respectively and spring was (p 〈0.05) and the highest biomass in winter, fall, spring and summer was respectively (p 〈0.05). Bacillariophyta category has the highest abundance equal to 14390833 ± 16262.35 n/m^3 (mean ± standard error) were equivalent to %51.49 of the total abundance, Euglenophyta category has the least density equal to 109791 ± 16262.14 n/m^3 (mean ± standard error), which is equivalent to % 0.39 of total abundance were included. Also Pyrrophyta category has the highest biomass equal to 69.66 ± 5.53 mg/m^3 (standard error ± mean) were equivalent to %53.14 of the total biomass and Chlorophyta category with an average of 0.68 ± 0.11 mg/m^3 (mean ± standard error) have the lowest biomass, were equivalent to %0.54 of the total. Phytoplankton Categories in every season, with biomass and abundance have been different (p 〈0.05). Abundance and phytoplankton biomass in the upper layer and lower layer varies with depth of 50 meters (p 〈0.05). With distance from shore and depth increases, reducing the mean abundance and biomass were observed (p 〈0.05). The highest and lowest abundance of phytoplankton was observed at depths of 10 and 100 meters respectively. The maximum amount of phytoplankton biomass in surface areas of deep stations 20 m and the lowest biomass sampled at the deepest point of the station was 100 meters. Abundance and biomass of phytoplankton in the deep layers of the sample with significant difference (p〈0.05). So that the highest abundance layers of 10 m, the surface layer of 5 m, 20 m, 50 m and 100 m, respectively(p 〈0.05), and the most biomass in the surface layers of 5 m, 20 m, 10 m, 50 and 100 meters, respectively (p 〈0.05). Abundance and biomass of phytoplankton in transects was significant difference (p 〈0.05). Most phytoplankton respectively transect Astara, Babolsar, Anzali Amirabad, Turkmen, Sefidrud, Noshahr, Branch was observed (p 〈0.05) and in terms of biomass, respectively transects Astara, Anzali, Sefidrud, Babolsar, Noushahr, Branch, Amirabad and Turkmen values were higher (p 〈0.05). Species diversity indexe (Shannon – Wiener) phytoplankton was equivalent to 2.92. Environmental conditions and nutrients in different seasons on these parameters influenced the way that species diversity was lowest in summer and in autumn, winter, and spring, respectively, species diversity increased.
    Keywords: Ecology ; Iran ; Caspian Sea ; Phytoplankton ; Seasonal distribution ; Biomass ; Abundance ; Biodiversity
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 89
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 165
    facet.materialart.
    Unknown
    Stock assessment of sardine and anchovy in Hormuzgan Province with emphasize on fisheries data (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25463 | 18721 | 2018-09-26 10:37:45 | 25463 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Stock assessment of sardine and anchovy fishes in Persian Gulf and Oman Sea (Hormuzgan province) using fish population dynamics parameters and stock assessments models were carried out to estimate maximum sustainable yield (MSY) from 2010-2012. Results of 16 years (1996-2012) fisheries data analysis showed the mean of CPUE (catch/shooting) were calculated for Gill nets, Beach siene and Purse siene as 134, 988 and 2338 kg/shooting respectively. Relationships of catch and effort were determined for Qeshm area (R2=0.94) , Bandar Lengeh area (R2=0.51) and Jask area (R2=0.73) as a polynominal increasing model. Population dynamics parameters using monthly length frequency of 10540 sardine and 8232 anchovy by FiSAT II from Persian Gulf (Qeshm-Bandar Lengeh) and Oman Sea (Jask) fishing areas. Growth parameters K and L_∞ of sadine (Sardinell sindensis) were estimated 1.18 y^-1 and 19.1 cm in Persian Gulf and 1.11 y^-1 and 19.1 cm in Oman Sea, and also for anchovy (Encrasicholina punctifer) were estimated 1.20 y^-1 and 9.2 cm in Persian Gulf and 1.18 y^-1 and 9.3 cm in Oman Sea. Anually, 5 cohorts for sardine and 2 cohorts for anchovy were estimated using Bhattacharya method in Persian Gulf and Oman Sea. Natural mortality (M) and fishing mortality (F) were estimated for this species, and exploitation rate of sardine were calculated as 0.58 and 0.44, and exploitation rate of anchovy were 0.54 and 0.34 in Persian Gulf and Oman Sea respectively. Length of catch (LC) were calculated 11 cm and 12 cm, and for anchovy 6.8 cm and 6.6 cm in Persian Gulf and Oman Sea respectively. Length–weight relationships of sardine and anchovy were calculated as isometric growth. Results of this study showed that populations of sardine and anchovy in Qeshm and Bandar Lengeh area are a single-unite stock, no enough evidence for discrimination of sardine and anchovy populations in Persian Gulf and Oman Sea. The mean anuall biomass of sardine and anchovy were estimated using Thompson and Bell model 190000 tones in Hormuzgan province. Maximum sustainable (MSY) of sardine and anchovy were estimated between 59721 and 98309 tones in this area. MSY of sardine were calculated 15222 and 3182 ton and MSY of anchovy were 36237 ton and 5080 ton, for minimum of estimated MSY in Persian Gulf (Bandar Lenghe-Qeshm) and Oman Sea (Jask) respectively. Using yield per recruit of Beverton and Holt model , F0.1 were estimated averagely 1.75 for sardine and anchovy in Hormuzgan province and its showed the underfishing condition. Survey of catch and efforts trend in sardine and anchovy, defined development phase of small pelagic fisheries in Hormuzgan province.
    Keywords: Fisheries ; Iran ; Persian Gulf ; Oman Sea ; Hormuzgan province ; Qeshm ; Bandar Lengeh ; Jask ; Sardine ; Anchovy ; MSY ; CPUE ; Population dynamics ; Stock assessment ; Gill nets ; Growth ; Mortality ; Species ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 124
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 166
    facet.materialart.
    Unknown
    A study on water quality and physio- chemicals parameters in surface water, underground water and wastewater of Mangol dam basin (Mazandaran province) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25471 | 18721 | 2018-09-26 09:48:04 | 25471 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was conducted to determine water quality of surface water (7 stations), ground water (5 stations) and wastewater (4 stations) at Haraz River during instruction of Mangol Dam in 2009-2010. This study is to follow physico-chemical fluctuation of waters and compared the data obtained with previous studies and standard levels. Results of current study showed that annual mean with standard error of temperature, DO, BOD_5, COD, HCO^3-, CO_3^2-, TA, Ca^2+, Mg^2+, TH, TSS, TDS, Cl^-, PO_4^3-, NH^4+, NO2- and NO3- were observed 12.7 (±0.61) centigrade, 10.13 (±0.12), 2.1 (±0.1), 7.71 (±0.99), 28.1 (±6.1), 14.34 (±1.64), 36.30 (±2.33), 64.66 (±2.34), 28.84 (±1.52), 271.62 (±8.41), 0.37 (±0.03), 0.30 (±0.02), 28.02 (±1.96), 0.06 (±0.01), 0.010 (±0.001) and 0.94 (±0.03) mg/l, pH was 8.00 (±0.02) and EC 0.50 (±0.02) ms/cm in surface water. The annual mean with standard error of temperature, HCO^3-, CO_3^2-, TA, Ca^2+, Mg^2+, TH, TSS, TDS, Cl^-, PO4^3-, NH^4+, NO^2- and NO^3- were observed 21.62 (±1.03) centigrade, 54 (±5), 11 (±5), 57 (±5), 208.6 (±42.5), 109 (±23), 1088 (±165), 0.065 (±0.017), 0.97 (±0.11), 317.8 (±76.2), 0.25 (±0.06), 0.06 (±0.01), 0.0007 (±0.0001) and 0.78 (±0.05) mg/l, pH was 7.37 (±0.07) and EC 1.98 (±0.23) ms/cm in underground water. In addition, the annual mean with standard error of temperatute, DO, BOD5, COD, TSS, TDS, and NO3- were observed 12.7 (±0.61) centigrade, 13.59 (±0.87), 9.80 (±0.12), 2.22 (±0.18), 7.54 (±1.02), 0.50 (±0.03), 0.320 (±0.008) and 0.990 (±0.016) mg/l, pH was 7.95 (±0.02) and EC 0.64 (±0.01) ms/cm in wastewater. Quality of surface water of Haraz River and its branches were almost contained suitable for usual applications, but sometimes the quality of surface water based on BOD5 need to more attention for man uses (such as supply of drinking water). In addition, the quality of surface water was relatively suitable for aquatic based on the aquatic standard levels. Results also showed that water quality index (WQI) was declined from upstream to downstream and some parameters were not in standard ranges. The quality of surface water classified in group II at all stations based on water classification rules which it shows serious water quality changes due to environmental destroyed and domestic, agriculture sewage pollutions. Groundwater were affected by different springs at middle and downstream which they caused change physico-chemical characteristics and water quality. Wastewater was classified from good to moderate based on BOD5. The quality of wastewater was declined at downstream with decreasing DO and pH and increasing BOD5 and pollutants.
    Keywords: Ecology ; Iran ; Mazandaran province ; Mangol Dam basin ; Haraz River ; Physico-chemical characteristics ; Surface water ; Ground water ; Wastewater ; Temperature ; Aquatic ; Agriculture ; Pollution ; pH
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 86
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 167
    facet.materialart.
    Unknown
    Ecological interaction between commercial fishes in the Persian Gulf (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25473 | 18721 | 2018-09-26 09:53:23 | 25473 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: An ecosystem-based management fishery is a new way of looking at management of living resources. Trophic levels of basic food items, feeding habits, growth and mortality rate of 20 exploited fish species (including commercial and bycatch) are investigated in the Persian Gulf (from the provinces of Khuzestan, Bushehr and Hormozgan) from 2010 to 2012. The model considers trophic interactions among 12 functional group of the ecosystem involving Phytoplankton, Zeoplankton, Cephalopods, Shrimp, Infauna Benthos, Epifaunal Macrobenthos, Demersal Zoobenthos Feeders, Small Pelagic Planktivorous Fish, Benthoplagic Feeder, Piscivorous, Large Benthic Carnivores And Small Benthic Carnivores. In general 7452 of stomach contents samples were analyzed based on the weight and numerical method and were detected about 40 preys. The results demonstrated gaps in our knowledge on the food web structure. The mean trophic levels were varied from L. klunzingeri (2) to S. tumbil (4.64), while the total catch of some species were fluctuating widely. Result of our study showed that Total mortality varied between 0.45 per year (A. suppositus) to 9.5 per year (P. indicus) and food consumption rate also fluctuated by 1.9 (L. johni ) to 89 (L. lineolatus). The results indicated that some fish species including sardine, Anchovies, small carangids, S. stridens with high frequency in ecosystem, have been occupied in the food web as a wasp-waist. The model showed that most hunters groups live in middle levels in the food web such as N. japonicas, A. latus, P. kaakan, L. nebolusus, P. indicus and T. lepturus . Analysis the catch rate during 2001-2011 reveled that there is a clear trend of declining most of fish species catches in this research except for T. lepturus, P. kaakan and sparids which lead to upset the fundamental ecological balance of the Persian Gulf in future.
    Keywords: Ecology ; Iran ; Persian Gulf ; Trophic level ; Functional group ; Prey ; Trophic interaction ; Fish
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 131
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 168
    facet.materialart.
    Unknown
    Stock assessment of banana shrimp (Penaeus merguiensis) in coastal waters of Hormozgan Province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25482 | 18721 | 2018-10-05 06:56:38 | 25482 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The survey was conducted during 2010 and 2011 on the banana prawn stocks in Sirik to Dargahan in Strait of Hormoz. Samples was taken by bottom trawl boats monthly. Growth in the prawns (male and female) was allometric and length of maturity in female was 31.7 (mm CL). Spawning season was occurred in winter from Jan to March. Growth parameters (K, L_∞) were 1.6 y^-1 and 49 (mm CL) for female and 1.9 y^-1 and 38 (mm CL) for male respectively. Instantaneus mortality rate (M, F and Z) calculated 2.6, 1 and 3.6 y^-1 for female and 3.1, 1.4 and 4.5 y^-1 for male respectively. Banana shrimp recruited at to fishing ground in Jun and Jul. Opening time for starting catch at 2010 was calculated at 28/09/2010 and total allowable catch was 1380 tones. At 2011 starting catch was calculated at 29.09.2011 and total allowable catch was 1480 tones. Time for end of catch season were stimated at 04.11.2010 and 21.11.2011 for each year. According to yield per recruit model, the best size of the banana prawn was 30 (mm CL) for female.
    Keywords: Fisheries ; Iran ; Persian Gulf ; Oman Sea ; Hormozgan province ; Banana shrimp ; Penaeus merguinsis ; Stock assessment ; Yield per recruit ; Spawning ; Season ; Survey ; Coastal waters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 63
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 169
    facet.materialart.
    Unknown
    Improvement the texture properties and acceptability of silver carp investigation on possibility of burger by addition pectin in the fish burger material (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25489 | 18721 | 2018-10-05 06:51:09 | 25489 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In this study the physical properties of silver carp burger over a period of six months at a temperature of -18 ċ were studied using pectin. Indicators such as hardness texture, juiciness, flavor and overall acceptance of the product containing. The product were evaluated using qualified assessors، the microbial, chemical markers to evaluate the qualitative change such as peroxide treatments, total volatile nitrogen bases ، total count of bacteria and examined psychotropic of tests six months of treatments carried out on a monthly basis. The results indicate that the addition of pectin 0.3 percent of total admissions acceptance of burgers tissue was obtained and significant differences are. The chemical test results were also increased with storage time burger in refrigerators -18 degrees. Range of volatile nitrogen bases out of 15.2±1.2 at the time of 26/5±1.17 mg/100, the peroxide from 0.6±0.61 to 3/56±0.6 meq/kg of oxygen was. Thus despite a significant increase in indicators of physical Chemical and sensory evaluation of texture analysis. In the past six months storage period of -18 degrees, burger productive uses of pectin 0/3 percent of the limit between acceptable and will was.
    Keywords: Fisheries ; Burgers ; Fish ; Silver Carp ; Storage ; Quality ; Changes ; The shelf life ; Texture ; Pectin ; Nitrogen ; Bacterial ; Psychotropic
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 42
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 170
    facet.materialart.
    Unknown
    Study on some physico-chemical parameters in the southern of Caspian Sea- Mazandarn Province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25490 | 18721 | 2018-10-05 07:30:52 | 25490 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was conducted to determine physico-chemical characteristics of water and their spatial and temporal fluctuations in the Mazandaran coastal of Caspian Sea in 6 months, four seasons at 4 transects (Tonekabon, Nowshahr, Babolsar, Amirabad) during 2012-2013. 72 samples were collected at surface layer of water in 5, 15 and 30m depths. Then the sampls analyzed based on standard methods. Results showed that the mean of water and air temperature were 19.46±0.85 and 20.25±0.78◦C, respectively. Minimum and maximum of water temperature were recorded in winter (7.00) and summer time (28.10). Mean of salinity was 12.35±0.13 ppt. The maximum salinity was recorded in summer and minimum in winter in all transects. Mean of transparency (SD) in the present study was 2.63±0.18m. The mean of pH was observed 8.51±0.02 which was higher than the previous sampling periods. The mean of DO was observed 6.00±0.07 ml/l during sampling period. Annual concentration of dissolved inorganic nitrogen (DIN= NH4 +, NO2-, NO3-) has a fairly wide variation in different months and transects. Percentage of nitrogen components out of DIN were varied 6-53, 0.14-26.0 and 37.0-94.0 respectively. In this study, percentage of DIN was lower than 15% and dissolved organic nitrogen (DON) was higher than 80%. Mean of annual dissolved inorganic phosphorous (DIP) and organic phosphorous were 0.58± 0.04 and 0.48± 0.02 µM, respectively. DIP and DOP percentages recorded 54 and 46 respectively. Mean annual of dissolved silicon (DSi) obtained 9.5± 0.2 µM. Based on the results, the system was in phosphorus limitation during spring and summer but it shifted to nitrogen limitation in autumn and winter. Phytoplankton development was not limited by DSi at any seasons.
    Keywords: Ecology ; Iran ; Caspian Sea ; Mazandran Proviece ; Physicochemical parameters ; Nutrients ; Samples ; Temperature ; Salinity ; Transparency ; pH ; Dissolved inorganic nitrogen ; Phytoplankton
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 70
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 171
    facet.materialart.
    Unknown
    Investigation on possibility of producing combined burger by mixing chicken and fish (kilka) meat (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25511 | 18721 | 2018-10-05 07:49:35 | 25511 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: In this study, Burgeres with different ratios of chicken to Kilka fish (Clupeonella sp.) meat were produced: F1 (100:0), F2 (75:25), F3 (50:50), F4 (25:75) and F5 (0:100). Analyses of the physicochemical properties and chemical compositons of the samples were carried out. The proximate contents of raw samples were significantly different (p〈0.05) among all samples with different formulations. In order, from samples F1 to F5, protein (20.58 to 15.58%) and carbohydrate (3.16 to 2.03%) contents exhibited a decreasing trend, while, fat contents (2.58 to 7.53%) and energy value (118/20 to 139.45 Kcal) showed increasing trends as the fraction of kilka fish meat was increased in the formulation but there was no relationship between fish and chicken meat ratio with moisture and ash contents. According to the sensory evaluation results, there was a decreasing trend in scores of color, flavor, texture, aroma, and overall acceptability attributes from F1 to F5 as the fraction of kilka meat was increased to formulation, while, kilka fish burger (F5) gained high score respect to mounth feeling attribute but there were no significant deferences (p〈0.05) with respect to texture and overall acceptability between samples. The results also showed that raw and cooked burgers having higher ratios of fish meat had a darker color, with the lithness ( L*), redness (a*),yellowness ( b*) and chroma (C) values decreasing from sample F1 to F5. but hue-angle (h*) value was different. After cooking process (pan frying), the a* value was decreased and L*, b*, C* and h* values were increased. Cooking properties analysis results showed that burgers with higher ratios of chiken meat had more shrinkage (8.52% for F5 and 12.59% for F1), fat retention(161.53- 243.41%)and water retention(67.67- 70.57%) values than burgers with higher ratios of fish meat but, there was no any relationship between kind of meat and cooking yield values. Texture analysis of samples showed that burgers became harder when more chiken meat was incorporated in the formulation. These results demonstrate that burgers with kilka fish and chiken meat formulation have better attributes than kilka fish burgers and preferable formulation is F2 (75% chiken meat & 25% kilka fish meat).
    Keywords: Aquaculture ; Fisheries ; Iran ; Kilka fish ; Burgers ; Chicken meat ; Cooking yield ; Chemichal composition ; Sensory evaluation ; Texture ; Clupeonella sp. ; Investigation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 76
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 172
    facet.materialart.
    Unknown
    Production of the burger combination kilka-silver carp and evaluation the nutritional value and shelf life it during cold storage period (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25508 | 18721 | 2018-10-05 08:02:48 | 25508 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Kilka fish burger and silver fish is product of minced fish meat kilka and silver carp are mado of flavors , fillings, vejetables and spices.this fusion can be made on a toasted (fried or raw) and be marketed. The project was to replace the effects of different amounts of kilka fish instead of meat silver carp burger in preparing the consolidated on acceptance and qualitative changes in the past 5 months were examined and selected the best treatment for the industrial manufacturing industry in presented .Therefore , the four treatments with a variety of burger meat mixed with kilka and silver carp have been defined and the sensory evaluation were prepared . Based on statistical tests , selected treatment 3 (kilka hundred percent) in terms of flavor and color is in the highest rating. Also, the control treatment in term of taste, odor and color is in second priority. It is noteworthy that treatments 1 and 2, in the next priority is accepted. Goals of this plan is consolidation of kilka and silver carp in preparation of consolidated burger in order to financial purpose in final product. Chemical, microbiological, sensory evaluation and free fatty acie of the product during the 5 months storage at -18°C is illustrated that, the product is maintained its quality during the entire sensory and chemical paraments.
    Keywords: Fisheries ; Iran ; Consolidated burger ; Kilka fish ; Silver Carp ; Qualitative evaluation ; Freezing ; Fatty acids
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 116
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 173
    facet.materialart.
    Unknown
    Study on physico-chemical properties of the Iranian waters in the Oman Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25521 | 18721 | 2018-10-05 15:44:32 | 25521 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The characteristics physicochemical studies in the northern part of the Oman Sea and Strait of Hormuz within the Iranian waters were conducted during 2007 and 2009.The project was implemented using Ferdous research vessel and with the cooperation of Chah Bahar Research Center. The sampling area included the whole stretch of the Iranian waters along the northern part of the Oman Sea from the northeast of the Iranian marine border of 30 miles Bay of Chabahar to the mouth of the Hormuz Strait in Hormuzgan province. Along this stretch 10 equally distributed transects at a distance of 30 miles away from each other were designated, 4 main sampling stations at a distance of 10 miles from one another were fixed at each transect. Sampling was conducted twice a year ( spring and autumn 2007 and 2009).Physicochemical parameters of water such as temperature, density, salinity, turbidity, dissolved oxygen, pH, EC and chlorophyll-a were recorded at stations using CTD multiparameter probe. Nutrients samples were collected by multi water sampler and were measured by spectrophotometric method. According to achieved results; we can point out to the following outlines below: The beginning of thermocline layer starts in the regional Iranian Territorial Waters of Oman Sea; located at approximate depth of 10m; in spring, 20-40m; in autumn, and at 100m depth in winter; seasons, with an average difference in temperature of 10˚C; between surface and deeper layers. In another word, permanent thermocline exists annually in this body of water; where only the point of start, and the fracture width of thermocline layer; alter with alteration of seasons. Horizontal and vertical distribution of electrical conductivities, obey exactly from thermal degree structure; in such a way that, with increase in temperature; they increase, and with decrease in temperature; they decrease. Level of salinity increase from east to west, but it decrease; from surface to deeper layers. In deeper regions, especially in the midway east of the Oman Sea; the level of salinity in the deeper waters from 150-300m, there is a considerable increase observed in salinity, due to very high salinity waters of The Persian Gulf; that are entering the Sea of Oman, via the Striate of Hormouz from the bottom; where they are having their effect following the whole length of the Sea of Oman; through their path. The level of water density from offshore to onshore, and from surface to deeper levels increase in such a way that; its average in surface layers is 24g/cm^3, and at 400m depth; is 29g/cm^3, and at 600m; reaches to 30g/cm^3. The level of Chlorophyll-a in surface waters, in the northeastern midway; is higher than the northwestern midway of the Sea of Oman, and it decreases from inshore to offshore waters, but its vertical distribution; has caused somehow in a way, that the highest distribution and concentration of chlorophyll-a; to be formed in deeper layers, between about 20-40m depths. Then by the increase in water depth, its concentration decreases drastically; reaching zero in magnitude. Concentration of dissolved oxygen is higher in spring in comparison to that of autumn, and the highest level is achieved in water layers located at 10-40m depth (where the level of chlorophyll-a is higher). In addition to which, that its vertical structure; shows the existence of a permanent oxycline layer at this region, in a way that; by seasonal alterations (similar to that of thermocline layer), only the point of start and that of the thickness of oxycline layer changes. The layer of oxycline is established from seawaters; located at 10m depth in spring, and at20-40m waters in autumn; whereas the same layer is formed at 100m seawaters in winter, and then by water depth increase; it reaches crisis condition. The highest level of water pH; has been achieved in the spring of year 2009 (1388 Iranian Calendar), where some northern and northwestern regions of the Strait of Hormouz; were suffering from the remnants of red tide occurrences (~8.5), where the pH level decreased from water surface, and its vertical alteration trend; obeyed to that of the same for temperature and chlorophyll-a vertical structure, especially for dissolved oxygen parameter, where the maximum decrease was recorded coinciding with formation of oxycline layer. The level of water turbidity increased from offshore to inshore direction, but it decreased from water surface to depth for the Sea of Oman. But nutrient levels increased; at surface water layers from offshore to inshore, and from west to east, for the same body of water. In addition to that, concentration of nutrients in autumn (after monsoon); were more than that of, spring season (before monsoon), where; concentration of their vertical structure increase from water surface toward deeper sections.
    Keywords: Ecology ; Iran ; Oman Sea ; Physico-chemical ; Properties ; Water
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 103
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 174
    facet.materialart.
    Unknown
    Spat culture of black lip pearl oyster (Pinctada margaritifera) produced on Lengeh hatchery in Qeshm and Hendurabi Island (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25518 | 18721 | 2018-10-05 07:59:13 | 25518 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Dramatic depletion in number of black lip pearl oyster, Pinctada margaritifera in their natural beds despite almost two decades of catch prohibition, encouraged researchers of Iranian Fisheries Research Organization to find a scientific solution to restock the lost oysters. Following successful artificial propagation and producing spat, finding the sites that secure good growth and survival is very important. We tried to compare the growth and survival of oysters in two old natural beds, Michaeil and Hendourabi Island in the Northern part of Persian Gulf. After 14 weeks of settlement spat with an initial size of 16.85 ± 2.85 mm were randomly divided into 2 groups, in each group containing 600 individuals that were in triplicate. One group was transferred to Michaeil and Hendourabi and both groups were set at a depth of 10 m and kept for a year. Juvenile oysters at Michaeil sized 73.35 mm were almost 2 cm larger than at Hendourabi (P〈0.05) after a year of culture. Mortality rate was 20 % in Michaeil that was two times higher than at Hendourabi. Daily growth rate (DGR) showed similar trend during the culture period in both culture sites while it was faster in Michaeil. Maximum and minimum DGR were recorded in May and October in Michaeil with rate of 0.32 mm day-1 and in Feburary in Hendourabi Island with a rate of 0.01, respectively. Linear model was the best model for predicting the length of oyster over the time in both sites. Hinge length and thickness were both bigger in Michaeil, however, length was more stable to show the difference between two sites. More nutrients in Michaeil, that appeared to reduce visibility through the year (P〈0.05) may justify the results of faster growth rate in this site while more sediment on the shells of this area could be a reason of higher mortality rate. This research concludes that both sites are good for pearl oyster culture, however, using new culture methods and equipments that reduce the sedimentation rate on the shells give higher priority to the Michaeil.
    Keywords: Aquaculture ; Iran ; Persian Gulf ; Hendourabi island ; Qeshm island ; Pinctada margaritifera ; Michaeil ; Spat ; Growth rate ; Blak lip pearl oyster ; Culture ; Hatchery ; Fisheries ; Propagation ; Survival ; Mortality ; Nutrients ; Sediment
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 41
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 175
    facet.materialart.
    Unknown
    Population genetic study on Tenualosa Ilisha from Persian Gulf (Khouzestan region) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25524 | 18721 | 2018-10-05 08:38:24 | 25524 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Information on the genetic structure of fish populations is useful for identification of stocks, management for sustainable exploitation and preservation of genetic diversity. The most important objective in population genetics is discrimination between populations within their distribution areas. The invention of polymerase chain reaction has created new possibilities for exploration of these differences in fish populations. One of these PCRbased methods is Random Amplified Polymorphic DNA (RAPD) which uses short oligonucleotide primers of arbitrary sequences to amplify discrete regions of the genome. The most important features of this method are: obtaining a large number of polymorphic DNA bands using tiny amounts of DNA without necessity of cloning or previous knowledge of DNA sequence. Ilisha shad (Tenualosa ilisha) which is locally known as Soboor is an anadromous fish living in sea shores, estuaries and downstream of rivers and migrate to upstream for spawning. The aim of this research was to study genetic structure of soboor in Khuzestan waters, including Karoon, Arvadrood and Bahmashir rivers, Persian Gulf (Sea) as well as Iraqi samples (caught from Shat-Al-Arab river), by using RAPD technique. For this purpose, fifteen random decamer primers were initially applied on DNA samples of 4 individuals from each region. After optimizing PCR condition, nine primers with best results were selected from which 58 polymorphic loci were obtained on 60 specimens (12 specimens from each geographical region). RAPD data were obtained by scoring 1 and 0 for presence or absence of polymorphic bands, respectively. RAPDPLOT, RAPDDIST and POPGENE computer Software were used to analyze the RAPD data. Canonical discriminant analysis was deployed for statistical analysis of the data. Maximum and minimum genetic distances were found between samples from Iraq and Sea (0.2870) and Arvandrood and Bahmanshir (0.1042), respectively. The UPGMA dendrogram showed that the samples from Karoon and Sea form a clade whereas samples from Iraq, Arvandrood and Bahmanshir rivers form another clade suggesting the hypothesis that there are two Iranian and Iraqi populations of this species and these fish select their own specific river for spawning. According to this hypothesis the specimens from Sea would destine Karoon as their spawning river. On the other hand, two other separate groups could be corresponded to Tigris and Euphrate rivers in Iraq. Moreover, canonical discriminant analysis indicates that samples from four geographical regions are statistically different from each other and high correlation among data was found within each region (P〈0.01) suggesting that Tenualosa ilisha is a schooling species. According to the above two hypotheses and considering the distribution of specimens in phylogenetic tree it can be concluded that Bahmanshir river is a specific pathway for those fish heading Karoon river for spawning whereas Shat-Al-Arab population uses both Bahmanshir and Arvandrood rivers to reach Shat-Al-Arab. To verify these three hypotheses further studies are needed.
    Keywords: Biology ; Fisheries ; Iran ; Persian Gulf ; Khouzestan Province ; Karoon River ; Bahmanshir River ; Arvandrood River ; Population ; Genetic ; Tenualosa ilisha ; Population ; Polymerase Chain Reaction ; DNA ; RAPD ; PCR ; Spawning
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 87
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 176
    facet.materialart.
    Unknown
    Evaluation of photosynthetic products (phytoplankton) in the major estuaries of the southern Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25528 | 18721 | 2018-10-05 08:38:29 | 25528 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Due to various Physic and chemical factors of rivers leading to the sea, the situation seems different topography and throughput rate initial productions in the different seasons and due to various circumstances physical and chemical rivers leading to the sea, seabed topography in different situation appears to be of primary production in the eastern and western between the Caspian Sea in the season, may be altered.Identifying species and determining the distribution and biomass of the changes and how they are affected by environmental changes and we are environmentally conscious. We also compare the current situation with previous studies, we find that the number and types of plankton biomass have been what it is. During 1392 in spring, summer, autumn and winter, in a study of 8 transects of 40 stations. In each transect from Astara to the Turkmen. 5 stations at depths of 5. 10 and 20 m were selected for sampling. The total number of 182 species from seven branches Bacillariophyta, Pyrrophyta, Cyanophyta, Chlorophyta, Euglenophyta, Xantophyta and Chrysophyta phytoplankton were identified. Including 81 species of Bacillariophyta, 33 Cyanophyta, 25 Pyrrophyta, 31Chlorophyta , 9 Euglenophyta, 1 Xantophyta and Chrysophyta had 1 specie. Most of Bacillariophyta (61 species) was in Autumn and then in winter (48 species). Dominant species of Bacillariophyta were Pseudonitzschia seriata, Rhizosolenia fragilissima, Stephanodiscos sp. , Melosira varians, Nitzschia acicularis and Cyclotella menenghiniana Pyrrophyta was greatest diversity of branches in summer, autumn and winter (19 species), which includes Exuviaella cordata, Exuviaella marina, Prorocentrum praximum and Prorocentrum scutllum. In the autumn density of Cyanophyta was 285/7(± 137/1) cubic meters × 106 and biomass was 95( ± 54) mg per cubic meter) and 18 species were observed. The dominant species in this category were Oscillatoria sp., Nodularia spumigena and Oscillatoria agardhii. Most species of Chlorophyta branche in autumn and winter and summer median region with the highest density at the density of 26/2% and most of it is Binuclearia lauterbornii. Identified as the branches Euglenophyta were Trachelomonas, Euglena and Phacus that were observed in all seasons. In winter, the highest mean biomass was 9( ± 0/818) mg per cubic meter and the highest density of in summer was 0/5 ( ± 0/5) in cubic meters × 106. In winter the depth of 10 meters and surface of Babolsar, Amir Abad and Anzali, a kind of Chrysophyta and in surface of Tonekabon and Anzali a species of Xantophyta were observed that had negligible density and biomass. Studies have shown that density and biomass of Bacillariophyta were 228 (± 471) per cubic meter × 106) and 6157 ± ( 290) mg per cubic meter) respectivity and Pyrrophyta were 28/17( ± 27/14) cubic meter × 106in cubic meters) and 3349 ( ± 336) mg per cubic meter) and Cyanophyta 120/40 (± 123/87) per cubic meter × 106 per cubic meter), biomass (55 ± 57mg per cubic meter) were the branches of the dominant phytoplankton. Abundance and biomass in different seasons have been significant differences (p 〈0.05).
    Keywords: Ecology ; Iran ; Caspian Sea ; Astara ; Turkmen ; Anzali ; Babolsar ; Photosynthetic product ; Phytoplankton ; Species ; Biomass ; Plankton ; Sampling ; Bacillariophyta ; Pyrrophyta ; Cyanophyta ; Chlorophyta ; Euglenophyta ; Xantophyta ; Abundance
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 87
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 177
    facet.materialart.
    Unknown
    Investigation on abundance, distribution, diversity and biomass of macrobenthos in Oman sea waters (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25533 | 18721 | 2018-10-05 15:59:31 | 25533 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Oman sea is an important aquatic part of south-east part of iran that lies from 27°N(Hormoz strait) until 25° 45′N (Gwatar Gulf) that is next to two Southern Province ,Hormozgan ann Sistan-o- baloochestan. Sampling was carried out from march 2007 and 2008 to September 2007 and 2008 in two period of time postmonsoon and premonsoon . A total 24 station on 10 transect 4 stations were on each transect 1 and 2 with 10 miles far from each other and for the others 2 stations were on each transect. A 0.1 m^2 VAN – VEEN GRAB was used for sediment sampling and a CTD was used to record physical data of water column. Macrobenthos frequency data and biodiversity indices were used to determine of density and biodiversity of macrobenthos respectively. Wet weight was used to determine wet biomass of macronenthos. Among benthic invertebrate polychaete with average 800 ind^-2 and then amphipods and gastropods were the most abundance. Yearly density of macrobenthos showed polychaete with the average of 500 ind^-2 in 2007 and 1000 ind^-2 in 2009 was the most abundance. Macrobenthos density in postmonsoon was more than premonsoon p〈0.05. An increasing and decreasing in density and biodiversity was obtain from coast to depth respectively p〈0.05. There was no significant different between macrobenthos density from Hormoz strait to Golf of Guiter p〉0.05. There was a negative regression between macrobentos density and depth (p〈0.05) and positive rsgresion between macrobenthos and oxygen concentration and temperature (p〈0.05). There was also a significant relationship between macrobenthos, coppepda and polychaete density with organic carbon p〈0.05. Bimass changed from strait to Golf and coast to depth increasingly p〈0.05.
    Keywords: Ecology ; Macrobenthos ; Biodiversity ; Abundance ; Distribution ; Diversity ; Biomass ; Aquatic ; Sampling ; Biodiversity ; Polychaete
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 67
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 178
    facet.materialart.
    Unknown
    The fifth developing plan of Iranian Fisheries Research Institute (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25554 | 18721 | 2018-10-06 11:23:39 | 25554 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Accurate scientific and practical plan for achieving the goals of the Islamic Republic of Iran within the framework of Vision development 1404, is the infrastructure achieving sustainable development of the country. Order to achieve the above mentioned objectives and in order to the comprehensive development plans in the country, Iranian fisheries research organization adjust the fifth developing plan for support of executive related departments in country with mobilization a large number researchers consists of several working groups of ifro affiliated research centers. The fifth developing plan consist of three chapters for report of the forth developing plan and intrudction of research, construction plans and financial support (budjet) for period of 2011-2014 A.C.
    Keywords: Management ; Iran ; Fisheries ; Aquaculture ; IFRO ; Developing plans ; Fisheries research
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 144
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 179
    facet.materialart.
    Unknown
    Investigation on the potential use of aquatic plants for biomonitoring of the important aquatic ecosystems of the country-the first phase: Anzali wetland (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25586 | 18721 | 2018-10-07 10:38:28 | 25586 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This research project was conducted during 2007-2008 in Anzali wetland, aiming feasibility study on aquatic plants different species (emerged, sub emerged and floating leaved plants) as essential and non essential elements concentration Biological indicators utilization including Ni, B, Cd, Pb, Cu, Mo, Se, Si, Cl, Zn, Mn, Fe, Na, Mg and Ca. and their tolerance and capabilities assessment toward exposing different elements and study on water and sediments rational role in elements absorption and important environmental factors (DO, pH, etc…) effects on absorbed quantities. Azolla filiculoides, Hydrocotyle vulgaris, Ceratophyllum demersum,Trapa natans were the gathered aquatic plants field samples. Water and sediment samples were also collected from Shijan, Abkenar and Siahkeshim sampling sites respecting 1, 2 and 3 and were digested according to the standard methods. Element concentrations were determined using ICP-AES and AAS. Lab samples were Hydrocotyle , Lemna , Ceratophyllum and exposed to Ni, Zn, Cd, Pb, Cu and Ca in Swedish standard, (SIS), Lemna growth Medium 648, Hogland's E+Medium (22,23) implementation. The results shows a significant variation (p≤ 0/0001) among the plants, sampling sites and the elements which is compatible with previous similar projects results at national and international scales, rationally. Totally pattern of the elements occurrence in the plants would be: Cd 〈 Mo, Pb 〈Co 〈 Si, Ni 〈 Cu 〈 Cl 〈 B 〈 Zn 〈 Fe 〈 Mn, Ca 〈 Na. On concentrated metals in the plant tissues and their amounts in the waters There is no any clear proportion for Azolla and Ceratophyllum however there is for concentrated Ni, Cl and Zn in Hydrocotyle and the water samples and also Co, Cl, Cu, Mn for Trapa and the sampling site 3. There is positive harmony between existed elements in Hydrocotyle and 3 stations sediments and this is obvious for Fe, Na, Mg, Ca in Trapa and stations 1 and 3 stations. This trend in Azolla and the sediments is current for Ni, Mg and just Co in Ceratophyllum. Water temperature, Do and pH variation trends are the same and could be arrange in stations as 2〉1〉3 and this is 1〉2〉3 for hazy and no trend for TOM variations. The lab samples test results on metal concentration illustrates Hydrocotyle and Ceratophyllum similar trends for maximum Zn and minimum Pb absorbing. However, for Lemna the highest and least absorption rates belong to Ni and Cd. Density factor sequence in heavy metals exposed lab samples would be: Lemna 〉 Hydrocotyle 〉 Ceratophyllum.
    Keywords: Ecology ; Iran ; Anzali wetland ; Aquatic plants ; Essential and non essential elements ; Biomonitoring ; Environmental factors ; Azolla filiculoides ; Hydrocotyle vulgaris ; Ceratophyllum demersum ; Trapa natans ; ICP-AES ; AAS
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 90
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 180
    facet.materialart.
    Unknown
    Monitoring of algal bloom in coastal water of the Persian Gulf and Oman sea (Hormuzgan province) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25595 | 18721 | 2018-10-07 10:45:56 | 25595 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was carried to monitor the algal bloom in Hormozgan Province costal water in 2012. The purpose of this project is to examine the changes of phytoplankton, Zooplankton, and environmental factors in this area monthly. To achieve this goal, eight sampling stations were selected in Bandar Abbass coast and three stations were selected in both port Lengeh and Jask. Physicochemical parameters of water were measured with a CTD and the minimum and maximum values were obtain for these parameters contain temperatures between 19.5 ± 0.32 and 35.34 ± 0.2 (oC), salinity between 36.8 ± 0.05 and 39 ± 0.03(p s u), dissolved oxygen between 4.75 ± 0.14 and 6.8 ± 0.2 (mg / l), pH between 7.9 ± 0.05 and 8.8 ± 0.09, chlorophyll a between 0.29 ± 0.13 and 2.97 ± 0.13 (mg/m^3). In this study 3 branches, 5 classes, 14 orders, 24 families and 42 genera of phytoplankton (including 26 genera of group Bacillariophyceae, 14 genera of group Dinophyceae and 2 genera of group Cyanophyceae) as well as 14 groups of Zooplankton populations were identified. The results of the study of phytoplankton in coastal waters of the Hormozgan province showed that in all months (with some exceptions, regardless of the dominant group have dinoflagellate) diatoms constitute the highest frequency of the dominant group. In the spring, Gymnodinium with 90% ,in summer Chaetoceros and Oscillatoria, each with a 40%, in fall Leptocylindrus and Rhizosolenia each with 71%and 26% and 33% in winter Leptocylindrus the dominant species in coastal waters of Bandar Abbas. In Port Lengeh and r Jask coastal waters Guinardia with 30% and Leptocylindrus with 39% in the Spring Nitzschia, with 69% and Rhizosolenia with 49% in the Summer, Rhizosolenia, with 57% and Gymnodinium 30% in the Autumn, and Leptocylindrus with 40% and 59% in the Winter were the dominant species in these areas.There was a significant correlation n between physicochemical parameters and total abundance of phytoplankton in all area (p〈0.5). The results showed that the seasonal variation and the percent of zooplankton were, Nauplius, 49% and Calanoida, 21% in Spring, Nauplius, 41% and Tintinnida, 28% in Summer, Nauplius 49% and Cyclopoida, 20% in Autumn and Tintinnida, 31% and Cyclopoida, 26% in Winter in Hormozgan province Coasts, in other words, the maximum percentage was belong to the crustacean group.
    Keywords: Ecology ; Iran ; Persian Gulf ; Oman Sea ; Hormozgan province ; Monitoring of algal bloom ; Monitoring ; Bloom ; Phytoplankton ; Zooplankton
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 64
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 181
    facet.materialart.
    Unknown
    Study of artificial production meat possibility in reared beluga (H. huso) with different diets (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25588 | 18721 | 2018-10-07 11:29:26 | 25588 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Four experiments were conducted to study of production meat in reared beluga (Huso huso) with different diets. In the first experiment, A 19-week feeding trial was conducted to evaluate dehulled soybean meal (DHSM) as a fish meal (FM) replacer in juvenile beluga, of initial body weight 8.25±0.08 g (mean±SD) in triplicate groups, fed six isoenergetic (20.1 mJ kg^-1) and isoproteic (45% crude protein) diets, resulting in 5%, 10%, 15%, 20% and 25% of fish meal protein being replaced by soybean protein. Growth performance was reduced significantly with the increasing of DHSM in the diets in the present study. In the next stage, triplicate groups of 315 fish averaging 300.25 ± 10.28 g (mean ± SD) were fed one of seven experimental diets for 14 weeks. Weight gain (WG), specific growth rate (SGR), feed effeciency (FE), protein efficiency of retio (PER) of fish fed 5%, 10% and 15% of soybean protein diets were significantly higher than those of fish fed 20%, 25% and 30% diets. Whole body protein, lipid, moisture content were unaffected among different treatments (P 〉 0.05). In the second experiment, A 2 × 4 factorial design was used to evaluate the dietary lysine and to determine the optimum dietary L-carnitine in sub-yearling beluga, reared in the indoor system. Twelve experimental diets were formulated and prepared to contain four lysine levels (0.75, 1.5, 2.25 and 4% diet) and two L-carnitine levels (300 and 600 mg/kg diet) at each lysine level. Fish averaging 23 ± 0.5 (mean±SD) were fed one of the experimental diets for 10 weeks. At the end of the experimental period, there were significant lysine and Lcarnitine effects (P 〈0.05) on growth performance and feed conversation ratio (FCR). These results may indicate that, weight gain (WG), FCR and protein efficiency ratio (PER) in fish fed diet containing 3% lysine and 600 mg L-carnitine/kg diet were significantly higher than those of fish fed control diet (P 〈 0.05). There were no significan dietary lysine and L-carnitine effects on glucose, cholesterol and haemoglobin (Hb) concentration, of fish fed different levels of lysine with 300 mg L-carnitine/kg diet, however, Hb concentration in fish fed diet containing 2.25% lysine and 600 mg L-carnitine/kg diet were significantly higher than those of fish fed control diet (P 〈 0.05). These results may indicate that the optimum lysine and the L-carnitine levels could be 2.25-3% and 600 mg L-carnitine, respectively in begga (8-300 4g), based on growth performance, feed utilization and hematological parameters. In the thired experiment, a study was conducted to evaluate the effects of dietary betafine and metionine interaction on the growth, feed efficiency, carcass composition and hematological index in juvenile beluga. Thirteen diets were formulated to contain four dietary metionine levels (0.5, 1, 1.5 and 2%), betafine (0.5, 1, 1.5 and 2%) with equal ratio of metionine and betafine (0.5: 0.5, 1: 1, 1.5: 1.5 and 2: 2% diet) were fed to juvenile beluga (23± 0.5 g) in triplicate groups for 12 weeks in a indoor system. The results showed that no significant (P〉 0.05) differences were found in growth performance and feed utilization among the dietary betafine and metionine concentrations in beluga. Hb concentration of fish fed control, 1 and 1.5% metionine were significantly higher than those of fish fed the other diets. FCR of fish was significantly improved by dietary metionine and betafine. FCR was lower (P 〈 0.05) in fish fed equal ratio of metionine and betafine (2: 2) diets than those in fish fed control diet. Based on above results, it is recommended that the diet for juvenile beluga, Huso huso (8-300g), should contain equal ratio of metionine and betafine (1.5: 1.5) diet, corresponding to 5.95 g/100 g of dietary protein for optimum growth, efficient feed utilization and whole-body protein content. A 17-week feeding trial was carried out to evaluate the effects of dietary L-carnitine level in beluga, Huso huso. A total of fish averaging 1247 ± 15.6 g (mean ± SD) were randomly distributed into 18 fibreglass tanks, and each tank holding 10 fish was then randomly assigned to one of three replicates of six diets with 50, 150, 350, 650, 950 and 1250 mg L-carnitine kg-1 diet. At the end of 17 weeks of feeding trial, average weight gain (WG), feed efficiency (FE), protein efficiency ratio (PER) and condition factor (CF) of fish fed 350 mg kg^-1 diet were significantly (P 〈 0.05) higher than those of fish fed 50, 150, 950 and 1250 mg kg-1 diets. WG, FE, PER and CF of beluga fed 650 mg kg^-1 diet were also significantly higher than those of fish fed 50, 950 and 1250 mg kg^-1 diets. Whole body and muscle protein were significantly improved by the elevation of dietary L-carnitine level up to 350 mg kg^-1. Liver superoxide dismutase and glutathione peroxidase activities of fish fed 350 and 650 mg kg^ -1 diets were significantly higher than those of fish fed 50, 950 and 1250 mg kg^-1 diets. The dietary Lcarnitine level of 350–650 mg kg^-1 diet could improve growth performance, feed utilization, protein-sparing effects of lipid, antioxidant defence system and reproductive success. Polynomial regression of WG suggested that the optimum dietary L-carnitine level was 480 mg kg^-1 diet. Therefore, these results may indicate that the optimum dietary L-carnitine could be higher than 350 but 〈650 mg kg^-1 diet in beluga reared in intensive culture conditions.
    Keywords: Fisheries ; Iran ; Artificial production ; Meat ; Beluga ; Huso huso ; Diet
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 110
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 182
    facet.materialart.
    Unknown
    Research and developing a model of innovation systems in fisheries and aquaculture industry (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25592 | 18721 | 2018-10-07 10:49:12 | 25592 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The "fisheries and aquaculture industry innovation system" is one of the subsystems of Agricultural innovation system (AIS), also has many characteristics of that system .Since this section contains most of the components and AIS institutions, it can be examined as a part of the national innovation system. Due to the structure of the innovation system in the fishery system, a set of functions and institutions of this system are most important .It is therefore important that the system be analyzed and by reviewing the existing state institutions and functions of this system, the main problems and challenges identified. Understanding of the institutions and functions of fishery innovation system and analyze its problems and provide an improved model for fishery innovation system, is most activity in shaping major policy innovation in fishery sector. This step is very important to conduct innovative activities in the fishery sector. In this study, using a system perspective, the current status of the various factors affecting fishery development was assessed and the main drivers and challenges and solutions to improve the detection and analysis was provided. The results show that during the past eighty years, a number of research centers and educational institutions in the public sector have been developed .but this system, despite having considerable institutional capacity, is still in the middle stages of institutional development. In these years, the policy approach was linear, not system approach, so little attention has been to the development of science and technology intermediary institutions, coordinator organizations, venture capital funds, and the institutions of technology transfer, particularly in the public sector.
    Keywords: Aquaculture ; Iran ; Fisheries ; Aquaculture ; Agricultural innovation system ; AIS
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 112
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 183
    facet.materialart.
    Unknown
    Isolation, identification and antimicrobial evaluation of marine actinomycetes from Oman sea sediments (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25842 | 18721 | 2018-10-13 10:41:14 | 25842 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Actinomycetes are gram positive and filamentous bacteria and produce major portion of the bioactive compounds hence play an integral role in the novel drugs development. Recent studies demonstrated that marine habitats inhabiting actinomycetes have unique biodiversity and metabolic activity. For the first time Oman Sea sediments were investigated as a source of antibiotic producing marine actinomycetes in this project. Approximately 84 isolates were obtained from 14 collected sediment samples. Among four culture media and two treatments, Glucose asparagine agar and heat treatment isolated 32 and 47 isolates respectively and exhibited highest efficiency. Evaluation of antimicrobial activity of the isolated actinomycetes by top layer agar revealed that 24, 12, 23 percent of isolates showed antimicrobial activity against S.aureus, E.coli and C.albicans respectively. Determination of Minimum inhibitory concentrations of extracted antibiotics were recorded as 128256, 128-512 and 62-128 µg/ml against S.aureus, E.coli and C.albicans respectively. Preliminary identification studies showed that the potent isolates exhibited typical morphology of Streptomyces genus predominantly. Result of Morphological, biochemical and chemotaxonomical identification revealed that IFSIRI 70 ، IFSIRI 137 ، IFSIRI 145، IFSIRI 193،IFSIRI 214 belonged to Streptomyces genus. Molecular identification by 16s rRNA gene analysis showed high similarity (99%) between IFSIRI 70 ، IFSIRI 137 ، IFSIRI 145، IFSIRI 193،IFSIRI 214 strains with S. chartreusis، S. qinglanensis، S. Cacaoi، S. violaceoruber and S. diastaticus respectively. Phylogenetic analysis showed that isolated producer strains and some commercial antibiotic strains located in a common cluster. These results exhibited high antimicrobial potential of the potent actinomycetes isolates for new antibiotic discovery.
    Keywords: Ecology ; Health ; Iran ; Oman Sea ; Marine actinomycetes ; Antimicrobial activity ; Sediments ; Phylogenetic analysis ; Filamentous bacteria ; E.coli ; C.albicans ; S.aureus
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 69
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 184
    facet.materialart.
    Unknown
    Hydrobiological studies on selected creeks in east Hormozgan for shrimp culture pond purpose (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25223 | 18721 | 2018-09-06 05:59:09 | 25223 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The coastal ecosystem, which represents the boundary in between pelagic province and land, is a complex one. Since most probes of physico-chemical characteristic in coastal ecosystem are unstable, it affects the distribution and abundance of the biota in it. The aim of this project was to determine Hydro-biological studies on the important creeks of East Hormozgan for shrimp culture pond purpose. Three creeks was selected on east coast namely as (Azini, Jask and Khalasi) and three stations in every creek which situated at the mouth, middle and end of the creek. The work in the project is incorporated in living and nonliving characteristics; the sampling period was in four seasons of 1384. Water characteristic like temperature, pH, dissolved oxygen, biochemical oxygen demand (B.O.D), salinity, carbon dioxide(Co2), nitrate, nitrite, ammonia, phosphate, silicate, total dissolved solid (T.D.S), total suspended particle,(T.S.S) and hydrogen sulphide (H2s). The recorded mean of these parameters in Azini creek (25.5±1.05 c), (8.11±0.13), (7.21±0.82 mg/l), (2.3±0.73 mg/l), (38.07± 0.86 ppt), (12.4±1.8 mg/l), (3.12±2.8 μg/l), (0.27±0.19 μg/l), (1.39±0.99 μg/l), (0.27±0.22 μg/l),(9.78±5.36 μg/l), (28.2±2.1 g/l), (37.6±11 mg/l),(0.1±0.07 mg/l), Jask creek (27.5±1.1 c ), (7.96±0.33), (6.79±0.77 mg/l), (2.9±0.96 mg/l), (38.77± 1.68 ppt), (10.8±3.4 mg/l), (3.51±2.2μg/l), (0.2±0.15 μg/l), (2.13±1.48 μg/l), (0.55±0.42 μg/l), (13±6.3 μg/l), (38.8±1.9 g/l), (37.1±13 mg/l),(0.32±0.28 mg/l), and Khalasi creek (28.2±1.9 c), (8.04±0.16), (6.9±0.48 mg/l), (2.22±1.03 mg/l), (38.79± 1.46 ppt), (12 ±1.1 mg/l), (3.08±1.4 μg/l), (0.2±0.14 μg/l), (1.41±0.65 μg/l), (0.45±0.39 μg/l), (13.3±4.2 μg/l), (38±3.5 g/l), (35.3±9 mg/l),(0.08±0.04 mg/l), respectively. The range of Total Organic Matter and Total Phosphor of sediment in Azini creek recorded as (4.99-10.57), (0.4-1.73), Jask creek (2.57-5.89), (0.0-1.99) and Khalasi creek (5.23-6.89), (0.59-1.09) respectively. Comparison of concentration mean between three creek shows there was significant difference between Temperature , pH, Dissolved Oxygen, Salinity, free Carbon dioxide, Silicate, Phytoplankton and Zooplankton (P〈0.05. Phytoplankton with (31 genera from 3 families),(34genera from 4 families) and (38 genera from 3 families) were recorded in Azini, Jask and Khalasi creeks respectively. Zooplankton with 12, 12, and 10 group was present in Azini, Jask and Khalasi creeks. Macrofauna with (54 species from 38 families and 20 Order), (35species from 25 families and 17 Order) and (51 149 species from 39 families and 20 Order) were recorded from Azini, Jask and Khalasi creeks respectively. Minimum and Maximum density of phytoplankton in Azini, Jask and Khalasi creeks were (63-22914), (68-94320) and (280-5523) in liter, Zooplankton (193048-226337), (36750-713753) and (32625-489532) in m^3 and Macrofauna (6400-11357), (8375-24800), and (900-12473) in m^2, Total Count (90-3400), (70-22150), and (0-2250) in one gram sediment and Total Vibrio (43-2400), (15-2400) and (25-460) in one gram sediment respectively.
    Keywords: Ecology ; Iran ; Hormozgan province ; Hydrobiology ; Creek ; Shrimp ; Culture Pond ; Ecosystem ; Abundance ; Temperature ; pH ; Dissolved oxygen ; Biochemical oxygen ; Salinity ; Nitrate ; Nitrite ; Ammonia ; Phytoplankton ; Zooplankton ; Macrofauna ; Sediment
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 155
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 185
    facet.materialart.
    Unknown
    Marking Persian sturgeon (Acipenser persicus) using new method and tracking them under 10 m depth in the sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25240 | 18721 | 2018-09-06 06:10:05 | 25240 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The second phase of the project entitled Marking Persian sturgeon (Acipenser persicus) using new method and tracking them under 10 m depth in the sea was approved in 2004. This project which terminated in April 2009 was carried out during 2004 to 2008 to track coded wire tagged (CWT) sturgeons under 10 m depth. Among the specimens caught, three were juvenile Persian sturgeon tagged in the first phase (2003) were caught in the second phase (2004). The data related to tagging & capture of sturgeon from 2003 to 2008 is included. Totally, 426325 specimens of Persian sturgeon were tagged in 3 weight classes (〉3g, 3 to 5g and 6 to 10g). Among the population studied, 101500 of them belonged to specimens of 2003 which were tagged by three hatcheries; Shahid Beheshti, Shahid Rajaee & Shahid Marjani and then released into the rivers (Sefidrud, Tajan & Gorganrud) entering the Caspian Sea. During 2004 to 2008, 324825 specimens were tagged in Shahid Beheshti hatchery and released into the Sefidrud River. Gill net were used to catch the tagged Persian sturgeon specimens under 10m depth. During 2003 to 2008, 3616 Persian sturgeon were captured of which 43 juveniles bore CWT. Among the captured CWT sturgeons, 23 specimens belonged to the 6-10 g weight class, 19 specimens belonged to the 3 to 5g weight class and one sturgeon was 〉3g. Based on the results, it can be concluded that higher weight at releasing time can lead to higher survival rate and fisheries returns. Some other factors that influence catch rate of CWT sturgeons are as follows: Catch station (highest catch rates in Persian sturgeon juveniles belonged to Chaboksar station), catch season (highest catch rates were recorded in summer which can be attributed to the release of juveniles), catch depth (in winter highest catch occurred at 5 to 10m depth, in other seasons highest catch number was recorded at 3 to 5m depth. Decrease in water temperature is the reason for higher catch numbers at 5 to 10m depth in winter. Also, mesh size can effect on catch rate (highest catch rate belongs to nets with 22mm mesh size). Statistical analysis of results showed significant difference (p〈0.05) among the various groups studied. Existence of illegal catch nets in the river can also cause mortality of the released juveniles.
    Keywords: Biology ; Ecology ; Iran ; Caspian Sea ; SefidRud River ; Tajan River ; Gorganrud River ; Tagging ; CWT ; Persian sturgeon ; Juvenile ; Releasing ; Acipenser persicus ; Specimens ; Population ; Mortality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 76
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 186
    facet.materialart.
    Unknown
    Biomass estimation of demersal resources in the Persian Gulf and Oman Sea by Swept Area Method (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25242 | 18721 | 2018-09-07 07:17:16 | 25242 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Regarding to monitor of demersal resources in the Persian Gulf and Oman Sea, and also biomass and CPUA estimation of them, a series of research cruises (5 cruises per year) were carried out by R/V Ferdows-1covering the area from 49 00 E in the west (Khoozestan provice) to 61 25 E in the east (Gwater) in a 5 years program form 2004 up to 2008 (no cruise in 2006). The study area was stratified into 17 strata (A to Q) of which 10 starta (A to J) were in the Persian Gulf and 7 strata (K to Q) were in the Oman Sea, covering the depths of 10-50m in the Persian Gulf and 10-100m in the Oman Sea. A total of 316 stations were randomly selected. The biomass and CPUA were estimated by Swept Area method. The comparison between two regions indicated that the percentage of density of demersal fishes in the Persian Gulf during years 2004, 2005, 2007 and 2008 were 3.3, 3.9, 2.3 and 2.4 times more than the Oman Sea and totally 70-80% of total biomass was calculated for the Persian Gulf. Also a comparison among 17 starta, the highest biomass was found for starta C & D in the Bushehr province waters. The amount of CPUA for both regions of the Persian Gulf and Oman Sea was compared and it was concluded that in years 2004 and 2005, the mean CPUA in the Persian Gulf was partially higher than the Oman Sea with 1.06 & 1.20 times more; and on the contrary for the next two years this value was higher in the Oman Sea with 1.3 times more. The highest CPUA of demersal resources for the Oman Sea belonged to the strata K & O for years 2004, 2007 and 2008 and for year 2005 was for L and strata. It can be concluded that the north-west of Oman Sea has the best condition of biomass of commercial and non-commercial species and the O stratum will be in the second ranking. With review the mean CPUA in different depth-layers for years 2004, 2005, 2007 and 2008, it was concluded that with increasing the depth, the mean CPUA is decreased in which the CPUA values in depth-layer 10-20m for these years were 8.3, 3.0, 2.1 & 1.6 times more than depth-layer 50-100m. The comparison of mean CPUA for 10 strata of the Persian Gulf showed that in years 2004 and 2005, the mean CPUA of demersal fishes in the Hormuzgan province waters was higher than in Bushehr province waters (1.2 times more). In total, the highest maen CPUA belonged to F (Naiband to Mogham) and G (Mogham to Farour) in Hormuzgan waters. On the contrary, in years 2007 and 2008 this value in Bushehr waters was 1.3 times higher than western part of Hormuzgan waters with the highest value in D stratum(Boordekhoon to Dayyer). Also the comparison of mean CPUA for different depth-layers, it was found that the mean CPUA has ascending trend with increasing the depth, with the highest value in depth-laer of 30-50m in which contains the 55-68% of total biomass. The lowest biomass is found in depth-layers of 10-30m. Totally, the minimum CPUA and biomass for both commercial and non-commercial species belonged to a stratum located in Khouzestan province waters and it was shown the over-exploitation of resources in this area. The comparison between commercial and non-commercial groups in both ecosystems , it was concluded that the density of commercial species was higher than non-commercial ones , and in all years the Persian Gulf indicated higher values than the Oman Sea.
    Keywords: Biology ; Fisheries ; Iran ; Persian Gulf ; Oman Sea ; Khouzestan province ; Bushehr province ; Hormuzgan province ; Biomass ; Demersal resources ; Swept Area Method ; Density ; Fishes ; CPUA ; Species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 363
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 187
    facet.materialart.
    Unknown
    Special Issue: The 2th National Conference on Ornamental Fish, 2018 (2021)
    Iranian Fisheries Science Research Institute
    In:  http://aquaticcommons.org/id/eprint/26072 | 18721 | 2018-10-23 17:01:25 | 26072 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 45
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 188
    facet.materialart.
    Unknown
    Survey of handling and freezing storage effects on quality of Aras dam's fresh water crayfish meat (Astacus leptodactylus) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25653 | 18721 | 2018-10-08 08:21:44 | 25653 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Sampling for this study was carried out at the freshwater crayfish fishing season (May to December ) from the selected packs made from one of the harvesting centers at the first day ( harvesting and packing ) until the seventh day ( the export time ) using registered number to determine the handling effect ( live ) and changes in chemical and microbial indices in tail fillet stored at -18 ° C at days 1 and every 15 days considering 1 treatment and 3 replicates. The comparison of results mean (±SE) of the effects of handling on tested indices showed a significant reduction of protein percentage (dry weight) of tail filet at day 7 (13/85 ± 0/07) comparing with fishing day (16/1 ± 0/05) ( (p 〈 0.05). So that by increasing the handling and storage period, the amount of protein (dry weight) was reduced. Comparison of carbohydrate percent (dry weight) during handling showed a significant difference between the first day (2/8 ± 0/009) with the seventh day (0/9 ± 0/005 (p 〈0.05). Percent of moisture showed a significant increase during handling between day 1 (79/2 ± 0/24) and 7 (84 ± 0.41) (p 〈 0.05). Mean chemical composition of haemolymph showed a significant reduction in triglycerides (milligrams per deciliter) at fishing day (14/3 ± 0/16) and day 7 (11/7 ± 0/13) (p 〈 0.05). Comparison the means of saturated and unsaturated fatty acid profiles and the ratio of DHA / EPA did not show significant differences (p〉0.05). Comparison of the mean (±SE) of total bacterial count (log CFU / g) and psychrophilic bacteria at different periods of tail fillet storage at - 18 °C showed significant differences at day1 ( 3.48 ± 0.00 and 1.0± 0.00) compared to day 180 ( 6.86± 0.85 and 6.75± 0.25) , respectively(p〉0.05) .Comparison of Mean (±SE) of chemical indices for first day with day 180 were thiobarbituric acid ( mg malondialdehyde /kg ) (0.19/0 ± 0/07) and (1/45 ± 0/25), peroxide ( meq oxygen/ kg fat ) (0/81 ± 0/21) and (2/2 ± 0/3), total volatile basic nitrogen ( mg per 100 g fillet ) (13/21 ± 1/01) and (26/6 ± 1 / 40) and acidity (6/26 ± 0/08) and (6/55 ± 0/05), respectively which showed significant differences with each other (p 〈 0.05). Therefore, cited to the results of microbiological and chemical parameters, maximum shelf life longetivity of freshwater crayfish tail fillets packaged in the air is recommended as 5 months after freezing at – 18 °C.
    Keywords: Fisheries ; Iran ; Aras dam ; Handling ; A.leptodactylus ; Quality ; Freezing ; Fillet ; Spoilage ; Survey ; Fresh water ; Crayfish ; Astacus leptodactylus ; Protein
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 46
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 189
    facet.materialart.
    Unknown
    Study on biotic and abiotic parameters to determine water quality of Rajaei Dam (Mazandaran province- Sari) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25655 | 18721 | 2018-10-14 02:43:22 | 25655 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The The Shahid Rajaei Reservoir- Sari is an important and large reservoir in Iran. The major objectives of dam instruction are flood control, irrigation purposes, and electricity power. However the dam is going to supply drinking water for the people. In order to prevent threats of unsuitable water to human health risks and economic losses, it is necessary to monitor the water quality before offering it to people. In this study, some of the physicochemical parameters and Chlorophyl- a, phytoplankton, microb and fungi of Shahid Rajaei reservoir were measured at 4 stations (Shirin Roud branch, Sefid Roud branch, the crossing point of branches, near the tower) during six sampling months (June, July, August, September, November and February) in 2012-2013. In order to water quality classification, the water quality index, trophic status, Shanoon and saproby indices of reservoir calculated and the results compared to different criteria and standards. The results showed that the mean (±Standard Error) of temperature, dissolved oxygen, pH, phosohate, amonium and nitrate concentrations and Chlorophyl a were 21.35 (±1.30)ºC, 10.48 (±0.37), 8.54 (±0.04), 0.050 (±0.004), 0.036 (±0.004), 0.75 (±0.03) mg/l and 18.00 (±7.23) mg/m^3, respectively. In the present study, temperature between surface and deep layer was stratified in June and July, which the stratification was registerd 0.47 and 0.69 °C decreases with increasing of each meter depth in 15 to 30 meter culumn. But, these changes for each increasing meter of water depth were 0.2 to 0.26 °C in August and September, respectively, and finally was close to zero in November. In the warm months (July, August and September) with the formation of thermal stratification in the reservoir was formed oxygen stratification, but in the cold season (November and February), with vertical mixing of water oxygen and percent saturation of the reservoir was nearly homogeneous. TSI showed the maximum and minimum values at stations 4 (oligotrophic condition) and 2 (mesotrophic condition), respectively. The maximum and minimum monthly values of TSI obtained in July, August (eutrophic level) and September, February (oligotrophic level) respectively. Based on the Water Quality Index (WQI), the reservoir was in the “good” quality in whole months, .This class shows that the reservoir is suitable as source of drinking water through routine treatment of drinking water and the quality of water is rarely is low. Meanwhile the water is suitable for swimming and water recreation and survives of .sensitive fish and other aquatic species. Based on the results, 107 phytoplankton species were identified during the period of study. The species were classified in 8 divisions. Maximum and minimum values of mean (SE) abundance observed in July and January, 661 (±286) and 10 (±2) million cells/m^3 respectively at the surface layer. The One way analysis of abundance and biomass data showed temporal significant variances (P〈 0/05), however the spatial variances of data were not significant (P〉 0/05). Bacillariophyta and Pyrrophyta formed more than 95% of phytoplankton. 3 dominant species namely, Cyclotella meneghiniana, Goniaulax polyedra and Ceratium hirundinella formed about 70% of phytoplankton aboundance. Comparison of diversity indices (Shannon and Evenness) showed higher values in May and January; however the indices reached its lowest level (0.58 and 0.16) in August. Water quality assessment using Shannon index showed the lowest quality of water (moderately to high polluted) in July and August. This index demonstrated the highest water quality (slightly polluted) at station 1 and 4 respectively. The results of the water quality assessment using Saproby index (based on the resistant phytoplankton species to organic pollution) also indicated to organic pollution of water in the months of summer. The saproby assessment in stations categorized most of the stations in “moderately polluted” class of organic pollution except at station 4 which was in "slightly polluted" class. In conclusion, the removal (transfer) place and time of water to the water treatment plants.are impratnt because of temporal and spatial variation of water quality due to changes of phytoplankton structure in Shahid Rajaee Reservoir. Meanwhile, the survey showed that physico-chemical parameters alone did not reflect the actual conditions of aquatic water bodies. Monitoring of aquatic ecosystems must be complemented by biological monitoring. Microbial survey showed that the maximum and minimum geometric mean of the total number of bacteria, in September (6101559 CFU/100ml) and February (3310 CFU/100ml) respectively. However in stations, the maximum and minimum count of this parameter obtained at stations 2 (455316 CFU/100ml) and 3 (40964 CFU/100ml) respectively. There were no viable count of total coliform in the months of May and June. However it’s counting reach to the maximum value in September. Clostridium perfrigens showed viable count in water sample during September. The results also showed no proportion of fecal streptococci in microbe account in the Shahid Rajaei Reservoir. It might be good sign of suitable water quality in term of no-contamination by old and resistant fecal microbes. Base on the total coliform count, water quality was suitable for swimming and source of drinking water in most stations and months. The coliform count increased in August and September in stations 3 and 4. In these 2 months the probability of new fecal contamination increased by warm blood animals in the reservoir. It seems that the environment in September is suitable for accession of old and resistant microbes such as Clostridium perfrigens. The results of sample analysis revealed that the fungal colony counts in the station 4 and 5 were significantly higher than those the other stations. Moreover, the minimum and maximum of the fungal colony counts wereobserved in August and February, respectively. The most commonly isolated genera were Aspergillus, yeasts (especially candida) Penicillium, Cladosporium, Mucor, Fusarium, Althernariya, sterile hyafe and Paecilomyces respectively. Finally, in order to prevent of occurrence of eutrophication, algal bloom, and control of microbial activities and organic phosphorus loading it is necessary to control the activities of the human societies around the dam or the rivers tributary.
    Keywords: Ecology ; Iran ; Mazandaran Province ; Sari ; Shahid Rajaei Reservoir ; Water Quality ; Trophic State ; Biotic ; Abiotic ; Chlorophyll-a ; Phytoplankton ; Microbe ; Fungi ; Temperature ; Dissolved oxygen ; pH ; Aquatic ; Species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 76
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 190
    facet.materialart.
    Unknown
    Water quality based on the species composition and abundance of phytoplankton in Shahid Rajaei Dam- MazandaranProvince (Sari) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25662 | 18721 | 2018-10-08 08:29:33 | 25662 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Shahid Rajaee Dam was constructed on Tajan River (basin of the Caspian Sea) and it is two arch typed. The major objectives of dam instruction are flood control, irrigation purposes, and electricity power. However the dam is going to supply drinking water for the people. In order to prevent threats of unsuitable water to human health risks and economic losses, it is necessary to monitor the water quality before offering it to people. Many of algal blooms happening in Dams indicate that microbial evaluation is necessary but it is not sufficient.in water quality assessmens. Therefore in order for comprehensive evaluation of water quality, phytoplankton structure and population studied in the reservoir, then some water quality indices calculated based on the obtained information. Seasonal sampling was carried out in the year of 2012. However in summer monthly sampling was performed due to the increasing of algal blooms probability. Water samples were collected in 4 stations which were located entrances of Shirin Rood and Sefid Rood to the lake of dam, Cross of the two entrances and near the crest respectively. Based on the results, 107 phytoplankton species were identified during the period of study. The species were classified in 8 divisions namely Bacillariophyta, Pyrrophyta, Cyanophyta, Chlorophyta, Euglenophyta, Chrysophyta, Xantophyta and Cryptophyta. The numbers of species were 27, 22, 17, 26, 10, 3, 1 and 1 respectively in each phylum. Maximum and minimum values of mean (SE) abundance observed in July and January, 661 (±286) and 10 (±2) million cells/m^3 respectively at the surface layer. The values for biomass were 9264(±3242) and 103(±15) mg/m^3 which were recorded at the same months. The One way analysis of abundance and biomass data showed temporal significant variances (P〈 0/05), however the spatial variances of data were not significant (P〉 0/05). Bacillariophyta and Pyrrophyta formed more than 95% of phytoplankton abundance and biomass. Abundance percentage of Bacillariophyta was slightly higher than Pyrrophyta While biomass percentage of Pyrrophyta was about 3 fold of the Bacillariophyta. 3 dominant species namely, Cyclotella meneghiniana, Goniaulax polyedra and Ceratium hirundinella formed about 70% of phytoplankton aboundance. Comparison of diversity indices (Shannon and Evenness) showed higher values in May and January; however the indices reached its lowest level (0.58 and 0.16) in August. Water quality assessment using Shannon index showed the lowest quality of water (moderately to high polluted) in July and August. This index demonstrated the highest water quality (slightly polluted) at station 1 and 4 respectively. The results of the water quality assessment using Saproby index (based on the resistant phytoplankton species to organic pollution) also indicated to organic pollution of water in the months of summer. The saproby assessment in stations categorized most of the stations in “moderately polluted” class of organic pollution except at station 4 which was in "slightly polluted" class. In conclusion, the removal (transfer) place and time of water to the water treatment plants.are impratnt because of temporal and spatial variation of water quality due to changes of phytoplankton structure in Shahid Rajaee Reservoir.
    Keywords: Ecology ; Iran ; Mazandaran Province ; Sari ; Tajan River ; Shahid Rajaee Reservoir ; Water quality ; Pollution ; Phytoplankton ; Species ; Abundance ; Phytoplankton ; Algal bloom ; Microbial evaluation ; Population ; Sampling ; Bacillariophyta ; Pyrrophyta ; Cyanophyta ; Chlorophyta ; Euglenophyta ; Chrysophyta ; Xantophyta ; Cryptophyta
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 72
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 191
    facet.materialart.
    Unknown
    A study on some biological aspects of longnose trevally (Carangoides chrysophrys) in Hormozgan waters (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25668 | 18721 | 2018-10-14 03:05:49 | 25668 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Aspects of the biological features such as age and growth, the reproductive cycle , food and feeding of the Longnose Trevally (Carangoides chrysophrys) were studied from a total 376 specimens collected by use of trawl fishing in Hormuzgan waters between February 2014 and February 2015. The minimum and maximum total length during different months were between 25.5 and 80 cm respectively. Weight-length relationship for Longnose Trevally was W= 0/0064L 2/9004. This fish had an isometric growth. Fishes aged using sections of their otoliths. The equation of growth for Longnose Trevally obtained Lt=85(1-e-0/266(t+1/443)). Total mortality rate for Longnose Trevally was 0.412. LM50 and TM50 for Longnose Trevally was 46 cm, 2 years. Sex ratio(femail : male) for Longnose Trevally was 1/42:1. Maximum absolute and relative fecundity for Longnose Trevally were 479992 and 354 respectively. The highest GSI in April (2.86) and the lowest was in June 2014 (0.43). It has a long spawning season from January to May and spawning peak was observed in May. Longnose Trevally was Relatively low feed (CV= 65.49). Main food for Longnose Trevally were bony fish (Fp= 91.67). Random diet of Longnose Trevally were crustaceans (Fp=4.17) (shrimp, crab and squilla) and mollusks (Fp=4.17) (cutlle fish, Squid), respectively.
    Keywords: Biology ; Fisheries ; Iran ; Hormuzgan ; Hormozgan waters ; Longnose Trevally ; Parameters ; Growth ; Spawning ; Season ; Length ; Mature ; Fecundity ; Feeding ; Sex raio ; Carangoides chrysophrys ; Biological
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 68
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 192
    facet.materialart.
    Unknown
    Study of reproductive cycles and fecundity in a local population of Amphipod Gammarus sp. (Arthropoda: Crustacea) in Fars Province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25672 | 18721 | 2018-10-14 03:00:20 | 25672 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Gammarus (Crustacea, Amphipoda), widely distributed in various geographical areas in Iran, is one of the important candidates for artificial production for using in fish food. So far, the ecology of this crustacean, its distribution map in Iran, and the probability of its production in artificial conditions has been investigated. For finding a suitable method to make its production investments beneficial, it is needed to precisely investigate reproduction cycles and growth, to find ways for reaching their maximum production. Two sub-population of G. pseudosyriacus was monthly sampled in two different stations in Arjan spring, Arjan Protected Area, Fars Province in 2006. The two stations differed mainly in their distance to the spring source and to the roadside stores and restaurants. Sex ratios, number of ovigerous females, adult females, clutch size (eggs per brood pouch), egg volume, and the population composition were counted or measured. Fecundity index (FI) and reproductive effort (RE) were calculated using these basic data. Dissolved oxygen, air and water temperature, pH, and electrical conductivity were measured in the field; calcium, magnesium, potassium, and total hardness were measured in laboratory. Station 2 showed higher water temperature, dissolved oxygen, and ionic content. The number of populations was maximum in late winter and minimum in late summer. Both populations produced fewer eggs in autumn, and there were more non-ovigerous females in autumn-winter, while more ovigerous in spring-summer. Males and females of station 1showed a higher number, however, in both stations the sex ratio by weight favored males. Both sexes showed increased weights in spring and summer months and male samples had higher weights in station 1 compared to station 2. Females of station 1 produced eggs of the twice volume, while decreasing clutch size. Both populations showed higher fecundity index in late winter and early spring, which was higher in overall in station 2. As many other Gammarus species, the two subpopulation of G. pseudosyriacus had a continuous reproduction throughout the year. Seasonal patterns of population numbers suggest that the strategy of this population is to increase number in winter and weight in summer. It was suggested that both sub-populations evaluate late-winter to early spring as more suitable, therefore do better investment to produce more offspring in this time period. On the other hand, higher fecundity index in station 2 suggests lower stability of this habitat. Individuals in this habitat expend their energy in production of more eggs to increase the chance of their offspring survival to maintain the population size in a maximum possible level. Females of sub-population 1 produced fewer eggs, but they made more investment of resources for each egg. This strategy indicates higher stability in suitable conditions of the hosting environment.
    Keywords: Biology ; Ecology ; Iran ; Amphipod ; Gammarus ; Reproductive cycle ; Fecundity index ; Reproductive effort
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 60
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 193
    facet.materialart.
    Unknown
    A study on the parasites (protozoan and metazoan) of freshwater crayfish (Astacus leptodactylus) in the Aras reservoir (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25684 | 18721 | 2018-10-08 09:11:18 | 25684 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Aras reservoir freshwater crayfish is an important economic fisheries resource of West Azarbaijan, Iran. This study was concluded to evaluate the prevalence of parasitic infestation of Crayfish in this area during different seasons of 2012. Among 390 different sizes of Astacus leptodactylus which were examined, arrange of ectocommensals or ectosymbionts from a number of different phyla including 9 phylum and 11 class infested the different anatomic units of the surface and appendages such as gills, head , thorax, abdomen, walking legs, uropod, telson, antennae and antennulae of freshwater crayfish. Common groups such as peritrich ciliates, suctorian ciliates, free living nematodes, branchiobdellids, and Algae, copepods, rotifers and oligochaetes have also been observed in association with freshwater crayfish.
    Keywords: Fisheries ; Health ; Iran ; Aras dam ; West Azarbaijan ; Crayfish ; Freshwater ; Parasitic andcommensal infestation ; Astacus leptodactylus
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 58
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 194
    facet.materialart.
    Unknown
    Genetic population analysis of jinga shrimp (Metapenaeus affinis) in Persian Gulf (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25688 | 18721 | 2018-10-08 09:12:04 | 25688 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Jinga shrimp Metapenaeus affinis is one of the most important penaeide shrimp species in Persian Gulf that has the highest amount of shrimp catch after banana shrimp in Hormozgan province. Regarding the importance of Jinga shrimp in fisheries of this province, genetic diversity and population structure of this species was assessed for the first time by mitochondrial 16SrRNA sequencing. A number of 18 shrimps were collected from the regions of Bandar Abbas, Bushehr and Khuzestan (six samples each region). DNA Extraction was performed using phenolchloroform and by optimizing the PCR for amplification of 16SrRNA, the most suitable temperature for primer binding was 48 °C. Analysis of 18 sequenced samples including 486 aligned base pairs of 16SrRNA yielded 480 monomorphic loci, 6 polymorphic loci and 2 transitions. No insertions and deletions were observed. 9 haplotypes were identified from the 18 samples. Mean haplotype diversity in each region was recorded from 0.0 ± 0.0 (Bandar Abbas) to 0.333 ± 0.215 (Bushehr) and 0.333 ± 0.215 (Khuzestan), and mean nucleotide diversity from 0.0 ± 0.0 (Bandar Abbas) to 0.003 ± 0.003 (Bushehr) and 0.001 ± 0.001 (Khuzestan). Haplotype and nucleotide diversity of all samples were 0.608 ± 0.007 and 0.002 ± 0.003, respectively. The maximum amount of F- statistic parameter was 0.750 between samples of Bandar Abbas and Khuzestan and the minimum amount between Bushehr and Khuzestan (-0.105). At probability level of 0.05, population differentiation was significant between Bandar Abbas and two other regions of Bushehr and Khuzestan but not significant between regions of Bushehr and Khuzestan. Test of exact p values within population confirmed the difference of Bandar Abbas population from the two other populations. Phylogenetic trees showed the differentiation of Bandar Abbas population from the two other regions. The results of this study using mitochondrial 16SrRNA sequencing revealed that the Jinga shrimp population of Bandar Abbas is a differentiated and separated gene pool from the two other regions, and although the populations of Bushehr and Khuzestan seem not genetically separated, molecular diversity of this species is acceptable in these two regions.
    Keywords: Biology ; Fisheries ; Iran ; Persian Gulf ; Sequencing ; Population structure ; 16SrRNA ; Jinga shrimp ; Metapenaeus affinis
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 60
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 195
    facet.materialart.
    Unknown
    The feasibility of creating a natural habitat for spawning, bony fish in the Caspian Sea in order to preserve biodiversity and genetic risk (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25687 | 18721 | 2018-10-08 10:51:13 | 25687 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The purpose of this study was to investigate the possibility of natural reproduction of indanger fish in the southern Caspian Sea in Tajan, Haraz,Sardabrood and Chalos rivers, and identify suitable habitats for this species in the study area as a genetic reserve.Sampling of physical and chemical parameters of water, macrobenthic invertebrates and fish fauna was conducted seasonaly in each rivers at selected stations from febrary 2010 during one year. Macrobenthic invertebrate sampling were used bySorber sampler and fish was collected by gill net and electroshocker set with a voltage of 1.7 A and 100-300 V. A total of 53 taxa of macrobenticinvertabrateshave been identified in the four mentioned rivers, in which Tajanriverconsisted of 47 taxa with highest richness.20 species of fish were determined in the studied rivers that 6 of them were non-native species.The results showed that the predominant identified fish species were native in the river. The fish species diversity increases as one moves from the headstream towards the estuaries of the two studied Sardabrud and Chalus rivers.The results of this study showed that the relative abundance of fish species resistant to pollution and hard environmental conditions were much more that sensitive species. physicochemical parameters of water such as; water temperature, DO, BOD5, pH, TSS, TDS, EC, turbidity, nutrients, biodiversity index such as Shanon index, EPT, HFBI, EPT/CHIR, nutrition functioning group and present or absent of fish species showed that there are significant decrease in water qualities from upstraem ratio to down stream (For example, in Tajan river water turbidity varied from 0 at station 1 to 333 NTU at station 6, Which is strongly influenced by sand workshops. As well as the activities of a significant impact of fish farming workshop on the Haraz river water quality). The minimum of HFBI index was 2.84 at station 1 and the maximum was recorded at station 5 with 6.01, and there is not any possibility to natural reproduction of migrated species that are dominant and indanger at downstream. Conditions for natural reproduction of this species in the rivers of srdabrood and Chalus there is to some. In Shahid- Rajaei dam the maximum relative abundance of fish species belonged to Capoeta capoeta, Luciobarbus capito and Squalius cephalus, respectively. These species have different age, length and weight stuctures at Shahid- Rajaei dam inhabitant, and the resourval of this dam and it,s upstream have been preparing auch a favorabile condition that seems there are potentioal of introductionand inhabitant of some of the Migratory and indanger fish species such as Barbels, Sturgeon, Alburnus chalcoides and etc. as genetic reserve for biodiversity preservation.
    Keywords: Biology ; Fisheries ; Iran ; Tajan ; Chalos rivers ; Haraz ; Sardabrood ; Inhabitant ; Pollution ; Rehabilitation ; Indanger fish species ; Alburnus chalcoides ; Squalius cephalus ; Luciobarbus capito ; Capoeta capoeta
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 70
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 196
    facet.materialart.
    Unknown
    Effects of drought on ecological properties and water quality of Dorudzan reservoir (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25691 | 18721 | 2018-10-08 09:15:43 | 25691 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Dorudzan reservoir is the main provider of drinking water for the capital Shiraz, as well as the most significant storage of water in the Kor river course. In addition of eroded material, a load of agricultural outputs from upstream are moved to the lake every year. Main physiographic, physical and chemical, and biological components of the lake were monthly sampled and analysed from Novembr 2010 to October 2011. Mean annual measures were water temperature 16.7˚C (SD=5.8), pH 8.2 (SD=0.3), dissolved oxygen 7.6 mg/l (SD=1.7), ammonium 0.05 mg/l (SD=0.08), nitrite 0.004 mg/l (SD=0.003), nitrate 0.44 mg/l (SD=0.44), phosphate 0.20 mg/l (SD=0.23), silicate 7.00 mg/l (SD=2.49), BOD 2.29 mg/l (SD=1.00), COD 24.49 mg/l (SD=15.47), electrical conductivity 720 µs/cm (SD=219), total dissolved solids 457.67 mg/l (SD=138.72), calcium hardness 61.30 mg/l (SD=13.45), and magnesium hardness 20.23 mg/l (SD=9.18). Living parts of the ecosystem including species of fish, orders and families of benthic invertebrates, zooplanktons, and phytoplanktons were investigated. Benthic macroinvertebrates included various nematodes, oligochates, gastropods, bivalves, and insect larvae (dipteral and coleptera), most abundant of which were dipteran larvae, mollusks, and nematodes. Dominant zooplankton was Bosmina, with Daphnia and Cyclops in next ranks. Among rotifer, Trichocera was more abundant than Lecanae. Bosmina showed the most abundance in summer and Daphnia in spring. Trichocera had its most abundance in summer as well, while Lecanae was more abundant in Automn and winter. A total of 41 algal genera from 8 divisions were found. Dominant phytoplankton division was Chlorophyta, with genus Pediastrum. Dominant microalga was Dynobrion (Chrysophyta) in Spring, Cylindrospermum and (both Cyanophyta) in Summer, Microsystis in Automn, and Ceratium (Dynophyta) in Winter. Ceratium were found in all seasons in most of the sampling sites, and showed highest abundance compared to other genera of its division. Dominant genus of diatoms was Fragilaria. Fish populations include Alburnus mossulensis, Capoeta aculeate, Capoeta damascina, Carasobarbus luteus, Carassius gibelio, Cyprinus carpio, and Hypophthalmichthys molitrix. Main different parts of the lake showed quite different composition of fish species. An epidemic occurance of the crustacean ectoparasite Lernea cyprinacea among most fishes was another important finding. These findings will serve as a base for future studies as a set point of drought situations.
    Keywords: Ecology ; Iran ; Dorudzan ; Limnology ; Reservoir ; Plankton ; Fish ; Alburnus mossulensis ; Capoeta aculeate ; Capoeta damascina ; Carasobarbus luteus ; Carassius gibelio ; Cyprinus carpio ; Hypophthalmichthys molitrix
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 72
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 197
    facet.materialart.
    Unknown
    Population dynamics and stock assessment of kilka in Iranian waters of the Caspian Sea (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25694 | 18721 | 2018-10-08 09:20:04 | 25694 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The main objectives of the present study were to estimate of biomass and maximum sustainable yield of common kilka in Iranian waters of the Caspian Sea. This paper examines the maximum sustainable yield (MSY) and fishing intensity at MSY (fMSY) and then using by fMSY, yield-per-recruit and spawning biomass-per-recruit under various harvest strategies of Fmax, F0.1 and F40%; the acceptable biological catch (ABC) was estimated. The results showed that the catch of three species of kilka were 24080 and 22969 t in 2012-2013 and 2013-2014 in Iranian waters of the Caspian sea, respectively and common kilka predominated with 98.1% and 98.9%, respectively. Growth parameters were estimated as L_∞=141.8 mm, K=0.297 yea^r−1, t_0=−1.048 year^−1. The ages of common kilka comprised 6 age groups, ranged from 1 to 6 years and Age groups 3 and 4 years old had the highest frequency. In the years 2012-2013, the catch of age 1 and age 4 represented the lowest and highest proportion of total catch (133.6 and 9121.6 t). In 2013-2014, followed the catch of age 1 and age 3 had the lowest and highest proportion of total catch (151.9 and 8700.2 t). The instantaneous coefficient of natural mortality was estimated as 0.506 year^−1 and total mortality and the instantaneous coefficient of terminal fishing mortality were 0.894 and 1.40 year^−1 respectively. In the years 2012-2013 and 2013-2014, the biomass of common kilka was estimated 90700 and 83300 t, respectively. Also, the fishing mortality was 0.622 and 0.894 year^−1 and the exploration rates were 0.551 and 0.636. The reference points of common kilka at F0.1 and F40% were estimated 0.92 and 0.80 year^−1, respectively. According to Schafer model the MSY and fMSY were estimated 22670 t and 8690 vessel×nights (a unit of effort). In 2013-2014, the ABC of common kilka was estimated 17500, 20060, 23500 and 18900 t in tiers 2, 3, 4 and 5, respectively. However, for the implementation of a precautionary management approach the lower and more accurate ABC-value, based on more information, should be selected and thus the catch should be restricted to 17500 t.
    Keywords: Fisheries ; Iran ; Caspian Sea ; Kilka ; Biomass ; Yield per recruit ; Acceptable biological catch ; Population
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 36
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 198
    facet.materialart.
    Unknown
    Ecological monitoring in shadegan wetland (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25690 | 18721 | 2018-10-08 17:55:29 | 25690 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Shadegan wetland is located in the southwest of Iran and consists of three parts water: Fresh water, tidal-coastal zones and salt water. Climate is warm and dry. Although Surface of Wetlands is different seasons, but the study area is approximately 126945 hectares. Water quality in Shadegan Wetland is brackish water to salt and the hardness of the water component is hard to classify. The BOD5 of water is shows relatively clean to be suspicious. Values of pH, temperature, dissolved oxygen, BOD5, nitrite, phosphate, ammonia and TSS than the previous year are decreased and in this study salinity has increased electrical conductivity, total hardness, TDS and nitrate. In this study have been identified 42 genuses of phytoplankton in four groups: Bacillariophycea (diatoms), Cyanophyceae, Chlorophyceae and Dinophyceae that's diatoms are the most dominant. Also 24 genuses of zooplankton have been identified in four groups: protozoa, Rotifer, Copepod and Cladocera that are rotifer are the most dominant. Doraq and Atish stations have the most of abundance of plankton. Phytoplankton biodiversity is greatest at stations Rgbh and Atish. The average annual primary production 610 gC/m^2 /year and its placed the middle class on fertility. Average annual primary production in the phytobenthose 486 gC/m^²/year and the average monthly range of chlorophyll a and primary production 0.54-11.65 mg/m^² and 0.1-3.45 gC/m^²/day respectively. The amount average chlorophyll a is greater in Gargar, Maleh and Rgbh stations. The size of the wetland sediments had not important role in the phytobenthose production. The survey identified that 14 groups of macro benthic that’s Chironomidae families have the highest frequency. The highest and the lowest frequency in Atish and Doraq stations respectively. In the all stations have high SiltClay and organic matter in sediments is more in Maleh station from other areas. Macro benthos of the Rgbh and Atish stations more presents of the larvae that’s resistant to pollution of Chironomidae. Assessment of fish stocks of the common carp pond shows that the highest biomass (52.63 kg per hectare) and lowest Shiq fish (0.33 kg per hectare). The highest biomass are in autumn (337.17 kg per hectare) and lowest in summer (83.19 kg per hectare) and the average amount of biomass in total during the year were calculated 197.57 kg per hectare Shadegan Wetland. The amount of fish is obtained about 2.62 in Shadegan, which indicates the moderate wetland condition. The most of species spawning season are overlapped with each other, which occurs in winter and spring. The length - weight of fish indicating their growth is isometric.
    Keywords: Ecology ; Iran ; Shadegan Wetland ; Hydro chemical ; Plankton ; Phytobenthose ; Benthos ; Stock assessment ; Hunting ; Fishing ; Monitoring
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 124
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 199
    facet.materialart.
    Unknown
    Determination of water quality characteristics of Shahid Rajaei reservoir (Sari) based on physic-chemical parameters (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25697 | 18721 | 2018-10-08 10:05:23 | 25697 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The water quality provides the valuable information about the available resources for human usage. The reservoirs are the important resources of surface water which could be considered as an appropriate water resource for irrigation, drinking water and also fish culturing. The Shahid Rajaei Reservoir- Sari is an important reservoir in Iran, which conducted to study on its water quality in this survey. In this study, some of the physicochemical parameters and Chlorophyl- a of Shahid Rajaei reservoir were measured at 4 stations (Shirin Roud branch, Sefid Roud branch, the crossing point of branches, near the tower) during six sampling months (June, July, August, September, November and February) in 2012-2013. The water quality and trophic status of reservoir calculated based on some reference values and the modified Carlson formula. The results showed that the mean (±Standard Error) of temperature, dissolved oxygen, pH, phosohate, amonium and nitrate concentrations and Chlorophyl a were 21.35 (±1.30) ºC, 10.48 (±0.37), 8.54 (±0.04), 0.050 (±0.004), 0.036 (±0.004), 0.75 (±0.03) mg/l and 18.00 (±7.23) mg/m^3 , respectively. In the present study, temperature between surface and deep layer was stratified in June and July, which the stratification was registerd 0.47 and 0.69 °C decreases with increasing of each meter depth in 15 to 30 meter culumn. But, these changes for each increasing meter of water depth were 0.2 to 0.26 °C in August and September, respectively, and finally was close to zero in November. In the warm months (July, August and September) with the formation of thermal stratification in the reservoir was formed oxygen stratification, but in the cold season (November and February), with vertical mixing of water oxygen and percent saturation of the reservoir was nearly homogeneous. The results showed that the European authorities (OECD) trophic status varied between mezotrophic to hypertrophic during the sampling period at all stations. The comparison with the values listed in the references of Iranian dams based on transparency and chlorophyll variables showed similar results. However, phosphorus variable (due to limited for phytoplankton) was not showing the true conditions of trophic status. As a conlusion, trophic status of Shahid Rajaei dam based on Carlson trophic index (TSI) was obtained oligotrophic (May and October), mezotrophic (February) and eutrophic (August and September) condintion during diferent months. Therefore, water management of the reservoir was more attention during warm months.
    Keywords: Ecology ; Iran ; Shahid Rajaei Reservoir ; Sari ; Mazandaran ; Water quality ; Trophic State ; Physic-chemical parameters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 58
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 200
    facet.materialart.
    Unknown
    Assessing biotic and abiotic characteristics of fisheries communities in Shadegan Wetland (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25692 | 18721 | 2018-10-08 09:20:18 | 25692 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Shadegan wetland is one the international wetland which is registered in UNESCO and it is located in south of Khuzestan. This wetland have three zones: freshwater zone, intertidal zone and coastal zone with saltwater. The wetland is located in warm and arid region. This study was done in freshwater zone with the aim of finding solutions for integrated management to improve water quality of this habitat by monitoring of environmental trends and assessing the present situation. This study was done from March 2010 to February 2011 in four area of Shadegan wetland. The water quality index results showed that all stations of Shadegan wetland are categorized as group three with moderate quality. Rogbe station have the highest quality and Maleh have the lowest quality. Finally we can conclude that wastewater of sugarcane plants have negative effect and Azadegan sewage have positive effect on the wetland, and Maleh inlet can have the most negative effect on water quality. The amount of dissolved oxygen, BOD5, nitrite and phosphate decreased and conductivity, salinity, TDS and nitrate increased that can be due to water scarcity and droughts in the region. 6 class and 54 genius of phytoplankton were identified. Bacillariophycae with 20 genius have (52%) and chlorophycae with 22 genius (14%) have the highest frequency percentage of total frequency. The average value of chlorophyll a was 10.95 mg/m3 per year and the annual average primary production was 2.68 g/c/m2 in a day which Rogbe and Maleh had the highest and lowest value respectively and eutrophication floating plankton were in high mesotrophic. 18 epipleon and 27 epiphyton genius of benthic algae were identified which Bacillariophycae and cyanophycae were dominant. Chlorophyll a was the most common pigment and the wetland diversity index indicated semi polluted situation and eutrophication statues was high mesotrophic to eutrophic and based on Palmer index, the wetland had no severe organic pollution. Brachionus spp from zooplankton rotifer increased in summer due to high tolerance of salinity. Wetland zooplankton index indicates low quality of wetland situation. In substrate with vegetation, 15 groups of macrofauna of benthos were identified and Chironomidae had the highest frequency. In sedimentary substrate, 7 groups of macrobenthos were observed which in comparison to 1995 they severely decreased. These changes can be due to drought, sewage entrance, habitat degradation and ecosystem disturbances. Satellite studies of the Shadegan wetland show that 69,945 hectares are suitable for aquatic life.
    Keywords: Ecology ; Iran ; Shadegan Wetland ; Water quality ; Plankton ; Benthic algae ; Benthos ; Fish stocks ; Fishing
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 152
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...