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
  • Growth  (117)
  • Population  (73)
  • Chemical  (53)
  • Chemistry
  • General Chemistry
  • Inorganic Chemistry
  • LUNAR AND PLANETARY EXPLORATION
  • Quantum information
  • Tehran, Iran  (233)
  • Massachusetts Institute of Technology and Woods Hole Oceanographic Institution  (1)
  • 2015-2019  (234)
  • 2018  (234)
Collection
Keywords
Publisher
Years
  • 2015-2019  (234)
Year
  • 1
    facet.materialart.
    Unknown
    Investigation on the shelf life and quality changes of tilapia during storage , and it’s consumer acceptability (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In this study، effects of slow and quick freezing، different packaging methods on quality of red and black tilapia and consumer acceptability of tilapia were investigatied. For preparation the samples for inveatigation the effects of slow and quick freezing methods on quality of tilapia، fresh tilapia fillets were frozen by slow and quick frozen methods. Slow frozen samples were prepared by storing the packed fillets directly in the -18 C°. The sprila freezing tunle with -30C° was also used for preparation the quick frozen sample. The quick frozen samples were then stored at -18C for six months. Proximate composition، fatty acid profiles، TBA، PV، TVN، Total cuont، Drip loss، and sensory evaluation of the samples were determined in every month. Scanning Electron Microscopy (SEM) was used for study on the effects of the frozen condition on the microstructure of the fillets. Results indicated that two different frozen methods had significantly different effects on the quality of the samples. Most of the proximate composition (protein، moistre and fat) reduced during the storage. Quick frozen samples had significantly (P〈0.05) lower reduction than slow frozen samples. All of the chemical quality indexes (PV، TBA، and TVN) increased during the storage as compered to the fresh samples. In these paramethers، the slow freezing had higher changes than quick freezing metods (P〈0.05). The microbial properties of the samples showed decrese during the storage. Lower amont of total cuont was observed at the end of the storage time in the quick frozen samples than slow frozen once (P〈0.05). The large changes in the fatty acid profiles of the sample were fond in all samples. During the storage SFA and MUF of the samples increased however، the PUFA decresed. A lower change was obseved in the quick frozen samples than slow frozen samples (P〈0.05). Drip loss was increased in both frozen samples during the storage period. The percentage of the drip in the slow frozen samples was significantly higer than quick frozen samples (P〈0.05). SEM micrographs were also showed that the chnges in the microstructur of the samples was different in the slow and frozen samples. Slow freezing methods had higher damge in the microstructure of the sample then quick freezing mathods. Sensory evaluation of the samples indicated that a better acceptability in the quick frozen samples than slow frozen sample (P〈0.05). For study the effect of some different methods of packaging fresh fillets were packed Modified Atmosphere Packaging (MAP) (40% CO2، 5% O2 and 55% N2) Vacuum Packaging and normal and stored in the refrigerator's. The packaged samples in these methods were examined for 10 days with regard to the changes in chemical (TVN، PV، pH)، microbial (total viable count) and organoleptic agents. The results indicated that the samples packed in MAP conditions had higher quality than that of the other methods at the end of the storing period. In addition، the slower destructive impacts and microbial growth was observed in MAP. According to the obtained results، we can suggest that the packaging of tilapia under MAP conditions resulted in the increase in the durability، storing، and distribution period of fillets. Consumer acceptability of tilapia was also investigated in this research. For this research، 300 farmed Nile tilapia (Oreochromis niloticus) and 300 Red tilapia (Oreochromi. niloticus × Tilapia mosambicus) were collected from the salt water fish research station located in Bafgh Yazd. The fish were transported to the National Fish Processing Research Center by using CSW method. Two methods were used for the study. First method was based on the sensory evaluation. In this method the fish fillets were cooked with Tuster and then the cooked sample were tested by 8 trained panelists. The second methods was established by Central Location Test ) CLT) In this method the fish fillet were fried in sun flower oil and tested by 276 consumers of three provinces ( Theran، Gillan and Mazanderan). 9-point scale (1 = very bad، 9 = very good) was applied for investigating the acceptability level of the samples. Evaluation questionnaires of consumers were designed based on the CLT method and after evaluating the reliability and validity of the questionnaires. The proximate compositions of the fillet were also determined. Results showed that the mean acceptance rates of both species of tilapia did not have significant differences in all three provinces. However، comparing the acceptance rates of black fillets in Tehran (7/05)، Guilan (6/24) and Mazandaran (6/56) and red fillets in Tehran (6/91)، Guilan (6/19) and Caspian (6/59) showed significant differences in both samples. Results showed that the tilapia meat had between 1.30 – 1.68% fat، 18.70-19.26 protein، 78-79% moisture and 1.34-1.8 % ash.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Chemical ; Microbial ; Nile tilapia ; Red Tilapia ; Freezing ; Packing ; Consumer ; Acceptabilty ; Black tilapia ; Sample ; Fatty acid ; Protein
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 197pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Population dynamic of bony fishes in the southern part of the Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was conducted to determine growth parameters, catch and fishing effort trends, stock assessment and Acceptable Biological Catch (ABC) of bony fishes in the Iranian coastal waters of Caspian Sea in the years 2010-2011 and 2011-2012. According to the result, the numbers of beach seines were 131 and 128 and their fishing efforts were observed 50184 and 42255 beach seining during 2010-11 and 2011-12, respectively. The catch per unit of effort CPUE) was calculated 182.9 and 205.6 kg/haul during two sampling periods, respectively. The total catches (including illegal fishing) were also obtained 16601.5 mt and 17034.1 mt during 2010-11 and 2011-12, respectively. The highest proportion of catch was belonged to kutum and golden grey mullet (86% and 88%, respectively) in two fishing seasons aforementioned above. Growth parameters of kutum were estimated as K=0.21/yr, L∞ = 60.0 cm, t0 = 0/yr. The Growth parameters were K=0.18/yr, L∞ = 61.1 cm, t0 = -0.14/yr for golden gray mullet and were K=0.12/yr, L∞ = 73.6 cm, t0 = 0.92/yr for common carp. Based on catch-at-age data, in the years 2010-2011 and 2011-2012, the total biomass, from the biomass-based cohort analysis were estimated 41700mt and 34400 mt for kutum and 14600 mt and 14400 mt for golden grey mullet, respectively. The reference points of F0.1 and F35% were 0.41/yr and 0.34/yr for kutum and 0.36/yr and 0.33/yr for golden grey mullet, respectively. Stock enhancement plays an important role in recovery of kutum stocks in the Iranian coastal waters of Caspian Sea. There is a significantly negative correlation between fingerlings released and condition factor (CF) and recruitment and CF. The different trends for fingerlings, recruitments and CF suggest that CF may be partly density-dependent, declining at high population sizes due to intra-specific competition. Therefore, more research should be conducted to determine the desirable level of artificial propagation. Food consumed by fish species, Rutilus frisii kutum, Rutilus rutilus caspicus, Cyprinus carpio, Liza auratus and Liza saliens were included Foraminifera, Porifera, Annelida, Mollusca, Arthropoda, filamentous algae, fish eggs and detritus.The results showed that Rutilusfrisii kutum generally feed on Balanus and Cerastorderma. The main food item for Cyprinuscarpio, Liza auratus and Liza salienswas detritus. Based on available models, the ABCs were estimated as 6600-7400 mt for kutum and 2200-2800 mt for golden grey mullet (with precautionary approach 6600 mt and 2200 mt for kutum and mullet, respectively) in 2011-12. Two species (kutum and golden grey mullet) are vulnerable to environmental factors, and these factors should be considered in the stock assessment and management of the fish. For two species, the ABC with a lower andmore accurate value based onmore information, should be selectedfor the implementation of a precautionary management approach.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Bony fishes ; Growth ; Mortality ; Biomass ; Acceptable biological catch ; Population ; Stock assessment ; Fishing ; Rutilus frisii kutum ; Rutilus rutilus caspicus ; Cyprinus carpio ; Liza auratus ; Algae ; Species
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 72pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Nutrient requirement in Salmo trutta caspius Kessler (1870) for aquaculture purposes (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: A sharp decline in natural population of Caspian brown trout lead to implementing of restocking program in Iran. Along the stock recovery program, the artificial production of this species has been attracted too much attention in recent years. The objective of the study is to assess the effects of protein and energy levels of diet on fish performance, growth efficiency of Caspian brown trout in order to develop a proper diet for production of this species. Six experimental diets were formulated by replacing casein as a pure protein source with fat as an energy source in the diets according to a 3×2 factorial design. The diet was assigned to 18 tanks with 50 fish each, with three replicated for each diet. The experiment was conducted for 8-weeks with Caspian brown trout with an initial body weight of around 7 g. Caspian brown trout demonstrated a better FCR and a larger SGR at lower protein levels (45 and 50%) in comparison to high protein level (55%; P〈0.05). Protein efficiency ratio improved by a decrease in protein content of the diet (P〈0.05), but energy content of diets does not affect any growth related parameter such as FCR, SGR and PER. There was also no interaction between protein and energy levels in the growth related parameters, suggesting the effect of protein on the growth parameters in Caspian brown trout did not depend on energy levels of diet. In conclusion diet containing 50% protein can support the maximum growth. High dietary energy level of the diet dose in cooperate in protein sparing effect.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Caspian brown trout ; Artificial production ; Growth ; Diet ; Protein ; Energy ; Weight ; FCR ; SGR ; Salmo trutta caspius ; Aquaculture
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 40pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    Estimation of growth parameters, mortality rates and fishing distribution for Parastromateus niger in coastal water Sistan & Baluchestan Province (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was conducted for estimation of growth of parameters, mortality rates and fishing distribution of Parastromateus niger using length frequecy information collected in Sistan & Baluchestan province......
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Growth ; Mortality ; Distribution
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 76pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 5
    facet.materialart.
    Unknown
    Population genetic structure of silver pomfret, Pampus argenteus, in Persian Gulf and Oman Sea in Iran and Kuwait waters by using10 Microsatellite Markers (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The silver pomfret, Pampus argenteus, is distributed in Indo-western pacific ocean, especially in Persian Gulf and Oman sea, and although is widely commercially exploited, the genetics structure of this species is not clear completely. In the present study, the genetic diversity and population structure of Pampus argentus in the Persian Gulf and Oman Sea were investigated using microsatellite DNA markers. Genomic DNA from 125 specimens was extracted and PCR amplification performed. Seven loci with reasonable polymorphism were amplified. The results showed that average of observed heterozygosity was ranged from 0.54 while expected heterozygosity was 0.67. After applying the Hardy-Weinberg Equilibrium (HWE) test, some loci were found to be significantly deviated from HWE in some populations in which deficiency of heterozygotes was apparent. Population differentiation observed among all populations (P 0.01). The population differentiation (Fst) value between Kuwait and bushehr was the highest and significant (0.087) and between Chabahar and Bushehr (0.021) was the lowest and significant. Genetic distance analysis showed that the largest distance (0.269) was between Khuzestan and Chabahar and the smallest distance (0.075) was between Bushehr and Chabahar. The reported results could be of interest for management and conservation programmes of this species in the Persian Gulf and Oman Sea.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Population ; Genetic ; Structure ; Silver pomfret ; Pampus argenteus ; Microsatellite markers ; Species ; Diversity ; DNA ; PCR ; Heterozygosity ; Equilibrium
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 70pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 6
    facet.materialart.
    Unknown
    The survey of feeding and reproduction of cetenophora Mnemiopsis leidyi in the southern of Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Menmiopsis leidyi was entered into Caspian Sea from Black Sea and mass population constitutes in the southern Caspian Sea. In this surveys, the relationship between length and wet weight measured and length and weight followed by this equation: n= 384, R^ 2=0.87 w= 0.003 L^ 9005 . The relationship of dry and wet weight calculated, in this surveys, the ratio of dry weight to wet weight was equal to 1.615% in 12 salinity. In vitro, the clearance rate at 12 and 27 C were 52.48 and 107.33 ml/h, respectively, daily ration at above temperatures were 1.98 and 16.65 respectively. Mnemiopsis leidyi can feed Acartia in accordance to 16.5 mg/1gbw (body weight) at 27 C in one day. The average digestive time in 12 C and 27 C were 77.50 min and 36 min respectively. The digestive value in 27 C was 2.5 fold than 12 C . The result indicated that clearance rate, daily ration and digest were increased in high temperature. Stomach content of Mnemiopsis leidyi was shown that this organism utilized from Acartia and Balanus, in addition, stomach content of kilka including two species of zooplankton from the southern Caspian Sea. Stomach contents of clupeonella cultiventris contain more than 54 percent of Acartia and its nauplii. This frequency observed in cluponella engrauliformis and clupeonella grimmi. On basis of zooplankton sampling in the sea, over 90 percentage of zooplankton populations contain Acartia.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Menmiopsis leidyi ; Zooplankton ; Population ; Survey ; Feeding ; Cetenophora
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 45pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 7
    facet.materialart.
    Unknown
    Determination of catchability bony-fish and optimized exploitation in the Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: To accomplish the stock assessment that pre-planned for bony-fish resources investigation started by considering two pivotal act. First gathering biometric data and second using catch statistics information for stock analyses. Implementing the research programmes five itinerant groups in Anzali, Keyashahr, Noshahar, Babolsar, Torkaman have been organized during fishing season. The biometric data were supplied in computer that distincted by each fish species and subdivided into age groups. In analyses the samples, Bertalanffy formula used for calculating average length and age, also for growth coefficient. Total mortality rate calculated by using Pauly formula, and the biomass status estimated through Cohort analysis. The catch by beach seiner cooperatives recorded 8630 metric tons, but estimation including. Poacher catch raised the harvest to 15.6 thousand tons. The total catch of Kutum reduced by 1400 tons compared with previous year, but the estimation revealed the biomass of Kutum 18.5 thousand tones, the stock stowed reduction in quantity relative to past years. Harvest exceeding the limit, fishing pressure. And employing higher fishing effort, combining releasing the Kutum seedling with shorter average length in recent years, leaded the shrinkage of biomass of Kutum resources. The Golden Grey mullet catch has been estimated 3437 metric tons, the figure showed 1500 tons increment, in comparison with previous year, nearly 24% of catch was shorter than Lm50% of this species. In Guilan province higher number of sub - size golden mullet captured, this development occured less in Mazandaran and Golestan province. Higher rate of exploitation, reduction of catch in recent years, dominating small size fish in catch composition indicated the population undergoing stress in ecosystem. Thin - lipped grey mullet only comprised 9.2% of the mullet catch - Length - structure of this fish species population formed mainly by young small size fish, the biomass of latter estimated 1100 metric tons. Catch further than maximum sustainable yield, by higher exploitation rate, and gradual diminishing of harvest, represented the resources of this fish species suffering both by high fishing pressure and un - sustainable effort, which ultimately declined the fishery of this fish species. Carp catch and its resources in Anzali region become very low, it is necessary to enhance the stock by Sea-ranching programmes. The carp resources in Gorgan region enjoy better status, but catch practices do not compatible with rule and regulation in Gorgan and Gomeyshan area. The standing stock of Gorgan carp estimated nearly 6000 tons. The information concerning carp resources indicate the stock experiencing pressure and likely the catch will diminish in future. The total catal catch of carp calculated 1900 tons. In recent years the Caspian roach resources are increasing but the bulk of harvest fished illegally and by gill - nets. The total catch of the roach during 1998-1999 estimated 1700 tons. Considering the semi - artificial propagation of roach in Golestan province, if has been concluded the multiplication of this fish species also should be planned by fisheries authorities for Anzali region. It is also advisable catching of this fish species to be regulated soon and selective catch are proposed. The catch of pike - perch during the year of 1997 - 98 jumped to 95 tons, but 90% of catch formed by young fish or sub – standard length size. Almost, all the increment of catch attributed to the releasing of millions of seedlings in the Sea which the plan has been implemented by Iranian Fisheries. Increasing the numbers of released seedlings, with higher average weight Identification of most suitable site for unloading the fries could ensure better survival rate and contribute the enhancement of resources and produce good catch for this desirable fish species. The total catch of Bream hit 18 tons, but most of the catch comprised by young fish with sub - standard size. The present formation of fisheries population of bream are the result of seedling releasing! In the Sea by Iranian Fisheries, since the catch of bream are negligible despite releasing programmes of seedling in a decade which 14million individuals until now, one could conclude the programmes do not contributed effectively to stock rehabilitation. The Caspian Barbus (Barbus brachycephalus) are at the threshold 01 vanishing, at present a few numbers are caught, therefore B.capito appeared in catch composition. The catch of latter species in recent two years are increasing. Total catch during the year of 1998 - 99 estimated 34.5 tons, biomass calculated 93 tons. Caspian vimba are small size fish which beach seiner (mesh size in bosom 30 millimeters) could not capture them ideally, bulk of the catch caught in illegal manner by gill nets. The total catch estimated 154 tons which the present fishing procedures surpassed total allowable catch (136 tons). In recent years the catch of this fish species are increasing. "Shemaya' similar in size with Vimba are caught less by beach seiner, illegal catch are considerable, the total catch in 1998 - 99 estimated 86 tons. The level of harvesting of this fish species are increasing in recent years and its population size become significant relative to last years. The main part of catch concerning Aspius fish species occured in Guilan coastal area, high fishing pressure reduced the population size, including low discharge of water in rivers during spawning period, impact negatively to reproduction. Catch statistic in 1989 showed 128 tons of this fish species are caught but in 1998 - 99 it has been reduced to 6.8 tons. It has been suggested artificial spawning could prevent its fate as endangering species. Caspian salmon catch estimated 78 tons during 1998 - 99, salmon population in Caspian Sea are supported by releasing reared smolts, which in recent years nearly 500 thousands fingerlings released in suitable rivers. After banning the gil nets application in Southern Caspian Sea, the catch of salmon in beach seining are increasing. It is necessary the released smolts in rivers being protected for its safe approach to Caspian Sea. The total catch of herring fish species in 1998 - 99 were nearly 700 tons. The bulk of the catch occur In Guilan fishing area, elimination of gill - nets usage in Southern Caspian Sea contributed the increment of herrings catch in beach seining. The herring resources in Caspian Sea reduced relative to past decades. The catch during 1913 – 1916 ranged between 130 - 160 thousand tons, in Caspian Sea.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Stock assessment ; Bony-fish ; Fishing ; Species ; Samples ; Growth ; Mortality rates ; Biomass ; Kutum ; Carp ; Survival rate ; Barbus brachycephalus ; B.capito ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 136pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 8
    facet.materialart.
    Unknown
    The role of daphnia fed with purified and enriched phytoplankton with PUFA in enhancing growth and survival of Acipenser persicus larvae (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In this study, Daphnia longispina were fed with two freshwater green algae species, Chlorella vulgaris and Scenedesmus dimorphus, enriched with Docosahexaenoic acid (DHA). Chlorella vulgaris and Scenedesmus dimorphus were isolated and cultured for mass production. Three treatments with three replicates and a control group were considered to conduct this study. In order to investigate feeding, a total of 30 Acipenser persicus larvae with the initial mean weight of 68±3.6 mg were distributed into 12 plastic tanks of 60 L. Experimental fish larvae were fed daphnia collected from earthen ponds (as control group), daphnia enriched with Scenedesmus dimorphus (treatment 1), daphnia enriched with Chlorella vulgaris (treatment 2) and daphnia enriched with Chlorella vulgaris and Scenedesmus dimorphus (at the rates of 50%) (treatment 3). The microalgae density to enrich daphnia is estimated at 5×107 cells mL-1 . Fish larvae were fed at an amount of 30% body weight per day for four times. During the experimental period, water temperature, dissolved oxygen concentration and pH ranged between 18-24°C, 5.8-7.2 mg l-1 and 5.6-8.2, respectively. Monounsaturated fatty acids (MUFA) were the highest (32.3 %) in D. longispina enriched with Chlorella vulgaris and the highest concentration of polyunsaturated fatty acids (PUFA) (19.8%) was observed in D. longispina enriched with Scenedesmus dimorphus. The highest (21.6%) and lowest (13.2%) concentrations of PUFA in fish larvae were recorded in treatment 3 and the control group, respectively. The results obtained from the body weight increase (BWI %) revealed that there were significant differences (P≤0.05) between treatment 3 (daphnia enriched with chlorella and scenedesmus) and other treatments. The highest (5.5 ± 1.24 % day-1) and the lowest (4.6± 1.13% day-1) mean specific growth rates (SGR) were recorded in fish fed treatment 3 and the control group, respectively. The lowest (68%) and the highest (85%) survival rates were obtained in the control group and treatment 3, respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Daphnia ; Daphnia longispina ; Chlorella vulgaris ; Scenedesmus dimorphus ; Enrichment ; Microalgae ; Acipenser persicus ; survival ; Larvae ; Phytoplankton ; PUFA ; Growth
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 41pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 9
    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) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Commercial ; Morphological ; 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: Report , Refereed
    Format: 74pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 10
    facet.materialart.
    Unknown
    Molecular Population Genetic of Persian Sturgeon (Acipencer persicus) and Stellate Sturgeon (Acipencer stellatus) using Microsatellite markers (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The fishery stocks of most commercial aquatic stocks in the world have shown declining trends in the past two decades. Several factors have been responsible for the decline of stocks the most important of which over fishing and over-exploitation, pollution, loss of natural habitats and natural spawning grounds, construction of dams and bridges across the important rivers which restrict the migratory routes of spawners, decrease in natural reproduction and rehabilitation of stocks through artificial breeding programs. Over-exploitation of stocks and pollution directly affect decreasing stocks in an ecosystem. Not differentiating between different populations and stocks of a species found distributed in an aquatic ecosystem is considered one of the main factors which causes the depletion of stocks in most ecosystems in the world. In most cases this is because genetic variations in aquatic stocks in the wild are not taken into consideration. Six species of sturgeons are found living in the Caspian Sea and its drainage basin which produce more than 85-90% of the world caviar. The Persian sturgeon (Acipenser persicus) and the stellate sturgeon (Acipenser stellatus) are the main sturgeon species of the Caspian Sea. The Persian sturgeon is mainly found in the south Caspian Sea while the stellate sturgeon stocks are considered shared stocks by the five Caspian littoral states. Due to over fishing in the past two decades the legal catch figures for sturgeon stocks in the Caspian Sea dropped from 28500 tons in 1985 to less than 1500 tons in 2004. Similarly caviar production also dropped from 3000 tons to 110 tons in 2005. With regard to the severe reduction in sturgeon stocks it is necessary to take essential steps before these valuable species are totally wiped out. The fisheries management of the five Caspian littoral states should focus their efforts on identifying the different populations and stocks found in the Caspian Sea. Concerted measures should be taken to study the distribution and biomass of the different populations in order to develop a scientific solution for the sustainable use of these endangered species and to secure the long term conservation of sturgeon stocks. The aim of present study was to evaluate the genetic structure of the population of two species Acipenser persicus and Acipenser stellatus and to develop molecular markers to identify and differentiate different populations of these two species.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Commercial ; Population ; Genetic ; Persian Sturgeon ; Acipencer persicus ; Stellate Sturgeon ; Acipencer stellatus ; Microsatellite markers ; Fishery ; Pollution ; Spawning ; Species ; Aquatic Ecosystem ; Genetic ; Molecular
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 70pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 11
    facet.materialart.
    Unknown
    Production of monosex female population of Rainbow Trout by use of 17-B estradiol as direct method (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In many species of finfish, females exhibit higher growth rates than males and achieve larger sizes. In addition, in some species, males mature before reaching marketable size. Therefore, there is great interest from the fish farmers to produce all-female stocks. In this project tried to reversing the sex of rainbow trout larvae by 17 estradiol and direct method, further more finding the optimum dose of this natural estrogen for endocrine sex reversion of Rainbow trout (O. mykiss). Four experimental treatments were designed with doses of 10, 20, 30 and 40 mg/kgf. Trout which treated with 40 mg/kgf yielded 96% female and greatest growth.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rainbow trout ; Sex control ; Gonad ; 17-B Estradiol ; Species ; Finfish ; Females ; Males ; Growth ; Mature ; Larvae ; O.mykiss
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 32pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 12
    facet.materialart.
    Unknown
    Investigating the application of spawning shelter of Cattle fish for its enhancement of resources (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In this project,four types of structures,of 40 number was investigated.In a six month period,the structures were inspected 13 times.The total weight and number of eggs hatched on the structures were estimated to be 214.1kg and 94944 respectively.The weight and number of eggs settled on trap types were 141.9 and 60982 respectively,whereas,The eggs on cubical structures were estimated 56.7kg and 27088 ,on pyramid structures 7.9 and 3941 and then also were 6.9kg and 3280 eggs on cylindrical structures respectively.It is also estimated that 358 eggs were settled on The connecting line weighting 0.5kg.In this report four types of structures was compared.As a result,the trap, cubical, pyramid and cylindrical structures had contributed to the settelment of 66,27,4 and 3 percent of eggs in weight. While 64,29,4 and 3 percent of eggs in number was settled on these structures respectively.Thus it is concluded that the trap structures fallowed by cubical ones had acted more effectively relative to other two.If based on the results of other studies,we assume 80% survival rate of eggs and average weight of 1.2kg of survival growth cuttlefish , then it can be calculated that 160 structures can contribute to 91 tons increase in cuttlefish stock in one area of 4 to 5 acre.It is obviaus that by planning an annual increase of the structures,it is passible to attract more spawners to spawn and produce more larvae.Moreover,The old structures will be covered by corals and barnacles and become amore stalie and attractive spawning ground for cuttlefish.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Spawning ; Cuttlefish ; Structures ; Trap ; Growth ; Produce ; Types ; Weight ; Eggs ; Survival rate
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 66pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 13
    facet.materialart.
    Unknown
    Population Genetic Structure of Neogobius caspius (Eichwald ,1831) in the east and central of the South Caspian Sea using Microsatellite Markers (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Neogobius caspius is a small benthic fish that is native to the Caspian Sea. The importance of this fish is because of it is role as a main food resource of the Sturgeon fish. The genetic diversity of N.caspius populations in the Caspian Sea was studied using microsatellite technique. In the study 95 Samples of Neogobius caspius from two regions (torkman port and Chalus) in south Caspian Sea were collected. DNA was extracted using 12 pairs of microstellite primers polymerase chain Reaction (PCR) was conducted. DNA Bands were analyzed using uvdoct and GenAlEx software package. Out of 12 microsatellite primers, 11 loci were produced, in which 5 of them were polymorphic ,6 monomorph and one of them showed smear. Average of observed and expected hetrozygosity was 0/798 and 0/843 respectively. Significant genetic differences between 2 regions was observed (P 0/01). Deviations from hardy- Weinberg equilibrium were in all cases. These results indicate that at least, 2 population of Neogobius caspius exist in the south Caspian sea.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Microsatellite ; Genetic ; Population ; Neogobius caspius ; Benthic ; Native ; Sturgeon ; Diversity ; Samples ; PCR
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 22pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 14
    facet.materialart.
    Unknown
    Study of Kutum (Rutilus frisii kutum) population using mtDNA with PCR (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Study of Mahisefid population using mtDNA with PCR Mahisefid diversity was studied in four rivers including Lamir, Sefidrood, Shirrood and Tajan. Total sample was collected from four rivers when fish migrat to river for spawning, 100 samples from Sefidrood, 98 samples from Lamir, 48 samples from Shirrood and 48 samples from Tajan. DNA was extracted with phenolcholorophorm. Samples were used for RFLP, the PCR product were digested by 20 restriction enzymes as follow: TasI, HaeIII, HinfI, HincII, SalI, DraI, AccI, AvaII, XhaI, BshNI, AvaI, BclI, BshII, MspI, PstI, RsaI, SdnI, TaqI, TruI, VspI. The four restriction enzymes including: TasI, HaeIII, HinfI, HincII showed diversity, 6 enzyme didn t have any restriction and 14 enzyme showed monomorphic. Total 20 haplotype studied that haplotype AAAA and BAAA had most frequency. The average haplotype frequency of AAAA was 29.93% and the average haplotype frequency of BAAA was 27.55%. 2- Study of population of Mahisefid with microsatellite markers 120 specimens of R.frissi kutum were used from four rivers to test thirty primers (30 samples from each river) of which 8 primers showed polymorphism. A large variation in heterozygosity average over all samples was observed among loci, that ranged from 0.13 to 0.91. For a given locus, observed heterozygosity varied greatly among the samples. For example, in Lamir 0.07 at SPY5 and 1 in Sefid Rud at CA1. Tajan had an observed heterozygosity of only 0.17, whilst the Lamir had an observed heterozygosity of 0.07 at locus SPY5. At locus SPY4, Tajan and Sefid Rud are the same and (0.53) and Shir Rud is 0.83 and Lamir is 0.47. However, despite these differences, there was clear difference in average heterozygosity observed between the samples. To investigated of Hardy-Weinberg Equilibrium in all locus and all rivers deviate showed from Hardy-Weinberg Equilibrium was significantly different ( P〈0.01)except in SPY6 locus. The maximum average Ho was 0.91 in locus CA1 and minimum was 0.13 in locus SYP5 and maximum average of He was 0.89 in locus SYP4 and minimum was 0.28 in locus SYP6. Highest Ho was 1 in locus CA1 in Sefid Rud River and lowest was 0.07 in locus SYP5 in Lamir River , highest He was 0.92 in locus SYP4 in Shir Rud River and lowest was 0.24 in locus SYP6 in Tajan River. According to Nei (1978) the highest genetic distance was between Shir Rud River and Tajan River (0.07) and lowest genetic distance was between Sefid Rud River and Tajan River (0.05). The highest genetic similarity was between Sefid Rud River and Tajan River (0.95) and the lowest genetic similarity was between Shir Rud River and Tajan River (0.93). FST was significantly different (P 〉 0.05) between all samples except Lamir River and Sefid Rud River. The highest Fis was in Lamir River (0.84) in locus SPY5 and in Sefid Rud River in locus SPY5 (0.71), in locus CA12 (0.67) in Shir Rud River and SPY5 (0.63) in Tajan River. The lowest Fis is in locus CA1 (-0.55) in Sefid Rud River, in locus CA1 (-0.47) in Tajan River, in locus CA1 (-0.28) in Lamir River and in locus SPY6 (0.16) in Shir Rud River.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rutilus frisii kutum ; Population ; mtDNA ; PCR ; Diversity ; Sample ; Migrate ; Phenolcholorophorm ; R.frissi kutum ; Equilibrium
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 70pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 15
    facet.materialart.
    Unknown
    Biological studies of fishes (Clupeidae, Rutilus frisi kutum, Liza auratus, Cyprinus carpio, Chalchalburnus chalcoides, Vimba vimba, Abramis brama, Sander lucioperca & Liza saliens) of Southern Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: During the past decades the environmental status of the Caspian Sea has changed. Therefore, study on the biological structure such as: age, growth, Lm50%, feeding of fishes is necessary. In the present study the biological characteristics of some commercial important species including kilka, kutum, golden grey mullet and carp were studied during 2006-2010. Kutum, golden grey mullet and carp predominated in the catch composition of bonyfishes, representing 61.3, 29.6 and 7.6% of the total catch. The average fork lengths of kutum, golden grey mullet and carp were 38.4, 32.7 and 36.7 cm, and weights were 784.5, 411.0 and 977.0 g, respectively. The values of b in length-weight relationships were 3.02 and 2.97 for kutum and golden grey mullet indicating an isometric growth. The value b for carp was 2.89, indicating an allomertic growth. The maximum age of three species was 12 years. Von Bertalanffy growth equations were estimated as: for kutum: for golden grey mullet: and for carp: The sex ratio of three species showed that females were dominant. Spawning migratory of kutum was started in March. The gonadosomatic index value of kutum peaked in March and April. The spawning season of carp expended from March to August. The gonadosomatic index value of golden grey mullet peaked in September and then declined in November and December. Absolute fecundity of kutum, golden grey mullet and carp were 64400, 700800 and 131000 eggs, respectively. Length maturity (Lm50%) of three species were 39.07, 28.4 and 31.6 cm, respectively. The highest feeding intensity (Gastrosomatic index=GSI) for females and males were 313.9 ± 65.9 and 350.7±103.7 in October; and the lowest value of GSI were 19.4 ±59.2 and 144.1±85.04 in March, respectively. There are significant different between GSI with male and female in difference months (P〈0.05). Main prey mature of Kutum was Cerastoderma lamarki; Gastropoda and Balanus were subordinate, and Crab, Hypanis, Fish (Neogobous sp.) Algae, egg, and scale were random preys. Planktone groups comprise to Exuviaella, Nitzchia, Osillatoria, Synedra, Nematoda, Navicolla, Diatoma, Rholcosphenia were preys juvenile of Kutum. Based on ISI (Important species index), Cerastoderma lamarki and Balanus were dominant species in feeding of Kutum. The percent of empty stomach and prey dominant evaluated during different seasons by specific formula result showed that in Cyprinus carpio prey Molluscs was dominated and specific food items. Empty stomachs in winter and spring were higher and lower, respectively. The results showed that catch of kilka decreased from 22300 mt in 2006 to 16700 mt in 2008, but the CPUE increased from 1.7 mt (Vessel×Night) to 2.5 mt, due to decrease of effort, respectively. The length frequency of three species of kilka is close and the juvenile fish did not see in catch. The age frequency had the same situation as fish lower than 2 years was not in the samples of anchovy and bigeye kilka. The parameters of the von Bertalanffy growth curve were: For common kilka: L =136.5 cm, K=0.249 yr-1 and t0= -1.89 yr-1 For bigeye kilka: L =148. cm, K=0.346 yr-1 and t0= -1.123 yr-1 And for anchovy kilka: L =131.7 cm, K=0.375 yr-1 and t0= -1.243 yr-1 The exploitation rate of anhovy, bigeye and common kilka were 0.51, 0.58 and 0.6, respectively. The highest of GSI for common and bigeye was recorded in May and March, respectively. For anchovy kilka it was in July and November. Main prey of anchovy and common kilka was Acartia tonsa and for bigeye kilka it was Cypris balanus. We concluded that the ecological problems caused by Mnemiopsis leidyi as well as overfishing have been collapsed kilka stocks, particularly anchovy. Therefore, sustainable fisheries management and conservation biodiversity in the Caspian Sea are real challenges now.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Commercial ; Growth ; Species ; Kilka kutum ; Bonyfish ; Sex ratio ; Spawning ; Gonadosomatic ; Maturity ; GSI ; Hypanis ; Neogobous sp. ; Algae ; Nitzchia ; Cyprinus carpio ; Diatoma ; Clupeidae ; Rutilus frisi kutum ; Liza auratus ; Chalchalburnus chalcoides ; Vimba vimba ; Abramis brama ; Sander lucioperca ; Liza saliens ; Fish
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 98pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 16
    facet.materialart.
    Unknown
    Investigation of production possibility of monosex female and sterile fish in Rainbow trout Oncorhynchus mykiss (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This investigation carried out for the first time in Iran inorder to prodcution of monosex female and also sterilization in Rainbow trout. In this study, the eggs of general females were fertilized with the sperm of sex reversed male and so monosex female population was produced in second generation and sterilization carried out with oral administration of 17α methy 1 testosterone and immenrsion and oral administiration methods were used in embryonic stage and from commencing of acitve feeding of larvae, respectiverly. For sex reversal , 13 treatments were considered totally, that the most percentage of male (100%) was observedc in a treatment including of orally administration of 0.5 ppm hormone for 60 days after commencing active feeding (P〈0.001). In the other treamtnet, different percentages of sex ratio including male, female, intersex and sterility were observed. The offspring of genral eggs fertilization with the sperm of masculinized fish were 100% female, chisquare test was shown the treatment of orally administration of 30 ppm hormone for 120 days after commencing active feeding that had been considered for sterilization, was produced 90% sterile fish (P〈0.001) and was changed the sex ratio significancthy. Morphological changes of the gonads and sperm ducts in matured fish and also histological changes in the gonads of fish in the treamtints were considerable.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Morphological ; Histological ; Monosex ; Female ; Male ; Sterilization ; Rainbow trout ; Eggs ; Fertilized ; Sperm ; Population ; Sex ; Fish ; Oncorhynchus mykiss ; Rainbow trout
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 58pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 17
    facet.materialart.
    Unknown
    Feasibility on cage culture of the orange-spotted grouper (Epinephelus coioides ) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The present study was carried out to evaluate the possibility of rearing the orange-spotted grouper (E. coioides) juvenile to marketable size in buoyant cages in Khuzestan province coast waters. Juvenile fishes for the study prepared from Bandar-e-Imam Marine Fish Station and reared them in 5-ton fiber glass tank for one year period using common pellet feed and trash fish to reach 50 g mean weight. Young fishes were stocked in 6 rectangular cages (3×3×3 m) to assess their growth performance with two test feeds i.e. pellet feed and trash fish (3 cages for each treatment) with the density of 30 fish /m3 (810 fish/cage) for 143 days rearing period (started on July). Better growth with significant difference (p〈0.05) were observed for fishes fed trash fish (523.71±27.95 g) than those fed pellet feed (317.53±22.10 g). Although lower survival rate was recorded for fishes fed trash fish but difference with the pellet feed was not significant (p〉0.05). Results also showed that the FCR for the trash fish was acceptable, and hence it is recommended to consider the trash fish price and its labour cost befor using it as the main diet in cage culture activity.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Orange-Spotted Grouper ; Cage culture ; Trash Fish ; Pellet feed ; Growth ; Epinephelus coioides ; Rearing ; E. coioides ; Juvenile ; Survival rate ; FCR
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 41pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 18
    facet.materialart.
    Unknown
    Effect of salinity on spawning of Yellow fin sea bream (Acanthopagrus latus) in spawning tanks (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Salinity effects on brooders spawning, growth and survival rate of yellow fin sea bream (〈i〉Acanthopagrus latus〈/i〉) fingerlings was studied in Khouzestan Marine Fishes Research Station (Bandar-e Imam) in 2002- 2003. More than 200 brooders were caught in Mahshar creeks using hook, and 6 males and 3 females of brooders were introduced to each 4 tons tank. The experiments were carried out using 3 salinity treatments (30~c1, 35~c1 and 40~c1 ppt) in 3 replications. Survival rate of brooders in 4 tons tanks during late January to 4〈super〉th〈/super〉 April was estimated more than %90 in all salinities and the maximum rate was observed in 30 ppt treatment. Spawned brooders percentage in 40 ppt was more than the two other salinities, and spawning occurred in all three replications of this treatment. In all treatment, spawning started from early march (late lunar month) at 19~'C and continued at 23~'C. Duration and replication of spawnings in 40 ppt were more than other salinities, and last about 20 days. Released eggs (2461046), amount of eggs production per day (66413), average number of eggs per brooder (312914), and average eggs per kg body weight (649460) were found in 40 ppt more than other salinities. Floating eggs ratio was more than %90 in 40 ppt and it was significantly different to the others. Fertilization and hatching rates in 40 ppt treatment (86.7, 67 respectively) were more than 30 and 35 ppt but there was no significant difference. All spawnings cases , released eggs hatched.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Salinity ; Spawning ; Yellow fin ; Bream ; Acanthopagrus latus ; Propagation ; Density ; Survival rate ; Fingerling ; Growth ; Acanthopagrus latus ; Yellow fin sea bream
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 55pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 19
    facet.materialart.
    Unknown
    Monitoring of use possibility of edible films ( whey protein, sodium alginate and mix of them) for cleaned Kilka packaging (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Nutritional ; Chemical ; Economical ; 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: Report , Refereed
    Format: 109pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 20
    facet.materialart.
    Unknown
    The Creation of genetic basic population of Rainbow trout((Onchorhynchus mykiss) based on Study of genetic variation in brood stocks using microsatellite (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In order to perform the project, 446 samples of rainbow trout (Onchorhynchus mykiss) from 24 different regions in Iran were collected. About 2-3 g of caudal fin samples was collected from each specimen and preserved in absolute ethyl alcohol and then transferred to the genetic laboratory. Genomic DNA was extracted using the phenol-chloroform method and then DNA content and quality was determined using spectrophotometry and agarose gel electrophoresis, respectively. Polymerase Chain Reaction (PCR) of genomic DNA fin samples was carried out using 10 pairs of microsatellite primers. All PCR products were electrophoresed on 6% polyacrylamide gel and stained with silver nitrate. Following the scoring of alleles, all parameters including allelic frequency, effective number of allele, observed and expected heterozygosity, shanon index, measurement of similarity and genetic distance and Hardy-Weinberg equilibrium, Fst , Rst and gene flow were calculated using AMOVA analysis in the GenAlex and Popgene programs. The results showed that 8 pairs of microsatellite primers were polymorphic. In total, 50 alleles were determined with the range size of 64-280 bp. The locus omyf had maximum number of allele (26) and loci OTSG 474 and Strurruta58 had minimum number of allele (5). The observed heterozygosity was between 0.86 and 0.964. Hardy-Weinberg departure was observed for all loci from farms 18, 15, 4, E20 and 21 and were disequilibrium (P〈0.05). The farms 14, 8, 7 and 6 were equilibrium at 3 loci, but showed disequilibrium in other loci. The other farms were equilibrium at 1 or 2 loci and disequilibrium at 8 or 9 loci. The FST results showed that maximum FST (0.24) were between farms 1 and 11in which had minimum of gene flow (3.7). Minimum FST (0.04) were between farms 8 and 9 in which had maximum of gene flow (346). Based on the results of AMOVA analysis, significant differences were detected between all farms (P〈0.01). Furthermore, based on Nei 's standard (1972) maximum genetic distance (0.89) were observed between farms 2 and 11 and maximum genetic similarity (0.15) were detected between farms 3 and 4. This result suggests that the unique genetic variation of rainbow trout in hatchery farms of Iran represents a highly valuable genetic resource and provide useful information for creating a based population in the future breeding programs.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Genetic ; Population ; Rainbow trout ; Onchorhynchus mykiss ; Brood stocks ; Microsatellite ; Samples ; Specimens ; DNA ; PCR ; ANOVA
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 78pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 21
    facet.materialart.
    Unknown
    Evaluation of stocking density vannamei shrimp Litopenaeus Vannamei (Boone, 1931) in cultuering with brackish water of Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Recently, the development of aquaculture has focused on the use of seawater, because of freshwater crisis in the world. Whiteleg shrimp (Litopenaeus Vannamei) is one of the most important species for aquaculture development, because of tolerance and adaptation to different ecological conditions. One of the advantages of species in aquaculture, compatibility status is dense in the rearing period. In this study, the effect of different densities (45/m2 , 50/m2 , 55/m2 and 60/m2 ), of primary stock whiteleg shrimp postlarvae (PL12) on the growth and survival rate were evaluated. Brackish water (10.52±0.43 ppt) was providing from Caspian Sea. The experiments were performed in 12 circular concrete pond with a sandy bed (area: 78m2 ) in four treatments and three replications for each treatment. The experiments performed in a 75-day period. In this study, the water temperature was 27.4±1.79°C. The results showed statistically difference in growth parameters and survival rate among experimental treatments (Duncan test, P〈0.05). Therefore, with high levels of density, has decreased the amount of weight gain and survival rate (SR), specific growth rate (SGR) and average daily growth (ADG). In addition, the treatments were different variations of FCR (P〈0.05) and not depend on the primary stock density of postlarvae. In low density (45/m2 ) were observed the highest growth (SGR=11±0.04 and ADG=0.25±0.01 gr/day/ind.), survival rate and calculate the amount of production per 78m2 equal 43.6±3.3kg (5596±433kg/ha). Therefore, It is possibility that there is commonly increasing primary stocking of density about L. Vannamei postlarvae culture in Iran.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Ecological ; White shrimp ; Litopenaeus vannamei ; Brackish water ; Growth ; Survival ; Aquaculture
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 34pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 22
    facet.materialart.
    Unknown
    Investigate effects of temperature, salinity, light duration, density and cannibalism on growth and survival of tilapia larvae in brackish water, Bafq (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This project was conducted in five independent experiments in appropriate tanks with suitable aeration and water fellow. Temperature: an experiment designed to evaluate the effect of temperature on growth and survival of tilapia fry by using four thermal regimes consist of 22, 25, 28 and 31 °c in three replicates. Fries with initial wight of .014 g were stocked in plastic container with 10 liter capacity at the rare of 5/liter. Fish were fed on rainbow trout commercial food at a rate of 30 % of biomass 5 times per day. The results showed that some growth indices such as final body weight, daily growth rate, specific growth rate and weight gain increased by increasing water temperature significantly. Although fry survival increased by increasing temperature but these differnces were not significant. the results suggest that in larviculture of Nile tilapia water temperatue should not be less than 28°c. Density: compressibility of Nile tilapia fry was studied by using plastic container with 13 liter capacity. Fry with initial weigh of .034 g were stocked in four treatments 10, 15, 20 and 30 fry/l with four replicates. They fed on rainbow trout food according to their biomass five times per day during the light period. The results showed that some growth indices such as average of final body weight, daily growth rate, specific growth rate and survival decreased by increasing stocking density significantly, while feed conversion rate increased by increasing stocking density. Considering the experiment, it could be suggested that lower stocking density (10/l) resulted the best growth efficiency and survival of Nile tilapia fry. On the other hand, compering the results of growth and survival rate(84%) in two stocking densites(15 and 20/l) showed that it is passible to culture Nile tilapia fry at the stocking density of 20fry/l in suitable condition. Salinity: A study conducted to evaluate the effect of salinity on growth and survival rate of Nile tilapia fry by using six salinity levels (0, 4, 8, 12, 16 and 20 ppt) with three replicates. Fry fed on rainbow trout food five times per day during the light period. Results showed that some growth indices such as average of final body weight, daily growth rate, specific growth rate and survival rate increased by increasing salinity levels up to 8 ppt significantly, and then decreased by increasing salinity levels up to 20 ppt. according to the experiment, it seems that larviculture of Nile tilapia in brackish water is available and the best results achives at 8 ppt. considering the results of growth and survival rate at 16 ppt showed that Salinity up to 16 ppt was tolerable, although reduced the growth and survival of Nile tilapia fry. Photoperiod: the objective of this study was to examine the effects of photoperiod on growth and survival rate of Nile tilapia fry by planning four treatments (6L:18D, 12L:12D, 18L:6D and 24L:0D) and four replicates. Light provided by tow fluorescent lamps those set at a distance of 60 cm above the tanks and worked by an automatic timer. Fry fed on rainbow trout food five times per day. Results showed that average of final body weight, daily growth rate and specific growth rate were loest in 6L:18D and these indices increased by increasing light duration. these differences were not significant among 6L:18D and 12L:12D. but the differences between 6L:18D with 18L:6D and 24L:0D were significant. Evaluation of survival rate showed that photoperiod did not significant effect on survival in all treatments. These finding suggests that a 12L:12D cycle be adequate in case of larval rearing. Cannibalism: An experiment designed to determine the occurrence of cannibalism among 5 different size groups of (5, 10, 20 and 30 g with fry 0.45 g) Nile tilapia population (fry / fingerling) under two stocking densities (1 / 2 and 1 / 4 fingerling / fry) with three replicates in the poly etilen tanks in brackish water condition. Fry were counted at 6, 24, 48, 72, 96, 120 and 144 hours after stocking in two methods (feeding and no feeding). In the feeding trial fingerling were fed on rainbow trout food two times per day. The results showed that cannibalism became more intense as the size difference increased. After passing time cannibalism rate increased. Also results showed increasing fry density causes increasing cannibalism in both treatments (feeding and without feeding). Feeding fingerlings (predator) was effective in reducing cannibalism.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Oreochromis niloticus ; Fry ; Temperature ; Stocking density ; Salinity ; Photo period ; Cannibalism ; Brackish Water ; Growth ; Survival ; Tilapia ; Larvae
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 48pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 23
    facet.materialart.
    Unknown
    Comprehensive study on assessment of Sturgeons population genetic structure in the Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The population genetic structure of five Caspian Sea sturgeon species was investigated. Totally 1121 samples of caudal and unault's fin tissue of the sturgeons (Acipenser persicus, A. gueldenstaedtii, A. stellatus, A. nudiventris and Huso huso) were collected from the Volga River (Russia), Ural River (Kazakhstan), Kura River (Azerbaijan), Sepidrud River and the coastline of the south Caspian in the Iranian waters as well as from the sampling stations selected for the marine survey for sturgeon stock assessment in the Caspian Sea. All samples were stored in 96% ethyl alcohol and transferred to the genetic laboratory of the International Sturgeon Research Institute. Genomic DNA was extracted using phenol-chloroform method. The quality and quantity of DNA was assessed by Agarose gel (1%) electrophoresis and spectrophotometry. The population genetic structure of Ship and Persian sturgeon was studied using both PCR-RFLP (D-loop and ND5/6 gene) and microsatellite technique and that of H. huso, A. stellatus and A. persicus were studied using microsatellite technique. After amplification of genes using PCR, the RFLP technique was used to digest mtDNA using restriction enzyme. The PCR products were electrophoresed on 6% sequencing polyacrylamide gels followed by silver nitrate staining. Data for PCR-RFLP were analyzed using REAP program and those from microsatellite technique were analyzed using Gene Alex. Population genetic parameters including allele frequency, expected and observed heterozygosity, effective allele, Shannon's index were determined. Genetic identity and distance were calculated following Nei criteria and Hardy Weinberg equilibrium was tested based on X2 and analysis of molecular variance (AMOVA) using Reap and Gen Alex at 99% confidence limit. Phylogenetic relationship was determined and drawn using TFPGA program. The population genetic structure and genetic diversity of the 1121 sturgeon specimens were determined. Three independent populations were identified for Acipenser persicus (two populations in the south Caspian in the Iranian waters and one in the north Caspian). Three independent populations were identified for A. gueldenstaedtii (Volga, Ural and South Caspian populations) using the microsatellite technique. Population genetic structure using PCR-RFLP revealed no genetic differentiation among the A. gueldenstaedtii specimens studied from the different regions using ND5/6 gene, while two populations (Ural and south Caspian populations) were detected for this species with the same technique using D-loop genes. Four independent populations (Volga, Ural, Kura and Sepidrud populations) were reported for A. stellatus using the microsatellite technique and four more populations which most probably belong to the autumn and spring races of the above mentioned independent populations were identified for this species. The present study also identified two populations for H. huso; The North Caspian population (in Volga and Ural Rivers) and The South Caspian population (in Golestan and Guilan regions) which were significantly different from each other (P〈0.01). The genetic population structure of A. nudiventris was studied using the microsatellite and PCR-RFLP techniques which revealed two populations for this species one in the Ural River and the other in the Sepidrud River (South Caspian). Comparison of the ND5/6 and D-loop genes studies in Russian sturgeon revealed that the D-loop gene is better than the ND5/6 genes in population's differentiation and is therefore strongly recommended for population genetic studies on sturgeons in the Caspian Sea. Genetic diversity studied using microsatellite technique was higher and more accurate as compared to that using RFLP. Nevertheless the RFLP technique was able to introduce molecular markers for the population’s species pacific identification. On developing suitable primers these studies can be speeded up and the cost of such studies can be cut down. However the drawback in using microsatellite technique for population genetic studies is that it cannot introduce a molecular marker for the identification of populations. The present study was able to introduce molecular markers to differentiate the ship sturgeon population in the south Caspian from that in the Ural River using the PCR-RFLP technique Based on the results obtained it is strongly recommended that all activities related to restocking and rehabilitation of sturgeon stocks in Iran be conducted on the basis of genetic principles. Also serious and immediate measures should be taken for the restoration and conservation of rare population of native species of Iran particularly in the Sepidrud region using genetic markers before they are become extinct.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Assessment ; Sturgeons ; Population ; Genetic ; PCR-RFLP ; Microsatellite ; Species ; Samples ; Tissue ; Acipenser persicus ; A. gueldenstaedtii ; A. stellatus ; A. nudiventris ; Huso huso ; Survey
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 329pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 24
    facet.materialart.
    Unknown
    Investigstion on Effect prepared vaccine by Y-ray on production rate and resistance to white spot disease in Shrimp Litopenaeus vannamei (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: White Spot Disease (WSD) is a important disease due to economic impacts in shrimp industries. Spreading of this disease in shrimp farms can caused a 100% mortality during 3-10 days. Therefore control of this disease is a strategy in shrimp industry. Vaccination is a way to control of WSD. In several years ago during a project several type vaccine of this virus by association of Atomic Energy Organization is produced that among of them the virus inactivated by GAMA radiation had better results in laboratory. To test of this vaccine in field, a research pilot was carried out. Initially 20000 shrimp napliies were obtained from one of commercial hatchery in Bushehr province, then devided to two groups vaccinated and unvaccinated. The vaccinated group also devided . 26and PL12 , group B vaccinated at PL15and PL 5to two groups, group A that vaccinated at postlarva e (PL) Rrsults showed that difference of growth performance and survival rate between vaccinated and unvaccinated without challenge with WSV after 80 days is not significantly (P〈0.05). but survival rate in vaccinated groups after challenge with WSV was significantly (P〈0.05) further the unvaccinated group. Also the results showed survival rate of group B after challenge with WSV is better than group A and this difference was significantly (P〈0.05). this study showed vaccination of shrimp postlarvae with GAMA radiation vaccine can control of shrimp mortality in incidence of WSD in farms.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Litopenaeus vannamei ; WSSV ; Gamma radiation ; Vaccination ; Y-ray ; White spot disease ; Shrimp ; Nauplii ; Growth ; Survival rate ; Mortality
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 65pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 25
    facet.materialart.
    Unknown
    Investigation of chromosome and ploidy levels of Rainbow trout produced from imported eyed eggs. (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Rainbow trout is the main cultural species of coldwater fishes in iran. Often, aquaculturists intend to breeding in order to production of lines with higher growth rate potential and disease resistant. Nevertheless in the country, no trout breeding programs, has been performed yet and most of the farms focused on the cultivation of the first(unbred) race. While European countries progressed in trout breeding techniques and production lines with higher growth through genetic manipulation (chromosomal number and type changes of fish) and/or selection and their fish products derived from this technology, including eyed eggs and so on have sold to other regions of the world(eg: Iran). In this study, some biological parameters including survival, growth, feed conversion ratio (FCR.) and chromosomal number of two juvenile groups from imported( group 1) and native(group 2) eyed fish eggs were compared. For chromosomal investigation, blood smear test and flow cytometry were performed. sults showed a significant difference (P≤5%) in growth rate of native fishes and French group Native fish feed conversion ratio (0.9) was significantly difference (P≤5%) from that of French fishes (1.15). Chromosomal analysis showed no difference in chromosome number in treatments and two fish groups were 2n chromosome. Based on the results,the fishes of group 1 had faster grow potential and gain weight in less time than that of group 2 and this has been achieved to go through the process of selection and femenizatiom without any change in number of ploidy. Whereas the ability of native fishes in food efficiency( lower FCR.) was better. However, the reduction of rearing period is the benefit and preference of cultivation of imported or origionally foreign.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Imported eyed egg ; Native fish ; Ploidy level ; Growth ; Rainbow trout ; Chromosome ; Species ; Breeding ; FCR
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 30pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 26
    facet.materialart.
    Unknown
    The investigation and morphological study of two type of Crass carp : Ctenopharyngodon idella and survival rate of their larvae (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The two groups of grass carp, have been propagated in North and South fish farms and then the larvae were transferring to Abziroshd and culture fish farm of Mazandaran. The fingerling at eight weight classes of 2 to 500 gram were investigated morphologically and some morphometric and meristic were compared. The South grass carp was significant difference (P〈0.05) with the North, in case of weight with the same length, number of vertebral and gill raker. The coefficient of variance (CV) of meristic characters of South Grass carp was in the range of 1.2 to 9.8 while in Mazandaran grass carp 2.8 to 8.6. This CV illustrate the low variance in both population. This research study showed that the two stocks can be regard as difference races from one ancestor.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Meristic ; Morphometric ; Grass Carp ; Population ; Investigation ; Survival rate ; Larvae ; Ctenopharyngodon idella
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 33pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 27
    facet.materialart.
    Unknown
    Species composition monitoring in artificial reefs area in Khuzestan coastal waters (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was carried out in continuation of previous studies on artificial reefs monitoring in Khozestan coastal waters. The main purpose was the zoo species composition on and around the artificial reefs. Sampling was done from May 2012 to April 2013, from 4 stations in artificial reefs area. Reef structures were sampled by scuba diving. Physical and chemical parameters were measured and water quality status was determined by using WQS index. Zooplankton and macrozooplankton communities were sampled by 100 and 300 micrometer mesh size nets respectively. Benthic animal's samples from sediments around of the reefs body were collected by Ekman grab. Sediment characters, TOM and grain size were analyzed by using ignition loss and size series sieves methods respectively. Secondary production of macrobenthic animals based on dominant species length classes was estimated. Ichthyological information recorded by diver (census and video recording) and Gargoor traps were used for fishing effort calculation .Except for nitrite parameter (p〈0.05) in different stations and silica parameters (p〈0.05) in different months, other parameters were not shown significant differences in studied stations and months. The mean of zooplankton density was (914±52) N/m3 and the Copepoda species were the most abundant group (235 ±10) N/m3.Anosim analysis showed no significant differences in reefs specie composition. Different Crustacean groups were included more than 82 percent of macrozooplanktons communities. Among macrozooplankons, the mean density of decapoda, branchiopoda and copepoda were 302, 296 and 191.5 N/m3 respectively. The mean density of macrobenthic animals was 418±90.26 N/m2 and mollusk, crustacean and polychaets were the most abundant benthic animals respectively. During the study period, total macrobenthos biomass 11.37 g-wet/m2 and its mean value 2.84 g -wet /m2, were estimated. Annual production for polychaets and crustacean groups 154g-wet/m2 and 182 g-wet/m2 were estimated respectively. Annual production of total macrobenthic animals was about 675 g-wet/m2/y. According to sediment analysis, the range of silt-clay (8.7-95.6)% and seasonal mean TOM (4.47-13.25)% were calculated in studied stations. According to attached organisms biomass (wet weight), Cnidarian Anthozoa class with (88)% was the most abundant and then sponge (10)%, Cnidarian Hydrozoan class and arthropoda each one with 1% were included total attached organisms. Due to high biomass of Anthozoa species the most abundant mean was observed in spring season. The Malacostraca group especially Crustacean (72)% was the main mobile animals on reef bodies and then Echinodermata (Ophiurida and marine Orchids) (18)%, Mollusca (Bivalves and Gastropods) (4)% and Polychaets (3)% were the main mobile organisms. The range of Shannon diversity index was (3.22-3.46) and (2.44-3.38) in studied stations and months respectively.Totaly in studied area, the number 15 fishes species were observed and Sparidae family with 3 species were the diverse fish family.The fish Hamour (Epinephelus coiodes,Seranidae) (87)% was presented in all studied months and stations. After Hamour the Neopomacentrue sindensis and Diplodus sargus Kotschyi were the most abundant fishes. The maximum and the minimum of hamour catch per unit effort were in reef B in spring and reef C in autumn respectively .Data comparing showed that except for nitrite the other physical and chemical parameters were observed in the same range by 2005-2007 study. According to obtained results, Zoo communities in different part of ecosystem showed greater diversity than to past years and in comparing to mudflat coastal waters in Khozestan waters, new ecosystem has been created in the region. High diversity of different animal groups that were disperses in water column in early phases of its life and need to settlement to substrate to continuing the life were observed in area. Attached animals plays an important role in biological and ecological characters in the coastal area.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Chemical ; Ecological ; Biological ; Species ; Artificial reefs ; Sampling ; Zooplankton ; Fishing ; Macrozooplanktons ; Decapoda ; Branchiopoda ; Copepoda ; Polychaeta ; Sponge ; Anthozoa ; Mollusca ; Bivalves ; Gastropods
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 134pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 28
    facet.materialart.
    Unknown
    Epidemiological study on some environmental and management parameters affecting on WSD occurrence in Fenneropenaeus indicus and Penaeus vannamei (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Environmental ; Physical ; Chemical ; 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: Report , Refereed
    Format: 468pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 29
    facet.materialart.
    Unknown
    Estimation of production potential in lake behind the Halilrud dam in Jiroft city (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In order to the physical and chemical factors, planktons identification, determination of Chlorophylla and primary production in lake on study wad conducted, behind the Halilrud dam in Jiroft city. For this purpose 5 station selected and sampling was performed seasonally. Compersion of physical, chemical factors and planktons were done by duncan multiple test range. Studied factors had the suitable value for fish culture. In classes of Chrysophyceae, Bacillariophyceae and, Chlorophyceae had the most frequency respectively. Totally 49 phytoplanktons genus were identified which 18, 14,8,5 and 3 genus were related to Chlorophy ceae, Bacillariophyceae, Cyanophyceae, Dinophyceae and Chrysophyceae, genus respectively. Nitzchia and Navicula in Bacillariophyceae, Chlorococcum, Pediastrum, Staurastrum and Tetradron in Chlorophyceae, Spirulina, Chroococcus, Phormidium in Cyanophyceae and Dinobryon in Chrysophyceae had the most frequency. From Various group of zooplankton, Copepoda, Naplius, Cladocera, Rotifera (Brachinus, Keretella), Trichuridae were identified in winter season and Rotifera was the most of all. Chlorophylla had not significant difference in 9 seasons but it had significan difference in 5 depthes. Increasing in depth causes to decrease chlirophyla. The most chlorophylla was in 0.5m depth (4.7 mg/m3 ) and the least chlorophyllla was in 20m depth(0.82mg/m3) primary production in lake was calculated by chlorophylla equal to 154 kg/ha/year.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Chemical ; Phytoplankton ; Zooplankton ; Fish ; Chlorophyll a ; Planktons ; Chrysophyceae ; Bacillariophyceae ; Chlorophyceae ; Dinophyceae ; Nitzchia ; Zooplankton ; Copepoda
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 68pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 30
    facet.materialart.
    Unknown
    Assessment of different methods of water treatment on decreasing pathogenic bacteria in shrimp hatcheries (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The project of "Assessment of different methods of water treatment on decreasing pathogenic bacteria in shrimp hatcheries" achieved by mean of reviewing the effectiveness of various methods on the water treatment to reduce bacterial load of sea water. The project performed in Bandargah region of Bushehr province in order to checking the effect of different methods on the sea water and bacterial population. This project has been done over a year. In this study a total of 138 samples was collected during seven times and was evaluated as well as 7 treatments. In this study, the comparison of the effect of each factors (sand filter, chlorine, ultra violet ray, chlorine combined with ultra violet ray) was analyzed on the sea water by means of disinfection. During this study, other environmental factors such as water temperature, dissolved oxygen, pH and salinity was measured till we can ensure that they don’t have any negative impact on the treatments. Results showed that the density of total bacteria in sea water (Control) was averagely 5187 CFU/ml, this was done while the total density of bacteria in the sea water, reservation pool sample, sand filter water, water that irradiated with ultraviolet rays, chlorinated water and the water that was influenced by both chlorine and ultra violet ray was respectively 5187 2137, 4449 2042, 2782 1335, 1164 692, 143 104, 87 76 CFU/ml. Therefore, reservation pool, sand filter, ultra violet ray, chlorine, chlorine-ultra violet ray each of them was reduce respectively 14, 46, 77, 97, 98 percent of the density of total bacteria or in other words they reduced 0.06, 0.27, 0.65, 1.56, 1.77 log of the total population of bacteria in water. Moreover, the results from the total count of vibrios showed that reservation pool, sand filter, ultra violet ray, chlorine, chlorine-ultra violet ray each of them was reduce respectively 17, 47, 74, 98, 99 percent of the density of total vibrios or in other words they reduced respectively 0.08, 0.27, 0.59, 1.66, and 1.95 log of the total population of vibrios in sea water. Also the bacteria that isolated from each treatment were identified with the use of biochemical methods that totally were includes a wide range of bacteria, the identified vibrios were: Vibrio alginolyticus, V. costicola, V. fischeri, V. fluvialis I, V. fluvialis II, V. harveyi, V. natriegens, V. nigripulchritudo, V. parahaemolyticus, V. plagius I, V. vulnificus, V. anguilarum I, V. campbellii, V. nereis, V. proteolyticus, V. splendidus, and Unknown V. spp. Other identified bacteria belonging to the following genus: Acinetobacter, Aeromonas, Alcaligenes, Bacillus, Borkholderia, Eschricia, Enteroacter, Flavobacterium, Micococcus, Proteus, Pseudomonas, Serratia, Staphaphylococcus, Streptococcus, and Unknown Bacteria spp. By comparing the results, we concluded that the best result was related to treatment that the sea water had been disinfected after the combined effects of chlorine and ultraviolet ray. It was determined that this process in compared with other treatments, had been reduced the total number of bacteria, the total number of Vibrios, the number of sucrose fermentative vibrios, and the number of non-sucrose fermentative vibrios respectively 98, 99, 98, 99 percent. In other words, the number of bacteria was reduced respectively 1.77, 1.94, 1.82, 2.23 log. So in this study, the applied method was introduced as the most effective way of disinfecting sea water. Meanwhile, none of pathogenic bacteria for shrimp including Vibrio harveyi was isolated by using this treatment. Comparing the results showed that the combined effects of chlorine and ultraviolet radiation is the most effective applied method for disinfecting sea water.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Shrimp ; Water treatment ; Sea water ; Bacteria ; Hatchery ; Assessment ; Population ; Temperature ; Dissolved oxygen ; pH ; Salinity
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 84pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 31
    facet.materialart.
    Unknown
    The effect of thyroxine (T4) on prematurating in female, on survival percent, growth and development of egg and larval in rainbow trout, grass carp, silver carp and barbell of Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Studies show that thyroxine can play an important role in regulating growth and other physiology activities. Since the direct role of thyroxine in growth metamorphose larval of bony fishes hasn't been proved yet, during the experiment accomplished in Shahid Ansari and Jajrood station, the hormones function in the survival of development of silver carp, grass carp and rainbow trout were studied. In this study accomplished of thyroxine baths with 0.1, 0.5 and 1 ppm (with 3 repeat). The other phase, thyroxine injected to females grass carp, silver carp, rainbow trout and barbell of Caspian Sea with different doses (1, 10 and 100 g/g B.W.). Tehn survival of development of embryo and larval and precent of fertilization were studied. Also, the percent of mortality were compared in two phases in stages of development. Result show that: 1) Trout: a)Phase of thyroxine bath: The number of hatching eggs and survival of larval in 0.5 ppm were increased to other treatment. b) Phase of hormone injection : The survival of larval in treatment of 10 g/g was 8.58% that was meaningful difference to other treatment (P〈0.05). 2) Silver carp: a)Phase of thyroxine bath: The number of hatching eggs and survival of larval in 0.5 ppm were ( 20%) increased to other treatment (P〈0.5). b) Phase of hormone injection : The survival of larval in treatment of 10 g/g was meaningful difference to other treatment (P〈0.05). 3) Grass carp : a)Phase of thyroxine bath: The number of hatching eggs and survival of larval in 0.5 ppm were 39% increased to other treatment. b) Phase of hormone injection : The survival of larval in treatment of 1 g/g was meaningful difference to other treatment (P〈0.05). 4) Barbel of Caspian Sea: Development stages wasn't determined in this fish. Number of eggs degenerated , number of eggs were the first development stages and growth of numbers increased on ovary.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Thyroxine ; Female ; Survival ; Growth ; Egg ; Larval ; Grass Carp ; Silver Carp ; Thyroxine (T4)
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 39pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 32
    facet.materialart.
    Unknown
    Study of fish consumption per capita per year in rural and urban areas of Markazi Province, Iran (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Survey method has been performed using questionnaire forms for study of fish consumption per capita per year in Markazi Province due to lack of enough data on this field in the said province. Each questionnaire was completed by asking questions from each of the families as a statistical population sample either in rural or urban areas. According to the national census in year 2008 by Iranian Statistical Center, there are 364564 families living in Markazi Province out of which 207802 (57%) families are urbanites and 156762 (43%) are ruralist. A sample with total population of 2525 families were chosen with 1455 families living in urban and 1075 families in rural areas. Systematic random sampling was adopted in both areas which show people consuming fish once in 25 days with 5.8 Kg as per capita and per year for the whole Markazi Province.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Consumption ; Statistical population ; Consuming fish ; Rural areas ; Urban areas ; Survey ; Capita ; Population ; Sample
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 202pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 33
    facet.materialart.
    Unknown
    Determination of dietary requirements of Acipenser persicus from larval stage to market (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Growth experiments were conducted in a random statistical design to determine the dietary requirements of Persian sturgeon, Acipenser persicus. In this study the effects of various dietary protein and energy and their optimum P/E proportion in diets was estimated on growth and carcass composition in A. persicus in the fingerling and grow out stage in three different phases. In the first phase, 16 semi pure diets with 4 protein levels (35, 40, 45 and 50%), each with four energy levels (18.5, 19.8, 21.1 and 22.4 megjoules/kg diet) and P/E proportion of 15.63 to 26.4 mg protein KJ-1 were formulated and fed to 960 A. persicus fingerlings, with a mean weight of 10.26±0.11 for 112 days. Three replicates were used for each experiment group. In the second phase, 432 A. persicus juveniles with a mean weight of 112.25±1.187 g were fed 12 semi purified diets with 3 protein levels (40, 45 and 50%) each with 4 energy levels (18.5, 19.8, 21.1 and 22.4 megjoules/kg diet) and P/E proportion of 18.9 to 26.4 mg protein KJ-1 for a period of 101 days using three replicates for each treatment. In the third phase, 384 juvenile A. persicus with a mean weight of 803.26±3.5 g were fed 16 diets for a period of 140 days. Two replicates were used for each treatment group. At the end of the experiment 30% of the fish population was randomly selected for carcass analysis to determine protein, lipid, moisture and ash content. Hepatosomatic index of the fish specimens was also determined. In the fingerling stage the fish fed 45 and 50% protein with 22.4 megjoules/kg diet energy exhibited the best growth indices [final body weight, percentage body weight increase (BWI%) and specific growth rate (SGR)] (P〈0.05). A diet containing 40% protein and 22.4 megjoules/kg diet energy with P/E ratio of 17.86 mg protein KJ-1 is the recommended diet for A. persicus in this stage. In the first phase higher growth rates were observed in fish fed diets containing 40% protein as compared to those fed diets containing 45 and 50% protein. Increasing energy levels to 21.1 and 22.4 megjoules/kg diet significantly increased (P〈0.05) growth indices. Highest values for growth indices belonged to fish fed diets containing 40% protein, 22.4 megjoules/kg diet energy and P/E ratios of 17.86 mg protein KJ-1. Final weight, BWI% and SGR in fish fed diets containing 40% protein were higher as compared to fish fed diets containing 35, 45 and 50% protein. Increasing energy levels to 22.4 megjoules/kg diet resulted in significant increase in growth indices as well as P/E ratios. Highest growth indices were recorded with diets containing 40% protein, 22.4 megjoules/kg diet energy and a P/E ratio of 17.86 mg protein KJ-1. Results obtained indicate that A. persicus showed better growth rates after acclimation to formulated diets, and therefore can be considered a suitable species for culture in captivity. On the basis of growth rate and carcass composition diet containing 40% protein, 20.1 to 25.9% lipid with a P/E ratio of 17.86 mg protein KJ-1 prepared from good quality fishmeal, fish oil and vegetable oil (sunflower or soybean oil) is recommended for feeding A. persicus in the fingerling and grow out stages.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Acipenser persicus ; P/E ratio ; Growth Rate ; Carcass composition ; Hepatosomatic index ; Persian sturgeon ; A. persicus ; Fingerlings ; Population ; SGR ; Species ; Fish oil
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 98pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 34
    facet.materialart.
    Unknown
    Stock discrimination of Rutilus rutilus by using Otoliths (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Trace elements incorporated into growing surface of the fish otoliths. It reflects the physical and chemical characteristics of the ambient water. Since otoliths grow continuously without re-absorption throughout the life of the fish, fish population growing up in different elemental composition. Trace element concentration in fish otoliths was analyzed by proton induced X-ray emission (PIXE). Otoliths were collected from Rutilus rutilus, during 1999-2000 in the eastern part of Caspian Sea. Ca, K, Sri Cu, Zn and Br in the otothis can be detected by using PIXE our results inform K, Sr, Fe, Zn as marker of this study. Therefore, in the two different conditions, separate 'age classes and without separate age classes, Astara and Turkmen regions were discriminated. Comparison of mean age in the different area show, deference of mean age is significant in the Astara and Turkmen.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Chemical ; Stock discrimination ; Rutilus rutilus ; Otoliths ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 77pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 35
    facet.materialart.
    Unknown
    Investigation of Indian white shrimp ( penaeus indicus ) Populations in west and East of Jask area by genetical method (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The objective of this investigation was molecular study of Penaeus indicus population from Jask area. Samples were collected using bottem trawl net from three regions, East, West and Central Jask. DNA were extracted using phenol - chloroform method from muscular tissue. To investigate population differences of P. indicus, the specific primers were designed by sequence of Cytochrom oxidase I (CO I) gen in mtDNA molecule. PCR was performed using two spesific primers and the reasonable result achieved (600bp) for all samples. The PCR products of samples were digested by restriction endonuclease enzymes such as (Alu I, and followed by polyacrilamid gel Taq I, Hinf I, Rsa I, Dde I, Hinc II, Hind III, Hpa II, Ecor I, Pvu II) Observed by silver nitrate staining method. electrophoresis (PAGE) The bands of DNA were the same in all samples and the results indicated no polymorphism between samples. These results may suggested that cytochrom oxidase I gen in Penaeus indicus is a conserved gen or numbers of restriction endonuclease enzymes enough for the study of genetic variations in or all samples are belong to a single genetic population and was no possible for isolation of different genetic populations in this specie. Maybe the East, West and Central Jask are not sofar from eachother and absence of any Human made or different Biology in these sites are expected and no changes in genetic level.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: mtDNA ; PCR ; RFLP ; Penaeus indicus ; Gentic variation ; Cytochrom Oxidase I ; Molecular ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 54pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 36
    facet.materialart.
    Unknown
    Investigation population changes of sturgeon in the southern coastal waters of the Caspian Sea (Mazandaran province) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In present research work, variation and distribution of Sturgeon fishing lower depth of 10 meter of Caspian Sea were investigated. The CPUE and the population structure, such as total length, fork length and weight during 2003-2005 in southern part of Caspian sea were recorded. In 2003-2004, the total number of 300 fish were sampled including Acipenser Persicus 244 A.stelatus 35, A. nudiventris 120, A.goulden stadti, 9 . In the period of the next year (2004-2005) 412 Fish were lollected, consist of A. persicus 370, A.stelatus 14, A. nudiventris 8, A. goulden stadti 19, and one Huso huso. The CPUE (in night) in 2003-2004 For A.persicus, A.stelatus, A. nudiventris, A. gouldenstadti were 4/05 , 0/58, 0/20 and 0/15 respectively, where as it was 6.17 for A. persicus 0.23, A.s 0.13, A.n 0.13, A.g and 0.02 for Huso huso. The mean total length For 2003-2004 of A. persicus was 26 ± 10.86 cm A.s 49.7± 14.5, A.n 38±13.79 A.g 43.1± 10.25cm. In 2004-2005 it was 21/0±18.56, 52.5±25.53, 30 ±13.09 , 23.37 ± 12.2 and 50cm for A.p, A.s, A.n, A.g, Huso huso respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Investigation ; Population ; Sturgeon ; Coastal waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 75pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 37
    facet.materialart.
    Unknown
    Several fish species carp culture with Chinese black carp to increase diversity in warm water fish farms (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The objective of this study was to investigate the effects of black carp introduction in chines carp poly culture as well as its effect on the growth, survival rate and production of chines carp species. This study conducted in two consecutive year. The period of culture in first year was during Jun 1 until Des 5 ,2009 and in second year it was from Jun 4 to Dec, 1,2010 .The experiment were started by selecting 9 earth end pond each with 800 m2 area and was performed in triplicate with 2 treatment and one control , each year .The ponds were treated by liming and fertilizer before filling water and then stocked with 3000 chines carp ( 140 Silver carp , 42 Grass carp , 42 Common carp and 25 Bighead carp ) while the number of Black carp in treatments 1, 2, 3 and 4, respectively, 250, 500, 75 and 125 pieces in Ha, blackcap was added to the control species respectively . The number of fish species harvested at end of culture in treatment 1, 2 and control .The total fish species harvested at the end of first year was 2276 out 1904 species released. The number of fishes catch in treatment 1,2 and control were 637,658and 573 species. the statistical analysis showed that average weight of black carp were 407±150 gr in treatment 1, 234±121gr in treatment 2 with the minimum and maximum weight of 242 and 780 gr in first treatment as well as 110 and 750 gr in second treatment the production of black carp in first treatment were 42 kilogram per hectare and 60 kilogram in second treatment. The growth rate were higher in second treatment than first one. In second year the investigation repeated in triplicate with treatment3, 4 and one control .The total stocking density in treatment 3,4 and control were 665,633, and 574 pieces. Statistical analysis showed that total weight of black carp in third treatment was2049 ±614gr and in forth treatment was 2361 ±60 gr where the minimum and maximum values were 3115 gr and 1025 gr respectively. The survival rat of black carp in treatment3 higher than in were treatment 4 while the growth in treatment 4 was higher treatment3.The total production of black carp in treatment 3 and 4 were 123 and 181kilogram per hectare respectively. The ANOVA test conducted for grass carp revealed that treatment 4 is significantly difference with treatment 3 and control. While for silver carp the treatment 4 is significantly difference with treatment 1 and control while for Big head carp the treatment 4 was significantly difference with control at 5% level (P〈 %5) .On second year the black carp reached to acceptable market size which could be compatible with other carp such as common carp and grass carp comparative analysis between different stocking density indicate that the stocking density with 125 pieces showed the highest positive effects.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Species ; Carp culture ; Chinese black carp ; Diversity ; Warm water ; Growth ; Survival rate ; Silver Carp ; Grass carp ; Common carp ; Bighead carp ; ANOVA
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 111pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 38
    facet.materialart.
    Unknown
    Single cell protein Production from culture and marine fish wastes (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The alarming rate of population growth has increased the demand for food production in third-world countries leading to a yawning gap in demand and supply. This has led to an increase in the number of hungry and chronically malnourished people. This situation has created a demand for the formulation of innovative and alternative proteinaceous food sources. Single cell protein production is a major step in this direction. SCP is the protein extracted from cultivated microbial biomass. Algae, fungi and bacteria are the chief sources of microbial protein that can be utilized as SCP. Produced proteins from these microbes have various nutrition values. SCP is the manufacture of cell mass using microorganisms by culturing on available agriculture, industrial wastes and fisheries by products. Fish wastes due to high protein are the most important substrates for SCP production. In this study, SCP production was done from Silver carp and tuna fish wastes (head, tail and vise versa) and cooked water of canned tuna factories. The used microbes were six genus and species of yeasts include Candida utilis, Saccharomyces cereviceae, Rhodotorula, Khyveromyces marxians, Zygosaccharomyces rouxii and Bacillus subtilis and B.licheniformis. The examination was done in bench scale and CSTR bioreactor (Continuous Stirred Tank Reactor). The effects of various parameters such as pH, temperature, time, supplemented substrates, method of inoculation of microbes, rpm were evaluated. Changes of microbial growth and protein contents were tested by using Optical Density (OD) and Makrokjeldal methods respectively. In end of examination, produced protein were extracted and lyophilized. The results showed that protein percentage in bacterial protein was than yeast protein but wet percentage in bacterial protein was low. Production value produced from tuna fish wastes was higher than (30-45 g/l) to Silver carp wastes (25-29 g/l) and cooked water (10-15 g/l). By adding supplemented substrates, production value has been increased. Candida utilis, in comparison other yeasts, has high activation. B.licheniformis has also had more activation than Bacillus subtilis. The results of the effect some parameters on fermentation showed that yeasts and Bacillus in pH= 5.4 and 32oC and pH=6.9 and 35oC were better than growth pH=6 and 25oC and pH=6.5 and 30oC respectively. Time of fermentation in batch and bioreactor was 54 and 21 hours respectively. High rpm has been caused increasing of microbial growth in bioreactor. The conclusion showed that with optimizing of the growth condition such as some parameters (pH, temperature, substrates and so on) produced SCP with high efficiency. However, produced SCP should be exanimated with other specific tests such as amino acid and fatty acid profiles, minerals, nucleic acids and so on. After full examination, this SCP as probiotic could be used in fish and poultry feed.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Single cell protein ; Marine ; Culture ; Fish wastes ; Yeast ; Bacterial ; Population ; Growth ; Biomass ; Algae ; Fungi ; Nutrition ; Candida utilis ; Silver carp ; Bacillus subtilis ; B.licheniformis ; pH ; Protein
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 132pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 39
    facet.materialart.
    Unknown
    Monitoring of fisheries resources in artificial reefs in east of Kish Island waters (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Artificial reefs are manmade materials deployed under water in order to improve invironment and increase the exploaitation of fishing area. Usage of artificial technic has developed due to increase of world pupolation and need to supply of protein, aim to restoring of natural spicialy rehabilitation of demersal fishes. It has effecte 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 assembeled fishes and physical sampling were collected in seasonal during spring, summer, autumn and winterd. Ther were tow tritment 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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Coastal Development ; Fish Production ; Marine ; Artificial reefs ; Fisheries ; Population ; Environment ; Demersal fishes
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 72pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 40
    facet.materialart.
    Unknown
    Comprehensive study on probability of controlling Caspian Sea invasive Ctenophora Activity 4: The laboratory study on probability of controlling Mnemiopsis leidyi by use of Beroe ovata (reproduction study of B. ovata in the Caspian Sea water) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In 1999 Mnemiopsis leidyi was introduced to the Caspian Sea from the Black Sea with ballast waters from the ships. The comprehensive study on probability of controlling Caspian Sea invasive Ctenophora planned after a remarkable of decreeing in Kilka fish catches stocks and fisheris community problems. This study focus on reproduction experiments of Beroe ovata as the best candidate for control of Mnemiopsis population size in the Caspian Sea that was preformed in Turkey and Iran during 2002-2003. At 2002, 87 specimens of B. ovata, 10-50 mm transferred to Caspian sea ecology research center from Marmareh sea where acclimated with Caspian sea water gradually. At 2003, experiments were performed near to Black sea (at Sinop) with freshly collected Beroe ovata, 40-65 mm size in three salinity level treatment, the Black sea water 18 , Mixed water 15 and Caspian water 12 . 130 individuals of Beroe ovata were brought from Sinop (Turkey) to Iran during 2003. A number of Beroe specimens were sent to Guilan province for reproduction studies and another part were sent to Mazandaran province for both reproduction and mesocosem studies. For control we had 1 Beroe, length 30 mm in the Black Sea water that was alive during of study in Iran. The Jars were examined each day for ova and larvae and they were collected and put into glass container of Caspian water for hatching and developing survey, some of them were left without any handling for larvae developing. Also in another experiment the eggs collected from jars were placed in the same three treatments for studying of growth and survival. The results were unsuccessful on propagation experiments at 2002 since the spawning and hatching rates were very low (20 ova) and, none of the larvae developed into adults in Caspian Sea water. The spawning was more in Marmareh sea water with 138 ova where only 7 larvae was hatched. Results showed that Beroe specimens is able to survive and reproduce in Caspian water but was not as well as Black Sea also the Beroe larvae growth rate is low in the Caspian Sea water. Maximum fecundity of Beroe individual was 2212 and 235 ovae in Caspian sea water in site Sinop and Iran respectively. Results showed 34-100% eggs in Caspian sea water were destroyed and did not develop. In Iran we obtained only one larvae with 5 mm length, other larvae were at different stages of development but most of them were 1.2 2 mm. The results of mesocosm survey showed most of ova and larvae have been obtained from the tanks where individuals B. ovata were with Mnemiopsis. Fecundity of Beroe in the control with Black Sea water were between 17 to 1879 with average of 828 ± 112 ova. The poor results of B. ovata reproduction obtained in this survey in Caspian sea may be due to transportation and acclimation stress and low salinity of Caspian Sea water.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Mnemiopsis leidyi ; Beroe ovata ; Survival ; Growth ; Comprehensive ; Laboratory
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 85pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 41
    facet.materialart.
    Unknown
    Studying molecular 2 species econimic shrimps (P. merguiensis, P. indicus) Northern coast of the Persian Gulf and Oman sea using microsatelitte markers to separating and identificating of their possible populations (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study focuses on molecular investigation of two commercial shrimp species of penaeus family namely as : P. merguiensis and P. indicus in order to find and introduce the genetic differentiations and also probable genotypes for monitoring and managing the genetic resources of populations in three major catch areas in the Persian Gulf and the Oman Sea. Only five out of the eight primers for p. merguiensis and four out of the eight primers for P. indicus produced good amplified PCR products with fixed annealing temperature. The rest of the primers were either not easily amplified or produced nonspecific bands. Seven and six alleles were found to be unique to each of the three populations in P.merguiensis and and two populations of P. indicus respectively. Occurrences of heterozygosity deficiency were found at most loci. These heterozygosity deficiencies in observed heterozygosity in compare to expected heterozygosity may be due to inbreeding, genetic drift and consequences of illegal overharvesting of P. merguiensis and P. indicus in the studied areas as well. Deviation from HWE in both studied species was significant in most microsatellite loci (P 〈0.001). We observed deviation from HWE in most loci with hetrozygosity deficits. The genetic variation results showed that the pairwise Fst values were significant between populations in both species. The assignment test for P. merguiensis revealed high gene flow between Hormoz and Jask and restricted genetic flow between Guatr and Hormoz populations .We observed high gene flow between Hormoz and Jask populations for P. indicus. It seems that the changes in immigration patterns of populations between Hormoz, Jask and Guatr areas in both species are depend on the influence of Persian Gulf currents or the life cycle of studied species. Alternatively, the presence of ecological barriers such as mangrove forests may result in restricted genetic flow between Guatr and both Hormoz and Jask populations.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Commercial ; Ecological ; Microsatellite markers ; P.merguiensis ; P. indicus ; PCR ; Molecular ; Species ; Genotype ; Population ; Temperature
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 84pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 42
    facet.materialart.
    Unknown
    Extracted and encapsulated Omega-3 fatty acids from Hypohthalmichthys molitrix (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In Iran, Chinese carps (Common carp, Grass carp, Silver carp and Big head) are cultured by using poly culture methods. Carps have been interested for culture for some properties like easy to farming, fast growth, availability in all season and low lost. In this study, the amount of fatty acid composition in silver carp oil has been evaluated by urea complex method in 1, +5 and -5°C. The fatty acid was purified by crystallization method. The highest amount of fatty acid achieved in 1°C temperature. According to our results, n-3 fatty acid increased but saturated fatty acid and mono unsaturated decreased. Maximum purity of fatty acid in 1, 5 and -5°C temperature was found 67.8, 36.82 and 22.53 percent, respectively. In this project, proximate composition of silver carp meat was also evaluated. The n-3 fatty acid was microencapsulated by mass complex method and different parameters effects such as binding agent, different rate of mixing effect, ion power, different salt concentrations, usage of polyvinyl alcohol and glutaraldeid were studied. Average size of microcapsules in 100,300,500,750 and 1000rpm were found 537.2, 84.4, 12.98, 8.24 and 4 mµ, respectively. Results showed that the best salt concentration for encapsulation was 0.1 molar. In this concentration, the average of microcapsule size was received to 3.3. Using glutaraldeid, mixing glutaraldeid and polyvinyl alcohol and 0.1 molar salt and 1000rpm was prepared the best condition for formation the microcapsule.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: W3 fatty acid ; Silver carp oil ; Urea complex ; Microencapsulate ; Hypohthalmichthys molitrix ; Chinese carps ; Common carp ; Grass carp ; Big head ; Culture ; Growth ; Crystallization method
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 122pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 43
    facet.materialart.
    Unknown
    Production of the burger combination kilka-silver carp and evaluation the nutritional value and shelf life it during cold storage period (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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 insted 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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Chemical ; Microbiological ; Consolidated burger ; Kilka fish ; Silver Carp ; Qualitative evaluation ; Freezing ; Fatty acids
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 116pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 44
    facet.materialart.
    Unknown
    Possibility of Hybrid Induction between Persian Sturgeon (Acipenser persicus) and Sibrian Sturgeon (Acipenser baerii) and Growth Comparison (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In order to introduce a new sturgeon hybrid to aquaculture industry, the possibility of hybrid production by crossing between Siberian and Persian sturgeons and its comparison with its pure parents using morphometric, molecular, cytogenetic and growth performance were conducted. For this purposes eggs and sperms of two pairs of Persian and Siberian sturgeon were collected and reciprocal crosses with 4 treatments were conducted. In treatment 1, Persian sturgeon as control (male and female of Persian sturgeon), treatment 2 (as type I hybrid) from crosses of male Persian sturgeon with eggs of female Siberian sturgeon in treatment 3 (type II hybrid) using crosses between male Siberian sturgeon and female Persian sturgeon and finally treatment 4 by crossing male and female of Siberian sturgeon were used. For each treatment 200 gr. of eggs were fertilized with one ml. of sperm and morphological, meristic parameters of parents and offspring were recorded. For growth comparison of fingerlings of control and hybrids in 3 different phases were measured. In phase (I), larvae rearing from 46 mg. up to 6600 mg. were conducted for a period of 10 weeks. Samples were collected once every two weeks and biological parameters were recorded. In rearing phase II for a period of 330 days, growth comparison were conducted for fish from 6.5 gr. to 750gr. and biological parameter were recorded once every month, where daily growth rate (gr./day), FCR, Specific growth coefficient (percentage per day), increase of body weight, food efficiency and protein efficiency ration were analyzed. In rearing phase (III), from 600 gr. to 2000 gr. for a period of 43 weeks, similar to phase (II) all biological parameters were analyzed, where 26 morphometric and meristic parameters of pure and hybrid parents and offspring were compared both for individual and ratio status of parameters. For genetic analysis and variation between control and hybrid specimens the microsatellite analysis were conducted. For this purposes, genomic DNA were extracted from fin tissues of brood stocks and fingerlings and 10 pairs of specific primers (Afug 56, Afug 63, Afug 241, Afug 229, OX 27, Afug 686, Afug 195, Afug 12, IS 68 and Afug 160) were used. Then PCR Products were electrophoresed on 6% polyacrylamide gel and then were stained with Nitrate silver and alleles were evaluated based on its length (base pair). Cytogenetic analysis and number of chromosome of control fish and hybrid were compared using white blood cell culture method and chromosome spread of parents as well as offspring were prepared by Gimsa staining and were visualized under light microscope. For sexual gonad development, laparoscopic method with light camera (Model M-CAM 1700) were used to differentiate 34 pieces of control and hybrid fish and gonad status of ovary and testis were analyzed. In present investigation the results indicate that, in phase (I) of larvae culture, a significant differences were observed after 10 weeks of feeding (p≤ 0.05) in hybrid and control groups. Maximum growth rate were observed in Siberian sturgeon larvae, followed by type I hybrid, type II hybrid and Persian sturgeon larvae. In phase (II) , growth rate of Persian sturgeon were lower than Siberian sturgeon. For period of 330 days of rearing periods, the control Siberian sturgeon had 1.4gr. weight increment per day, while Persian sturgeon had only1. gr./day. However the hybrid type (I) had an average daily growth of 1.5gr/day and lower growth performance were observed in type II hybrid with daily growth of 1.5 gr./day. In phase (III), growth rates were varied at different age group. The daily growth rate of Siberian sturgeon was 4.5gr/day, while is control Persian sturgeon was 2.6 gr/day. The Siberian sturgeon within 47 weeks of rearing grown from 655 gr. to 2016 gr., however Persian sturgeon for the same period reached from Siberian sturgeon with male’s Persian sturgeon had higher type II hybrid showed opposite results for the same growing period and reached from 640 gr. to 1680 gr. In conclusion of growth performance can be stated that the hybrid from crosses between female Siberian sturgeon with male Persian sturgeon presented highest growth rate in comparison to control hybrid. This excellent achievement can be considered as a big step toward sturgeon aquaculture for meat and Caviar production. In analysis of morphometric characters 26 parameters were investigated which in 18 parameters showed significant differences (p≤ 0.05) which indicate clear distinguish able of hybrid performance in compare with parents where Siberian sturgeon has longer snout compare to Persian sturgeon and its size are intermediate in hybrids. In relative ratio of characters, out of 9 characters totally 7 characters showed significant differences (p≤ 0.05). In molecular analysis using microsatellite primers totally 400 DNA samples of hybrid as well as the control fish were investigated. Totally 784 allele were detected in which 363 alleles were belong to control fish and 421 alleles in hybrid. In this study, 19 alleles with different sizes were observed in hybrids rang from (120bp) in Aox27 primers (400bp) in AFUG229 primers. In comparing of all primers, the primer AFUG160 and AFUG195 with 2 alleles and primer AFUG686 with 7 alleles showed the minimum and maximum allele numbers.The banding patterns were monomorphic in 66 loci of control fish and 65 loci of hybrids, and in 77 loci of control fish and 73 loci of hybrids were diploid in 9 loci of control fish and 12 loci of hybrid fish were tetraploid, in one locus of control samples and 3 hybrid samples were pentaploid and finally within 10 pairs of primers 7 sets were disomic, 3 primers (Afug241, Afug686, Aox27) were tetraploid and 6 primers of (Afug63, Aox27, Afug688, Afug12, Is68, Afug160) showed excellent allele heritability which indicate the high efficiency of microsatellite techniques. In evaluation of the status of gonad development as well as determination of sexual stages laprascopic method indicated that out of 9 samples of Persian sturgeon (4 females and 5 male) were in stage of 2 & 3 gonad development. Out of 8 Siberian sturgeon (4 males+4 females) stage 2, 3, 4 were detected. In 7 gonad samples of hybrid (Female Persian and Male Siberian) totally 5 male and 2 female were observed at stage 3 and 4 gonad development. In analysis of 10 samples of type II hybrid (female Siberian × male Persian) 3 female, 6 males and 1 deformetic were observed. Cytological studies on 30 metaphase palate from 6 fish samples showed that the number of chromosome in hybrid are as same as parents 2n=250±10 where all control and hybrids similar to its parents showed 240 chromosome. In conclusion, It can stated that, this study successfully introduced a new sturgeon hybrid for sturgeon farming both for meat and caviar production. Considering the common name of sturgeon parents used for production this hybrid, we call this hybrid as (Siper) where Si instant for Siberian sturgeon and Per comes from Persian sturgeon.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Hybrid ; Persian sturgeon ; Siberian sturgeon ; Siper ; Aquaculture ; Acipenser persicus ; Acipenser baerii ; Growth
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 133pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 45
    facet.materialart.
    Unknown
    Assessment of some specific and nonspecific immune responses of beluga (Huso huso) following exposure to organophsphte diazinon (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Nowadays, the offspring of sturgeon species in the Caspian Sea is under danger because of biological and non-biological impacts such as pollution and illegal catching as well as dams obstacles of fish migration to the upstream of the rivers for the spawning. One of the most practical way to protect and maintain the natural stocking of these valuable species in the sea is artificial propagation and releasing of the produced larvae into the sea and the entering rivers as Iran Fishery Organization is currently producing about 22 million larvae per year according to the forth national plan of the country. However, protecting these natural resources of these species from the toxic chemicals is a critical issue because of high level pollution of their natural environment. In this research work an attempt was made to evaluate the toxicity of diazinon and its effect on some specific and nonspecific immune parameters of these sturgeon species in particular great sturgeon in order to give some recommendations for improving of their natural environment. A number of 300 fish weighing 12±2 g from great sturgeon obtained from sturgeon farms in Golestan states were used. Fish were transported to the Caspian Sea institute of ecology and were kept in 2000 L tanks with well aeration. Fish were fed commercial feed containing Kilka meal. The water quality parameters consisting of NO2, NH3, pH, DO and hardness were 〈0.1, 0 mg.l, 0.02mg/l, 7.9, 7-9/1 mg/l, and 145 mg/l, respectively. The acute toxicity of diazinon was assessed in beluga (Huso huso) and some of hematological and biochemical parameters of the survival fish examined. The obtained LC50-96 hours was 5.63 mg/l for Huso huso. Also, the obtained results showed that RBC, HB and PCV were significantly lower in the survival fish than the control fish. However, level of MCV in test groups was higher than control groups (P〈0.05). Also, leucocytes count level was different between the test and control groups. Also, no difference was observed in level of enzymes of ALD, AST, LDH and ALP between test and control groups, while levels of total protein and glucose in test groups were lower and higher than control fish, respectively. IgM of these species were purified and partially characterized using affinity chromatography and SDSPAGE methods, the obtained results showed than all fish species possess and IgM like protein with a molecular weight of 870KDa. This IgM showed to have heavy chains with 77-84 KDa and light chains with 28-30 KDa. The chronic/sublethal effect of this diazinon was assessed in great sturgeon juvenile and hematological and biochemical changes, leucocyte population size, lysozyme activity, chemiluminuscence (CL) response, antibody titration and histhopathological change were studied in beluga (Huso huso) weighing 450±50 g in the present of Antigen of Aeromonas Hydrophila as a single intraperitoneal injection at 1x107 cell per fish and thereafter a chronic exposure to organophosphate, diazinon at concentrations of 1,5 and 10 mg/L as a 48 hours bath and sample collected on day one and every week interval upto 22 days provided at 22±1?C and acceptable water quality condition. Results of erythrocyte profile in fish treated with diazinon generally showed significantly decrease of RBC, HCT (P〈0.05) compare to control fishes. While there was no significant difference (P〉0.05) in the values of MCH, MCV and MCHC between these groups. Compare to control group (group A) the values of white blood cells and lymphocyte were significantly lower in the exposed fish to diazinon (groups of C, D, E, F, G and H) while, the level of neutrophile and eosinophil was higher than control one (P〈0.05). No significant differences was found in values of monocytes and immature neutrophiles between control group and these groups (P〉0.05).Furthermore, fish treated with diazinon showed a higher levels of asparate aminotransferase (AST), alkaline phosphatase (ALP), alanine aminotransferase (ALT), lactate dehydrogenase (LDH) in the early stage of post-exposure, compare to control fishes, while the level of these enzymes was lower in this group for the rest of experiment. Also, fish treated with Antigen-diazinon showed generally lower and higher levels of total protein and glucose concentrations in blood plasma, respectively compared to fish untreated(control) (P〈0.05).The level of cholinesterase in fish treated with diazinon bath generally lower than control group(P〈0.05).The level of lysozyme in liver of groups B,D,F,G and H were significantly higher (P〈0.05) than group A up to 2 weeks post-treatment and then it insignificantly reduced to lower levels until week 3 post-exposure. Also, kidney lysozyme contents were significantly higher (P〉0.05) in groups of B,F,G and H than group A up to 2 weeks post-treatment and then was lower for the rest of the experiment. The level of spleen lysozyme in groups of B,G and H was also, higher than group A for the first 2 weeks post-treatment and, then it reduced to below levels measured during the rest of experiment (P〉0.05). Lysozyme level of sera samples were significantly higher (P〈0.05) in groups of B, D, E, F, G and H than group A in the one week post-treatment. There was significant difference in the lysozyme contents of tissues of liver, spleen and serum between groups of A and E,F,G,H(P〈0.05). Mean spontaneous CL response in groups of diazinon bath were significantly lower than group A throughout the experiment (P〈0.05). Maximum peak was found in group D one day post-exposure, while the minimum peak was found in group E throughout the experiment. The antibody titration in groups of treated with diazinon bath generally lower than control group (P〈0.05).but the antibody titer in group B that treated with Antigen without diazinon bath was higher than the other groups. The histopathological effects of diazinon on the liver, kidney, spleen, gills, nostril and barbels of gain sturgeon examined under light and electron microscope, showed that diazinon caused severe damage to the cell structure such as congestion of blood vessels, hemorrhage, cellular infiltration, pyknosis of cells nuclei, vacuolar degeneration and general necrosis in the tissues of kidney, spleen and liver. There were also degenerative changes of interstitial tissue, detachment of tubular basement membrane in kidney. In the gills, hyperplasia and fusion of secondary lamellae, separation and sloughing of epithelium from the underlying basement membrane were also observed In conclusion, diazinon at toxic and sub lethal concentrations is able to seriously affect the sturgeon immunity resulting in suppression of fish immune system and making fish susceptible to both non-infectious and infectious diseases.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Non-biological ; Chemical ; Biochemical ; Histhopathological ; Sturgeon ; Huso huso ; Diazinon ; Immune system ; Blood factors ; LC50 96h ; Migration ; Spawning ; Larvae ; Kilka ; Toxicity ; Aeromonas hydrophila ; Lymphocyte ; Gills ; Beluga
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 154pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 46
    facet.materialart.
    Unknown
    Possibility of using fresh water rotifer Brachionus calyciflorus for feeding Persian sturgeon Acipenser persicus (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Acipenser persicus, one of the native Species living in the southern part of the Caspian Sea, has high Percentage of larval mortality. Therefor to decrease the rate of mortality of larvae survival and to increase to regenerate properly during the active feeding process of fish larvae, while under artificial reproduction they were fed withe fresh water rotifer. Four types of feeding treatments were applied as follow :Treatment 1: Similar to normal process , first withe Artemia cyst then withe Daphnia Treatment 2: Mixture of Artemia, Rotifer and Daphnia; Treatment 3 freshwater Rotifera ;Treatment 4: fresh water Rotifer enriched with Vitamin C (Ascorbic acid- 6- Palmytat ).Three replicates were used for each treatment. In the process of each observation 45 larvae in containers withe 100 liter capacity filled with 30 liters of water , after 8 days of external feeding process, were inspected closely, during which , they were under biometric measurement once every two days. Larvae were fed Four times a day at a rate of 25 % of their body weight. The average temperature estimation was 22/5 ±0/5 centigrade, pH of water being 8/5 ± 0/1 while Oxygen proved to be 9/58 ± 0/2 mg/l . At the end of the observation, the profill fatty acids of the remains were studied .The growth factors, the mouth size of the larvae and the expansion of the mouth size compared to the total length of the larvae during the whole observation were inspected. Credibility of data designated was examined by Shapiro Wilks test. Specific growth rate (SGR), weight growth (WG) and feed conversion ratio (FCR) were contemplated by one- way analysis test, and significant difference Tukey's test. The most notable diversity was evident between treatment 2 , whose indicative factors were in the following order : 4/ 65 ± 0/06, 45/18 ± 0/66, 4/48 ± 0/07 and treatment 4 whose indicative factors showed the following results: 10/47 ± 0/04, 124/42 ± 0/62, 1/51 ± 0/008.For the determination of fatness rate and weight gains, Kruskal Valis and Man vit ni test were used .In this part of study , the highest diversity fatness appeared to be between treatment 4 ,reflecting 0/79±0/07 and treatment 2 showing the result 0/62±0/05.The highest gain was related to treatment 4, whit the rate of 99/33 ± 0/68 mgr and the lowest gain occurred in treatment 2 white the rate 62/36 ± 0/65 mgr . This study also revealed that, the survival ratio connected with treatments 3 and 4 , compared treatments 1 and 2, were significantly different. The profile of fatty acids also showed much higher percentage of PUFA and HUFA in treatments 3 and 4 , than those in other treatments. Furthermore Brachionus calyciflorus proved to be a proper food supply for larvae. Therefore by building suitable pools next to the work side, other kinds of species fresh water rotifer could also be used as food improvements for feeding larvae.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Brachionus calyciflorus ; Acipenser persicus ; Fatty acid ; Larvae culture ; Vitamin C ; Larval survival ; Species ; Mortality ; Feeding ; Artemia ; Cyst ; Ascorbic acid ; Oxygen ; Growth ; SGR ; FCR ; Fresh water
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 78pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 47
    facet.materialart.
    Unknown
    Genetic characterization of Vimba vimba persa in southern part of the Caspian Sea using microsatellite marker (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Population genetic structure of Vimba vimba persa was investigated using microsatellite markers from 4 regions along the Iranian coastline of Southern the Caspian Sea (Anzali lagoon & havigh River in Gilan province, BabolRoud River in Maz&eran province & GorganRoud River in Golestan province). Genomic DNA from 121 specimens was extracted from fin tissue by phenol-Chlorophorm method & PCR reaction was accomplished with 17 microsatellite primers, out of 17 microsatellite primers 14 loci were amplified, in which 10 of them were amplified with reasonable polymorphism & 4 were monomorphism. Totally 302 alleles were identified on average 7.5 Observed & expected heterozygosity averages were 0.80 & 0.77 respectively. Most cases significantly deviated from Hardy-Weinberg equilibrium (p 0.01). The estimation of Fst (p 0.01) revealed significant population structuring & estimate four population of Vimba vimba persa is identified in the Caspian Sea. These studies were to apply & develop population genetic approaches to assist conservation, sustainable harvest & restocking of these populations.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Vimba vimba persa ; Population ; Genetic ; Microsatellite ; DNA ; Genomic ; Specimens ; PCR ; Equilibrium ; Restocking
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 61pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 48
    facet.materialart.
    Unknown
    Determination of optimum stocking density for whiteleg shrimp ( Litopenaeus vannamei ) culture in outdoor pond in Choeibdeh, Abadan (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was carried out to investigate the optimum stocking density for white leg shrimp (Litopenaeus vannamei) in earthen ponds in Choweibdeh shrimp site Abadan southwest Iran. Six 0.5 ha. Earthen ponds were applied to survey three stocking density of this shrimp (30, 45 and 60 indviduals/m2) with two replicates each. 15 days old postlarvae (PL15) with mean weight of 0.021 g were reared in the experimental ponds for 60 days. Results showed no significant difference ( P 〉 0.05 ) between the tested stocking densities in terms of growth ( weight gain, length increment ), specific growth rate ( SGR ), weekly growth rate, survival rate, food conversion ratio ( FCR ) and protein efficiency rate ( PER ). Nevertheless best results were obtained in the stocking density with 30 ind./m2 . Yield was increased by increasing the stocking density and the highest yield was obtained in the density of 60 ind./m2 with significant difference with two other densities. Ultimately, according to the findings of the present study, stocking density of 60 ind./m2 can be suggested as an acceptable density to be applied for white leg prawn in the region.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Experimental ; Litopenaeus vannamei ; Stocking ; Density ; Growth ; Survival ; Density ; White leg shrimp ; Earthen ponds ; Weight gain ; Length ; SGR ; Yield ; Prawn
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 55pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 49
    facet.materialart.
    Unknown
    Biological aspects of Sepia pharaonis in the Bahrekan waters (NW Persian Gulf) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The biological aspects of Sepia pharaonis was studied during years 2006-07. The studied area restricted to the Bahrekan in Khouzestan province covering the depths of 2 up to 25m. The sampling methods were gillnet and bottom trawl. A total of 310 specimens collected, of which there wasn’t found any cuttlefish in the study area from July to October (5 months). The collected samples were transferred to the laboratory ashore for further biological measurements consist of: Mantle length, Body weight, sex determination. Gonado-Somatic Index, and determination of Spermatophoric Index, Spawning season, Food preference, Maturity stages and chemical analysis for food value determination. The results showed that the overall sex ratio is about M:F= 2:1 with percentage of 67.41% for males and 32.50% for females. Males are significantly bigger than females with average mantle length (ML) of 233.3 and 269.3 mm for female and male, respectively; with body weight of 1102.3 and 1450.6 g. The mantle length body weight relationship was found W=0.001 ML 2.540 (R2= 0.92) Female as: W= 0.0015 ML 4797 (R2= 0.93) male From point of feeding, the food preferences results indicated that fish is considered as main food, crabs as minor food and other marine organisms such as bivalvia and gastropods as random food. The highest vacuity Index (CV) and empty stomachs was determined for March-April and the lowest value was is December. Also, the maximum GSI was estimated for March-April months in which showing coherrances with the lowest food preference. The maximum spermatophoricfilaments were 856 and 45 for male pharaoh cuttlefish with mantle length of 300 and 185 mm, and on the other hand this values for fecundity were estimated 1589 and 53 for female specimens with 254 and 198 mm mantle length. The spawning season occurs in April- March in which accompany with migration of pharaoh cuttlefish towards shallow waters. The fishing season would be in this period in w.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Chemical ; Sepia pharaonis ; Gillnet ; Sampling ; Specimens ; Weight ; Sex ; Gonado-somatic index ; Spawning ; Maturity ; Female ; Male ; Bivalvia ; Gastropods
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 85pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 50
    facet.materialart.
    Unknown
    LHRH-A Implantation on reproductive cycle of Iranian sturgeon (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The Iranian sturgeon ( Acipenser persicus) is one of most commercially important sturgeon species in the Caspian Sea and it is considered as an endemic sturgeon of the south part of the Caspian sea. Most of its populations distributed around the south coast of the sea and also the most Iranian caviar production belonged to this species. Due to overfishing, degradation of the rivers conditions as the natural reproduction places the stocks of the fish is decreasing and that is why the Islamic republic of Iran releases millions of its fingerlings to the rivers that end to the sea to stock restoration. With regard to the high expenses of the artificial propagation and fingerlings production, finding and creation of better output will play an important role to decrease the production expenditures. Now days, the decrease in the natural stocks of broodstocks and also the low quality and immature caught broodstocks are the fundamental problems which the industry of sturgeon mass production faces. These not fully matured brooders do not response the hormonal induction processes at the sturgeon hatcheries (because they do not reach to final maturation and some of them having polarization index greater than 10 ) and large numbers of the caught and transported brooders to the hatcheries will not produce any fry ( as the data distributed and published by the sturgeon hatcheries about the production techniques). The main objective of the research study is to apply a new method for artificial reproduction (LHRH-A implantation) to gain the best output from the Iranian sturgeon brooders caught and transported from the Caspian Sea which will be done for the first time on sturgeons and there is not still any report of the application of this procedure ( LHRH-A implantation )over these kinds of fishes. Most published report on the method belonged to the teleosts.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: LHRH-A ; Implantation ; Iranian sturgeon ; Acipenser persicus ; Species ; Population ; Caviar ; Species ; Fingerlings ; Artificial propagation ; Broodstocks ; Hatcheries ; Brooders
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 93pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 51
    facet.materialart.
    Unknown
    The study of possible biotechniques and normative to production some species of Anostraca (Phallocryptus spinosa) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This project was carried out in order to determine the hatching conditions and laboratory culture methods of Fairy Shrimps ( Phallocryptus spinosa). Physico- chemical factors and phytoplankton of natural habitat of this organism was investigated in Khasellou region around Azarshahr – East Azarbaijan province. The results showed that occurance and growth of fairy shrimps in their habitates were beginning from early Aprill and their survival was decreased with increasing temperature, precipitation and increasing the salinity of their culture medium. Then they disappeared. Their habitat phytoplankton contained 3 phylla and 10 genera, from which green algae enjoyed the greatest density in May. The pool salinity was around 20-17 g/l , when metanauplii was observed in early spring. In the pool containing and without fairy shrimps the oxygen concenteration was high (9 mg/l) and low (2.9 mg/l ) , respectively . In 9 prawn ornamental fish genera, feeding with fairy shrimp showed a significant higher fecundity and hatching percentage compaired to manual diets (cow liver, spinach). In all groups fed with fairy shrimp the duration of spawning time were reduced from 15 to 8-10 days and the color was enhanced. The means of cyst number per captured female also, cyst , decapsulated cyst and Naupilli diameters were mesured 142.9±19.0 cysts , 273.2 ± 4.9 µ , 242.4± 3.8 µ and 542.6 ± 27.0 µ., respectively . The hatching rate was increased by reducing temperature and salinity of their culture mediums from 25 to 15 ◦ C , and 28 to 18 g/l, respectively.The highest hatching was observed on 5 th day at 15 ◦ C and 18 g/l (5, 33 %). In addition, low but multiple hatching was observed. Therefore , water temperature and salinity affected hatching rate in this species.The hatching success of Phallocryptus spinosa cysts was beter when collecting cysts together with dry sediments of their habitat without separation sensetive cysts . In addition to cold keeping and freezing, the hydration – dehydration method caused more diapause deactivation for hatching induction. The laboratory results revealed that the survival of fairy shrimps were highest at 15 ◦ C (42%) and lowest at 25◦ C (26%), respectively. Also, their life was inhibited in 30◦ C.In different salinities, the mean survival rate were 26% (Salinity = 15 g/l) and 20% (Salinity = 25 g/l), respectively. The mean survival percentage of Phallocryptus spinosa cultured in natural habitat water (64.3%) was higher than aerated tap water (23, 3 %). Also, feeding with Nanochlorepsis caused higher survival rates. On the other hand, Beakers yeast caused higher mortality rates. Therefore , regarding to relatively high sensitivity of these species to physico – chemical and nutritional conditions of their culture medium, it is better to culture these species with expantion of their natural habitat in order to preserve their biodiversity , culture and increase stocking density with regard to environmental considerations .
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physico-chemical ; Environmental ; Fairy Shrimps ; Phallocryptus spinosa ; Hatching ; Culture ; Biotechnique ; Species ; Anostraca ; Phytoplankton ; Growth ; Temperature ; Salinity ; Phylla ; Feeding ; Survival rate ; Mortality ; Biodiversity
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 104pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 52
    facet.materialart.
    Unknown
    Evaluate The Impact of Dietary Herbal Appetizer on the Growth Performance of Growth out shrimps (Liptopenaeus vannamei) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The main goal of the current study is to evaluate the impact of dietary herbal appetizer on the growth performance of growth out shrimp. This project was conducted at Caspian sea research institute of ecology from 2014 to 2016. Totally 180shrimps with an average weight of 2 g were randomly distributed to 9 fiberglass tanks with area and depth of 1m2 and of 0.6 m. The experiment lasted for eight weeks and the shrimp were fed by three different diets as follows: 1. Commercial pellet contained no herbal additive (control diet) 2. Commercial pellet contained 1% herbal appetizer and 3. Commercial pellet contained 2% herbal appetizer. The results showed that prawn weight gains for diet 1 , 2 and 3 were 6.28, 5.68 and 6.07 respectively. The estimated growth rate was 2.34g for control diet, 2.22g for 1% inclusion of the additive and 2.28g for 2% inclusion of the additive. Results also showed that inclusion of the additive did not change statistically average final weight (p〉0.05). A larger weight gain was observed at 0% additive inclusion although this was not statistically different with other treatments. In conclusion, with regard to the observed results, herbal appetizer administration cannot improve growth, feed conversion rate and weight gain in common carps.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Ecology ; Dietary herbal ; Pellet ; shrimp ; Growth ; Common carp ; Liptopenaeus vannamei
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 24pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 53
    facet.materialart.
    Unknown
    Investigation of Physical and Chemical Properties of Coastal Waters of Hormozgan Province (from Dar Sorkh to Basaiydo Zon) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Without abstract.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Investigation ; Physical ; Chemical ; Coastal Waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 68pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 54
    facet.materialart.
    Unknown
    Stock assessment of kutum (Rutilus frisii kutum) in the Iranian waters of Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was conducted to determine catch and fishing effort trends, length and age composition, growth and mortality parameters and estimate biomass and acceptable biological catch of Kutum in the Iranian coastal waters of Caspian Sea from 2013 to 2015. The catch of Kutum was 6112.8 and 5599.2 tons and CPUE were 181.1 and 183.5 kg/haul in 2013-2014 and 2014-2015, respectively. The mean (± SD) of fork length were observed 39.4±6.1 and 40.7±5.6 cm and for total weight were 805.1±378.0 and 891.5±384.6 gram in 2013-2014 and 2014-2015, respectively. The most predominated of length class was obtained 40-42 cm and frequency of immature individuals were observed 37.8 and 44.4 percent during two sampling period, respectively. The range of age was from 2 to 11 year and fish with 4 to 6 years comprised up to 84 percent. In length – weight relationship a, b and r2 were calculated 0.011, 3.02 and 0.96 respectively. K value, L∞ and t0 were calculated 0.19 (/year), 61.3 cm and -0.99 respectively. Mortality parameters such as Z, M and F were calculated 0.82, 0.36 and 0.46 respectively and Exploitation rate were calculated 0.56. The biomass of kutum estimated 41000 tons and the acceptable biological catch calculated 8250 to 9750 tons. The biomass of Kutum decreased in recently years in spite of produce and release of huge fingerlings. This recruitment (produce and release fingerlings) must be continued for stability of stocks and fishing stress must be decrease by anyway.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Kutum ; Growth ; Mortality ; Parameters ; Biomass ; ABC ; Age composition ; Length ; Rutilus frisii kutum
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 68pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 55
    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 (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Microbial ; Chemical ; Burgers ; Fish ; Silver Carp ; Storage ; Quality ; Changes ; The shelf life ; Texture ; Pectin ; Nitrogen ; Bacterial ; Psychotropic
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 42pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 56
    facet.materialart.
    Unknown
    A survey on some biological aspects of spiny lobster Panulirus homarus for optimizing fishing season in Sistan - o – Baluchestan provnce (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Research project was conducted on some biological aspects of lobster in Oman Sea in the years1385-86. During the project some parameters such as length distribution, spawning peak, length (Carapace) at first maturity, the length at which 50% of the lobsters were found to be mature sexually, sex ratio, relative frequency index and population dynamics parameters were examined. Quantitative factors and catch composition of lobster including the amount of catch in terms of weight and number of ovigerous-female, under-sized specimens and so were compared by monthly. According to the results of present study caught specimens were male with carapace length of 22 and 110 mm respectively. The smallest ovigerous female was taken as 46mm CL when length at first maturity was estimated to be 69-70mm. the male: female ratio was 0.7: 1.3 for the whole year. A closed fishing season for the species is proposed during spring and September and October in Oman Sea. A large amount of the catches for the all sampling months came from the under-sized specimens, consist of 50 to 85% of the total catch. Therefore, presence of these small length groups have direct effects on time of closing season. Population dynamics parameters were calculated as follows: K=0.57 year, L∞= 103mm and Ǿ = 8.69. Total mortality (Z), natural mortality (M) and fishing mortality (F) coefficients were calculated as 2.73, 0.87 and 1.86, respectively. Exploitation ratio for the whole population was 0.681, indicating an overexploitation of the species. Based on the available data, the recruitment pattern for lobster was obtained for two season including spring (major) and autumn (minor). Catch per unite effort (CPUE) was calculated as 0.908 kg/Cage/day which was higher in comparison with two other areas including Ramin and Chabahar. Examination of CPUE for a 10-year period showed a decreased trend and the reduction for the year 1386 was about 30% when compared to the data from the year 1375. Moreover, the mean length during 1369-70 to 1385-86 (present study) decreased for the three areas including Pozm, Ramin and Chabahar, so that the carapas length decreased up to 10 mm in length. This sudden decrease in mean length during the 10-year period should be considered as a serious precariousness for sustainable exploitation of lobster in Oman Sea along Sistan and Baluchistan province.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Survey ; Spiny Lobster ; Panulirus homarus ; Fishing ; Spawning ; Length ; Maturity ; Sex ratio ; Female ; Specimens ; Species ; Mortality ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 68pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 57
    facet.materialart.
    Unknown
    Identification and density determination of jelly zooplanktons in Khuzestan coastal waters (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Recently, we have been encountered to increasing jellyfish biomass in the world tropical coastal waters and due to their role in ecosystem food web, can be made direct and indirect effects on marine stocks and causing problems for fisherman’s communities. Now, the number of studies on this animal groups and factors which caused to jellyfish bloom has been increased. Present study was carried out for identification and density estimation of jellyfishes in the East and West coasts of Khure-Musa canal in Khuzestan coastal waters in North-West of Persian Gulf. Monthly samples were collected by two sampling methods from randomly sites in studied area in day light during February 2007 to January 2008. Small jellyfishes were collected by using 500 micron mesh net and density was calculated as number per 10 square meters. Large jellies were collected by using shrimp trawl net and quantity measurements were done by swept area methods. Totally, 18 species including 9 hydromedusae, 2 Scyphomedusae, 3 Siphonophorae and two Ctenophores were identified. Generally from 5357 separated small jellyfish, 56.6 % was from East and 43.4 % was from west coasts. Ctenophore, Pleurobranchia (31%) and then the Hydromedusa Eiren hexanemalis (22%) were the most abundant taxa. The maximum number of jellyfish (1080 per 10m2) was observed in western coasts in July and then decrease in summer and autumn. In contrast to Eastern coasts, the highest frequency (655 per 10 m2) was observed in western coasts in September. Two peaks of frequency in May-June and in summer to fall were observed in this area. The highest frequency of macro jellyfishes were in July and mostly in East coasts (2811 per km2). During February 2007 to February 2008 Catostylos tagi and Chrysoara hysocello were dominated. Monthly jellyfish abundance variation showed inverse relation between Eastern and Western coasts. The maximum diversity was in August in Eastern coast and July in Western coasts. The minimum values were calculated in winter months in two areas. Obviously, with increasing jellyfish abundance, in summer months, fish larvae population decreased. Jellyfish explosion can be caused by several factors, fishing pressure and removing top predators from food web, climate change, global warming and eutrophication phenomena are defined as the major factors in jellyfish bloom in worldwide tropical coastal waters. Therefore human activities enhance the occurrence of this phenomenon. Recent drought, decreasing freshwater input, increasing waste discharge and overfishing are probable causes for jelly blooms in Khuzestan coastal waters.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Jellyfish ; Eiren hexanemalis ; Catostylos tagi ; Density ; Zooplanktons ; Biomass ; Marine ; Species ; Hydromedusae ; Scyphomedusae ; Siphonophorae ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 60pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 58
    facet.materialart.
    Unknown
    Survey of Growth fingerlings to marketing size in Aspius aspius with food manualy (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Survey ; Growth ; Fingerlings ; Marketing size ; Aspius aspius ; Food manualy
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 67pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 59
    facet.materialart.
    Unknown
    Evaluation of photosynthetic products (phytoplankton) in the major estuaries of the southern Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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).
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Chemical ; Physical ; Environmental ; Photosynthetic product ; Phytoplankton ; Species ; Biomass ; Plankton ; Sampling ; Bacillariophyta ; Pyrrophyta ; Cyanophyta ; Chlorophyta ; Euglenophyta ; Xantophyta ; Abundance
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 87pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 60
    facet.materialart.
    Unknown
    Using pellt in grass carp Ctenopharygodon idella (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: For hand feeding of Grass carp (Ctenopharyngodon idella), a kind of fish used in integrated carp culture, two kinds of pellets with Alfa alfa as current food were suggested as follows: 1. Pellet B with low fiber and high protein 2. Pellet C with high fiber and low protein The ingredient ratio was powdered and mixed, by adding water, fiber was made and minced the minced pellet was put on net tray and then in blotter to be dried and ready for use. In this experiment food quality analysis and also food water stability was measured. Regarding sampling, growth rate and weight increase of fish and FCR of each ratio was determined. Results indicates diet C is not able to compete with Alfa alfa from the stand point of weight increase, FCR and price. But diet B with low FCR and higher growth rate and higher price (not meaning ful P 5%) can compete with Alfa alfa.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Grass carp ; Feeding ; Pellet ; Ctenopharygodon idella ; Fish ; Culture ; Alfa alfa ; Fiber ; Protein ; Sampling ; Growth ; FCR
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 33pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 61
    facet.materialart.
    Unknown
    Study on effects of red light intensities and periods on growth performance of Caspian trout (Salmo trutta caspius) larvae (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Survey is conducted to evaluate the effects of different intensities and durations of red light spectrums on growth performance and survival of Caspian trout (Salmo trutta caspius) in Coldwater Fishes Research Center (CFRC). According to the standard methods and manuals, selected 1.1±0.2 g (1755 individuals) larvae transferred from a registered and well-known hatchery and introduced to the fish tanks in CFRC after quarantine and adaptation procedures. The trial designed for 9 treatments with 3 repeats and fish tanks (California troughs) stocked by 65 larvae. All tanks were separated by dark plastic sheets individually to more controlling actions on special lighting regimes, except controls. Lighting actions were conducted as long as survey stage for 36 days by economic lamps (P: 40/50 W, =550/880 lum) on lighting durations of 12/12, 10/14, 14/10 h (on/off) and 24 (on) by 40/50 W lamps respectively for treatment 1 to 8. Controls are considered in treatment No. 9 by natural and environmental lighting regime. The biometry operations were carried out in a 6 days interval. Results were analyzed with SPSS (Version 12) software and by ANOVA one way analysis method and multiple levels of Duncan Test; graphs were illustrated by Excel software. According to the results, most of the measured factors as growth indicators (FW, WG, FCR and SGR) in treatments (1-8) had showed significant differences in compare of control. In this case, oily drips in retina layer of eye s larvae absorb the short light spectrums and let the long spectrums to be transferred. Thus because of more vision, feeding behavior could develop with lower stress condition. Moreover, some growth factor (SGR, WG and FCR) rates in larvae showed better values significantly in treatment (1) (12/12 h lighting with 550 lum) in compare of other treatments and controls (P≤ 0.05). In addition, there are not any harmonized and expected growth parameters with synchronized red lighting intensities and durations in the Caspian trout larvae. It seems that recent demonstrations were influenced by physiological effects of some endocrinal glands and brain neurotransmitters.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physiological ; Environmental ; Caspian trout ; Salmo trutta caspius ; Larvae ; Red light ; Light strengthen ; Light duration ; Growth ; Survey ; Survival ; Coldwater ; Feeding
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 54pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 62
    facet.materialart.
    Unknown
    The assessment quality of effluent from shrimp aquaculture site in Gwater (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Present study was conducted in shrimp farm located in east of Chabahar in Sistan and Balouchestan province from August 2001 until May 2003. Fourteen stations at three locations (i.e. supply channel, drainage channel and Gwatr Gulf) were selected to determine physical and chemical factors such as; temperature, salinity, dissolved oxygen, pH, nitrate, nitrite, ammonia, phosphate, silicate, total suspended solid and turbidity. Sampling was conducted twice a month during the shrimp culturing period and monthly at other times. Water samples were collected every two weeks to determine Chemical and Physical factors, Chlorophyll a, Phytoplankton and Zooplankton. Sediment samples were collected seasonally to examine Macrobenthos, Grain size and Total Organic Matter. The results revealed different bioenvironmental area in the three locations (i.e. supply channel, drainage channel and Gwatr gulf) over the study period. One-way analyze of variance of chemical and physical factors indicated significant difference between different times as well as different stations (p〈0.05). The negative relationship was observed between the culturing production area and the amount of average dissolved oxygen, pH and total suspend solid. An increase in the culturing production area in 2002 as compared to that of 2001 causes a decrease in the amount of these factors. However, it dose indicates positive relationship with nitrate, nitrite, ammonia, transparency and chlorophyll. Forty nine phytoplankton genus were identified, which mainly belong to diatoma, dinoflagellate and green blue algae. Diatom was dominated among these groups. Diatom and green-blue algae and diatom comprised %79, %69 and %64 of phytoplankton flora respectively in supply channel, Gwater Gulf and drainage channel. Copepod and thintinnida were the major groups of zooplankton. High abundance of bivalve, Polychaetes and amphipoda were found in supply channel, Gwatr Gulf and drainage channel respectively. Analysis of grain size showed the existence of sandy sediment in Gulf of Gwatr and sandy-loom in supply channel. Drainage channel sediment found to be sandy-loom, sandy-silty-loom and sand loom. Among three locations, the highest TOM was found in drainage channel. In last location, production area in 2002 increased as compared to that of 2001, which showed negative relationship with salinity, nitrate, nitrit, ammonia and chlorophyll a. Drainage of the Gwatr s shrimp farm did not cause any thermal contamination in the location. Shrimp aquaculture activities caused an increase in the average of salinity, range of pH in the Gwatr Gulf.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Chemical ; Shrimp ; Aquaculture ; Temperature ; Salinity ; Dissolved oxygen ; pH ; Nitrate ; Ammonia ; Sampling ; Phytoplankton ; Zooplankton ; Sediment
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 153pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 63
    facet.materialart.
    Unknown
    Pliminary rearing of sea bream (Acanthapagrus latus) in the ground pond in the Choweibdeh (Abadan) using available artificial feed (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study has been carried out to evaluate the possibility to culture shanak (yellow fin seabream: Acanthopagrus latus) fish in the ground pond. The study including two experiments. In the first experiment two commercial available feeds (403 as shrimp food and F.F.T as trout food both produced by Chineh company) are used to evaluate the growth performance of the bream Juvenile produced artificially in the Bandar Imam Mariculture Research Stationin weghing 2.72- 3.54 g. To perform the first experiment 6 ground ponds each with 0.25 ha area are used as replicates 3 ponds randomly allocated to each food. 5000 in dividual juvenile fishes are stocked in each pond. After 116 days rearing period well growth performances are achieved for both foods with no significant difference (P 0.05) between them, although better growth performances are observed for F.F.T food. The final weight (WE), SVR ,FCR and SGR of shanak for F.F.T food respectively were 23.29 ± 11.14, 95.98% ±0.78, 1.39 ±0.26 and 3.47±0.23 where for 403 food were 22.08±9.95 , 89.67%±8.75 , 1.53±0.12 and 3.25±0.33 respectively. In the second experiment in which only trout food was used the target was to examine the growth parameters of shanak juvenile in a full rearing period (198 days) in the ground pond. Juvenile fishes with 36.53 g were used with same methods adopted for the first experiment. The final weight of 206.3 g is achieved by 89.35% SVR and 1.92 of FCR. Results of this experiment showed that the growth quickly improved with fast rate along with the increment of temperature and salinity up to 25ºC and 14 ppt respectively. There after by the raising the temperature and salinity more than 25 ºC and 14ppt respectively the growth reduced.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Commercial ; Yellowfin Seabream ; Culture ; Ground pond ; Commercial food ; Rearing ; Acanthapagrus latus ; Artificial feed ; Growth ; Juvenile ; Temperature ; Salinity ; Pond ; Feed
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 35pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 64
    facet.materialart.
    Unknown
    Survey of Handling and freezing storage effects on quality of Aras dam's fresh water crayfish meat (Astacus leptodactylus) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Chemical ; Microbial ; Microbiological ; Handling ; A.leptodactylus ; Quality ; Freezing ; Fillet ; Spoilage ; Survey ; Fresh water ; Crayfish ; Astacus leptodactylus ; Protein
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 46pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 65
    facet.materialart.
    Unknown
    A survey of some biological aspects of Cobia (Rachycentron canadum) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Biology aspects of cobia (Rachycentron canadum) were investigated from October 2005 to December 2006 in Northern waters of Persian Gulf (Hormozgan province).The reproduction cycle, sexual maturity, sex ratio, Fecundity, Lm50, feeding, length frequency, growth parameters and mortality of cobia were studied from total of 509 specimens ranged from 19 to 159 fork length. Gonadosomatic index peaked during spring and summer with main peak in June. Spontaneous spawning occurs around the year with peak in June. The overall female to male ratio was significantly 1 : 1.49 (P〈0.05). Batch fecundity were estimated 1684954±118990 in 15 females. Relationship between total length and fecundity were calculated F=1.3717TL 2.9567 (r2= 0.82). Feeding studies indicated that the bony fishes were main food of cobia (76%) and followed by crustaceans (25%) and mollusks (11%). Rays were least food items (22%). Maximum and Minimum GaSI were observed in March (33%) and August (0.07%) respectively. Females reached 50% sexual maturity at 81.25 cm TL. The total length -weight relationship was W=0.0042L3.1162 ( r2=0.9852). Thetotal length-fork length relationship was TL= 1.1561FL-2.533 (r2= 0.9933). Growth parameters K, L ,and t0 were calculated by von bertalanfy growth equation : 0.11 (year1), 168.65 cm, 3.49 and -0.97 respectively. The instaneous rate of total mortality (z), natural mortality (M) and fishing mortality estimated by catch curve analysis were 0.30, 0.25, 0.14 (year1). Exploitation rate and Tmax were 0.36 and 28 yearrespectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rachycentron canadum ; Cobia ; Sex ratio ; Fecundity ; Lm50 ; Feeding ; Mortality ; Growth ; Parameters ; Biology ; Maturity ; Spawning ; Fecundity
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 85pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 66
    facet.materialart.
    Unknown
    The possibility of broodstock production Pinctada margaritifera in response to the dietary treatments (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Pearl aquaculture production is one of the most valuable industry in the world. Black lip pearl oyster Pinctada margaritifera is one of the most important commercial species in the world that it is used for breeding and production of pearl. To determine the basic requirements for black lip oyster growth and development of gonad under controlled conditions, Pearl oysters with a total length of 80 mm shells that were in stage 2 maturation of the island Hendorabi collected by diving operations and were transferred to Bandar Lengeh Research Station Persian Gulf mollusks. Pearl oysters with length of 95 mm shells, was passed were all male. 25 percent of them with a total length of 100-110 mm and all with a total length top of 110 mm were female. Then thay were fed for 45 days in appropriate conditions of temperature and photoperiod with March until late spring. Ggreatest physical growth related to Diet with micro-algae Isochrysis sp (T.ISO), Cheatoceros calcitrans, Cheatoceros mullerii, Pavlova lutheri and Tetraselmis suecica, which with the other treatments were significantly different (p〈0.05). Most gonadal growth of the group 4 (Isochrysis sp (T.ISO), Pavlova lutheri, Cheatoceros calcitrans, Cheatoceros mullerii ) was 70% in the treated females were spawning. Minimum total length of black lip oyster in habitat of 80 mm, which were collected from a depth of 2 meters. There is no relationship between total length Oysters and depth of 4 to 10 meters depth and minimum total length was 115 mm. The most density of Black lip oyster were observed in the depths of 4 to 7 meters in the northwestern part of the island Hendorabi. There were stronger correlation between biometric data, length-weight relative to length- length.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: The possibility of broodstock production ; Dietary treatments ; Pinctada margaritifera ; Growth ; Cheatoceros calcitrans ; Cheatoceros mullerii ; Pavlova lutheri ; Tetraselmis suecica ; Spawning ; Aquaculture
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 62pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 67
    facet.materialart.
    Unknown
    The identification of best location for rehabilitation of coral stock (Acropora spp.) in the Larak island (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Nutrients, organic matter and benthos communities of sea bed, health and growth of Staghorn corals (Acropora spp.) were investigated at two stations on the Lark Island from Jul.2012 to Feb.2013 seasonally. ANOVA test was used for the spatial and temporal variations in the studied between stations and seasons(95 percent confidence interval). Also,Principal Component Analysis (PCA) factor was used in order to identify the most important parameters influencing of coral growth. ANOVA test indicated difference between Biometrics new coral colonies at both the station and the old coral colonies in the West Island Station Lark in the summer and spring together with autumn and winter(P〈0.05), Although there was no significant difference between autumn and winter(P〉0.05). Salinity factor was similarity (P〉0.05), but the factor of temperature was difference in the summer with other at both stations in all seasons (p〈0.05). Diving observations indicated that adaptations of in the coral habitat at both stations is selected. In order to avoid of stress caused by fluctuations in temperature and salinity at both stations, Staghorn corals were distributed in the region away from the coastline. Also, these communities have chosen transverse expansion strategy a way to escape the stress of sea surface temperature fluctuations. Significant correlation was reported between temperature fluctuations and the development of the Lark island's coral bleaching. It also has been reported to the Persian Gulf corals are vulnerable to unusual changes in temperature and long term stress. Studied nutrients (nitrate, nitrite, phosphate and silicate) in front of Lark station had a higher amount of station of West Island.The results of nutrients (nitrate, nitrite, phosphate and silicate) did not show any difference in the previous studies in the larak coral ecosystems. Therefore, the probability of coral loses in front of Larak station, caused no recycling of materials, and increased accumulation of nutrients in the current situation. Benthos communities of bottom were differed (P〈0.05), but the density of these communities, there were no differed in the two stations in the same season(P〉0.05).The study of Gran size of seabed was showed the highest amount of sand in all seasons at both stations. Studies showed that, in the absence of environmental stress, the type of bottom sediments had as an important factor in the distribution and abundance of benthic organisms. Although coral life is not directly related to the richness of the seabed, but production in marine ecosystems directly and indirectly related to these communities, which is influential on the richness of these ecosystems. In studying Coral Watch method were concluded difference between indices used in seasons of summer and winter together, and with autumn and winter seasons (p〈0.05), although no differences was observed between autumn and winter(p〉0.05).The indices obtained in this study can be concluded the minimum stress during the period of the study was dominated ecosystems, also difference between summer and spring of this study could have been influenced by the effect of temperature on zooxanthella concentration. Two components were identified in this study using of principal component factor analysis to identification the most important parameters that influence the growth of corals. Also, the variability of each factor studied was different.Highest loading factor on the first component of turbidity, temperature and salinity, and the second component loading factor maximum nitrate, nitrite and phosphate are inversely associated with coral growth. According to consideration the ecological conditions were determined two area to rehabilitation stocks of Staghorn corals around the Lark Island by using ArcGis software.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rehabilitation ; Coral stock ; Acropora spp. ; Nutrients ; Organic matter ; Benthose ; ANOVA ; Growth ; Temperature ; Zooxanthellae
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 54pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 68
    facet.materialart.
    Unknown
    Preliminary study on induction of triploidy in Benni (Barbus sharpeyi) by thermal shocks (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Barbus sharpeyi is a local fish of Khouzestan that is planned to be a target for aquaculture in recent programs of fisheries organization. Considering importance of this species in its dispersal region, the main goal of this project was evaluation of possibility for triploidy induction and its potential in response to the heat shocks, efficiency of viability and growth and finally reporting the best condition for triploidy induction in Benny. Induction of thermal shocks was executed in for cold and heat shocks (2 and 4°C for cold and 34, 36 and 38°C for heat). Time of induction and its duration varied between 2 and 5 minutes after the fertilization for 3 and 5 minutes. Each treatment was repeated for 3 times. The ploidy level was determined based on size of nucleus diameters in erythrocytes. Analysis of data was done by SPSS (ver. 16) using T-test and ANOVA method. Results showed that the maximum number of triploid individuals was obtained in treatment of 38°C, 2 min after the fertilization by duration of 3 minutes but as the condition was not suitable for the viability of the eggs, losses of the larvae was high in this group. The best efficiency of triploidization in B. sharpeyi belongs to the 34°C, 2 to 5 minutes after the fertilization for duration of 5 minutes. Nuclear dimensions showed an increase in triploids and confirmed that this characteristic can be used as a reliable factor to distinguish polyploidy. Results of this study showed that B. sharpeyi has the ability for polyploidy inductions specially heat shocks. Evaluation of growth in matured fishes, use of proper tagging systems to distinguish the treatments and designing a plan for bioconserving and genetic improvement of this species is recommended.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Aquaculture ; Triploidy ; Benni ; Barbus sharpeyi ; Thermal shocks ; Species ; Growth ; Fertilization ; ANOVA ; Bio conserving ; Genetic
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 72pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 69
    facet.materialart.
    Unknown
    Investigation on production frozen minced fish meat and frozen fish ball from Abramis brama (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: To study the preparation of frozen minced meat from abramis brama orientalis commonly known as sim from Arras lake and from silver carp cultured in the Azerbaijan province, and later this minced meat converted to fish ball and fish burger, in this process microbial, chemical and organoleptic tests was done on samples for frozen minced meat on Sims fish the TVN was 10.1 in zero phase and 14.1 after three month and peroxide value from 0.9 t0 3.1 at the same duration. But he value was higher when converted to fish ball, TVN ranged from 14 to17.6 and per oxide from 1.1 to 4.7 after three month, the unit for TVN was mg/100gram and peroxide unit meq/1000 gram, the microbial tests was also resulted in an acceptable range, the meat of Sims fish had no significant difference with the silver carp comparatively only the color and the smell of the fish was little different, so we could conclude that we can use Sim fish meat for frozen minced meat product and this can increase the consumption of fish in the region in the future.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Microbial ; Chemical ; Minced fish meat ; Frozen fish ball ; Abramis brama ; Silver Carp ; Culture ; Oreganoleptic test ; Samples
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 39pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 70
    facet.materialart.
    Unknown
    The study of adaptation, growth and survival of tilapia (Oreochromis.sp) in Bafgh brackish water (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: An experiment was conducted to evaluate the possibility of adaptation, growth and survival of Red and Nile tilapia (Oreochromis niloticus) in underground brackish water. Fry with 0.3 and 0.7 g initial weight imported from Indonesia and after passing larviculture (20 g) were examined separately in fiber glass tank and earthen pond by two replicate. Fish were fed three times a day by using manual food (cp = 33.79) and carp food (cp = 25.05) at a restricted feeding program according to standard table during the 72 days rearing stage at light period. The results showed that some growth factors such as final weight, final length, daily growth rate, specific growth rate and weight gain in Nile tilapia were slightly higher than red tilapia but other factors such as survival and feed conversion rate in red tilapia were slightly higher than Nile tilapia. There were no significantly differences at 99% level among these factors. Length-weight relationship equation was w = 0.020 × TL3.012 in Nile tilapia and w = 0.015 × TL3.086 in red tilapia (r2 = 0.98), b value was 3.012 and 3.086 respectively in Nile and red tilapia representing isometric growth. So according to the results, good growth and high survival rate, it seems that both Nile and red tilapia could be good candidates for reproducing and rearing in brackish water condition.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Oreochromis niloticus ; Adaptation ; Growth ; Brackish water ; Survival ; Tilapia ; Oreochromis.sp ; Larviculture ; Rearing
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 44pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 71
    facet.materialart.
    Unknown
    Bacteria effects (probiotics) on growth and survival rate and resistance of shrimp during propagation stages (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This project investigates bacteria effects as probiotics on growth and survival rate and resistance of shrimp during propagation stages. Bacterial flora were extracted from seawater , water of cultured farms , shrimp cultured and sludge from private propagation farms different bacteria such as Vibrio alginolyticus(serotype1-4) Vibrio splendidus I , Vibrio fluvialis ,Vibrio anguillarum ,Vibrio costicul, Vibrio vulnificus,Vibrio nereis,Vibrio camplbelli,Vibrio natriegens,Vibrio proteolyticus, Vibrio plegius ,Vibrio fischeri,Aeromonas hydrophila, Aeromonas schuberti,Aeromonas salmonisida, Aeromonas veronii , Pseudomonas pseudoalcaligenes, Pseudomonas chloraphis, Alcaligenes faecalis, Bacillus megaterium, Bacillus pumilus, Bacillus circulans, Bacillus cereus, Bacillus subtilis, Bacillus licheniformis, Lactobacillus case, Lactobacillus bulgaricus, Lactobacillus delbrukii, Lactobacillus fermentum, Lactobacillus leichmanii, Lactobacillus plantarum, Lactobacillus rhamnosus, Lactobacillus acidophilus, Lactobacillus lactis, Pediococcus acidilactici were isolated , identified and lyophilized.These bacteria in different experiments were used on shrimp life cycle stages and live food such as Chaetoceros , Skeletonema and Tetraselmis algae. Some serotypes of one bacterial species showed various reactions in media and experiment probiotics. Vibrio alginolyticus(serotype1) with 107 cells/ml can increase Tetraselmis sp production during 6 days to 71% compared to the control experiment without bacteria. Also Vibrio alginolyticus(serotype4) with 105 cells/ml can increase Tetraselmis spp production during 6 days to 389% more than control. Vibrio splendidus could increase 23% shrimp fork length in postlarvae 3 compared control. Vibrio alginolyticus+ Vibrio fischeri can increase survival , fork lenght and body weight of green tiger shrimp postlarvae significantly(P〈.05).
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Bacteria ; Shrimp ; Algae ; Probiotic ; Vibrio alginolyticus ; Vibrio splendidus ; Vibrio fluvialis ; Vibrio anguillarum ; Vibrio costicul ; Growth ; Survival rate ; Resistance
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 85pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 72
    facet.materialart.
    Unknown
    The Study of Rearing Density Effect on Growth and Survival of Fingerlings Kutum, Rutilus kutum, with Caspian Sea Water (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Rutilus kutum is one of the most important economic fish species of Iranian costal of Caspian Sea. This species conducted more than 60% of fish caught in Caspian Sea annually, and more than 10 thousands fisherman engaged to its fishery. In present study, kutum fingerlings reared in two different densities include of 25 and 40 fish/m2 with mean weight of 17.5 ± 5.87 g. The period of test being planned 10 weeks and the test organism housed in circular concrete pools of 3 m3 capacity with flowing water and aeration in pools are supplied. The fishes feed by extrude food with 45% crude protein and 14% crude fat. After termination of the experiment, the result showed that weight gain performance, specific growth rate, condition factor, food efficiency rate and protein efficiency rate decreased, while food conversion ratio increased with rising of density, as their different was significance in two experimental treatments (p〈0.05). The kutum reared in low density showed significantly higher survival rate (SVR) (with 88.8%) than high density (with 76.9%) (p〈0.05). Based on the different observed effects of the density on growth and survival, it is recommended the use of a 25 kutum/m2 density for rearing by Caspian Sea water.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rutilus kutum ; Density ; Culture ; Growth ; Survival ; Fishery ; Fingerlings ; SVR ; Rearing
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 28pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 73
    facet.materialart.
    Unknown
    An attempt to isolate the growth hormone gene by a PCR approach in Russian sturgeon (Acipenser gueldenstadti) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: An attempt was made to isolate a growth hormone cDNA using a PCR procedure. Two different sequences (219 bp and 319bp) that were obtained using a cDNA approach do not seem to correspond with the growth hormone gene sequence though they have some homology with it. Only a few genes have been sequenced up to now in Russian. Sturgeon (Acipenser gueldenstadti) thus the two sequences studied be useful both for population and phylogenetic studies of Russian sturgeon (Acipenser gueldenstadti).
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Acipenser gueldenstadti ; Russian sturgeon ; PCR ; Hormone ; Gene ; Growth
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 49pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 74
    facet.materialart.
    Unknown
    Comprehensive study on probability of controlling Caspian Sea invasive Ctenophora (Mnemiopsis leidyi) (Activity 2: Investigation on Mnemiopsis leidyi diet in the Caspian Sea) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Mnemiopsis leidyi is one the species of comb-jelly. It belongs to the Ctenophore phylum and Lobate order. It is a purely marine, free-swimming animal with a transparent jelly-like walnut-shaped body, which was transported from the Black Sea into Caspian possibly at the end of 1990s. This species is food rival of pelagic fish. It has been reported that the ctenophore caused the dramatic decrease of zooplankton and pelagic fish stock in the Black Sea. In this study, sampling on Mnemiopsis leidyi, zooplankton, phytoplankton was conducted from December 2003 to March 2005, from a total of 11 stations located along four transects (Anzali , Khazarabad, Tourkman and Gorgan Bay) by METU net in the Iranian coasts of the Caspian Sea. Clupeonella catch was done by light fishing with fishing vessel in Anzali region. The results showed that the biomass of M.leidyi had some fluctuation in different seasons and its maximum biomass was recorded in summer with a figure of 524.4±156.2 g.m2 Tourkman region and the minimum biomass was observed in winter with a figure of 5.15±1.81 g.m2 in Anzali region. Study of stomach of Mnemiopsis showed, that Acartia (belonged of Copepoda with 66 %), lamlibranchia (13 %) has the highest frequency and the lowest were Balanus nauplii, Rotatoria, Tintinnopsis and Podon polyphemoides. The maximum mean abundance of zooplankton was 29368±24318 n.m3 in winter (Anzali region) and the minimum was recorded 4170±5014 n.m3 in summer (Tourkman region). Copepoda was dominant zooplankton in the Iranian coasts of the Caspian Sea. Chrysophyta with 150000000±440000000 n.m3 and Euglenophyta with 260000±521000 n.m3 had the highest and the lowest frequency respectively in the Caspian Sea. The main foods of Clupeonella were Acartia with 80 %. The survey of stomach of Clupeonella showed that the feeding of these species was not good and the highest fullness index was recorded 220.95±314.67. These results showed, the main food item of Ctenophora and Clupeonella were Copepoda (Acartia). It seems, the impact of Mnemiopsis leidyi feeding has been the important factor in declining zooplankton populations, Clupeonella stocks, and also increasing of phytoplankton abundance.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Ctenophora ; Mnemiopsis leidyi ; Diet ; Species ; Phylum ; Pelagic fishes ; Sampling ; Zooplankton ; Phytoplankton ; Acartia ; Ctenophora ; Population ; Abundance
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 53pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 75
    facet.materialart.
    Unknown
    Study on rearing movine carps in The ponds of brackish water and freshwater (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In this study, mono culture of Cyprinus carpio in fresh water and brackish water with 3500 specimens per hectare with 3 replication each carriedout from midel April to end the October 2010 and mide april to end the October 2011 recptively. Juline fish with 40 gr weight takeup from the sade voshmgir and after prepara tion of rearing ponds were introduced to pond according to appropriate and caluclate stocking density. Juline were fed by concentracted food(GFC). Feeding calculation based on percentage of body weight varied from 5 to 10 % of body weight. In fresh water Average weight and lenghth were in the stage time stocking 40 gr 14.68 cm and at the end of cultuivation period were 704.26 gr and 37.04 cm respectively. Inorder to comparecultivation of Cyprinus carpio in freshwater with breackish water another stocking 350 specimens per hactar with 3 replications also tookplace in this study. Junlin fish with average weight of 40gr and average length of 14.12cm were introduced to the ponds. At the end of rearing period average final weight was 700.26 with average length of 38.86cm.mean daily growth in fresh water treatment was 3.39. in brackish water replication the average daily . average condition factor in fresh water was 2.41. The average value CF in breackishwater was 1.39. in this research was survival rate in the fresh water and breackish water were more 77%.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Cyprinus carpio ; Cultivation ; Freshwater ; Brackishwater ; Earthen ponds ; Rearing ; Carp ; Specimens ; Growth
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 53pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 76
    facet.materialart.
    Unknown
    Influence of food attractants (methionine, lysine and alanine) on sturgeon larvae and fingerlings nutrition (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The objective of this study was to determine the influence of food attractants (methionine, lysine and alanine) on growth performance and survival rates of Acipenser percicus larvae and fingerlings during the acclimation period to the formulated diets. A total of 3300 Acipenser percicus larvae and 1500 Acipenser percicus fingerlings with the initial mean weights of 0.4±0.09 (mean±SD) and 1.8±0.3 (mean±SD) g, respectively were randomly distributed into 30 aerated plastic tanks of 30 L capacity for larval stage and 50 L capacity for fingerling stage provided with a water flow rate of 0.2 litre per second. This study was conducted at the International Sturgeon Research Institute for two periods of 62 and 70 days over two years. Nine iso-caloric diets were formulated to contain 0, 1 and 3 % of three amino acids methionine, lysine and alanine. In addition, a diet containing 50 % of plant protein supplemented with 3 % of methionine, lysine and alanine was also formulated to compare the effects of plant-protein-based diet with the experimental diets so as to prepare a cost-effective practical diet for this species. Fish were fed each of the ten experimental diets and a completely randomized design in a 3×3 factorial arrangement was used for the experiment. At the end of the feeding trial, final weight (7.5 ± 0.3 g) in Persian sturgeon larvae fed M3L1A3 diet (3% methionine and alanine and 1% lysine) was significantly higher than those of fish fed the other experimental diets (p≤0.05) and then M1L1A3 diet (1% methionine and lysine and 3% alanine) was significantly better (p≤0.05) than other experimental diets. There were no significant differences (p≥0.05) in final weights among M1L1A1, M3L1A1, M3L3A1, M1L3A3 and M3L3A3 diets, while theses diets showed significant differences in final weight with fish fed plant-protein-based diet (3.2±1 g) and without amino acids supplemented diet (M0L0A0) (3.6± 0.4 g). Based on final weigh obtained from Persian sturgeon fingerlings, there were significant differences (p≤0.05) between M3L3A3 (3% methionine, 3% lysine and 3% alanine) (11.1±3.6g) and M3L1A3 (3% methionine, 1% lysine and 3% alanine) (10.4±3.1g) diets with M1L1A1, M1L3A1, M1L1A3, M0L0A0 and plant-protein-based diets. Results of final weigh in fingerling stage also indicated that there were no significant differences (p≥0.05) among M1L1A1 (7±1.2 g), M3L1A1 (8.6±1.6 g), M1L3A1 (7±0.5 g) and M1L1A3 diets (6.6±1.0 g) with M0L0A0 (5.8±1.8 g) and plant-protein-based diets. Analysis of total length in Persian sturgeon fingerlings indicated that there were no significant differences (p≥0.05) among treatments. The highest total length (12±1.6 cm) was recorded in fish fed M3L1A3 diet. Results obtained from this study revealed that young growing Persian sturgeon has greater requirements for methionine in diet, while lysine and alanine at the levels of 1 and 3% for Persian sturgeon fingerlings and at the level of 3% for larvae stage show the same effects on growth performance. Hence, it may be concluded that the dietary alanine and lysine requirements for sturgeon larvae during the acclimation period to formulated diet is estimated to be more than 1 %. No significant differences were observed in survival rates in sturgeon larvae and fingerlings among treatments.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Acipenser persicus ; Larvae ; Fingerlings ; Food attractants ; Methionine ; Lysine ; Alanine ; Growth ; Survival ; Sturgeon ; Nutrition
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 62pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 77
    facet.materialart.
    Unknown
    The study of cyst formation in bisexual strains of A. urmiana, A.franciscana and parthenogenetic strians of A. Pakistan, A.turkmenistan in laboratory conditions (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The study was conducted to achieve growth, survival and reproductive characteristics of four Artemia populations (A.urmiana , A.franciscana , Pakistan strain and Turkmanestan strain). In this study, The strains were cultured under the same and static environment in laboratory condition. All cysts strains were hatched using the standard methods and the nauplii from the populations were cultured in laboratory condition using 80 g/L salinity , 25±1 ºC with photoperiod ( 12L: 12D) and Dunalliella tertiolecta were fed. The growth and survival of artemia were determined on days 8, 11, 14 17 and 20 of culture. Randomly, The adult population were placed in 50 ml conical falcons and reproductive characteristics were determined. The results revealed that the survivorship A. franciscana had the highest survival (%99.8) and A.turkmanestan lowest survival (%92.1) The results revealed that the in growth rate while pakistanian strain had the highest growth rate(8554 micron). The results revealed that the reproductive characteristics in each population of species , the highest cyst production were observed in A urmiana, A.franciscana and A.turkmanestan strains and the highest nauplii production was due to pakistanian strain. The highest production were observed in A. franciscana and lowest production were observed in turkmanestan strain.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Artemia ; Strain ; Survival ; Growth ; Reproduction ; Population ; A.urmiana ; A.franciscana ; Culture ; Dunalliella tertiolecta
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 57pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 78
    facet.materialart.
    Unknown
    Evaluation growths and survival indexes of vaccinated Litopenaeus vannamei against white spot virus syndrome (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Nowadays, white spot virus disease is serious threat for breeding and culture industry of shrimp. In this study was increasing resistance of shrimp against white spot virus by using modern methods such as shrimp vaccination with inactivated viruses and recombinant proteins. The aim of this study were determine the growth and survival rates vaccinated and non-vaccinated of Litopenaeus vannamei (5 to 15 and 12 to 26 day), that were challenged with white spot virus in 40 and 60 day rearing. This study consisted two separate groups were vaccinated and non-vaccinated with 11 treatments experimental and each of replicate was stocked 1000 pieces by post larva of 5 to15 and 12 to 26 day. After vaccination, two groups of post larvae exposed to the white spot virus at 40 and 60 day, one groups no exposure to the virus. Samplings were randomly of shrimp in 40, 60 and 80 days 10 pieces each of treatment experimental and measured mean of weight and length. Also, number of deaths was recorded at morning and evening daily and calculated survival rate at the end of study. The results showed growth rate of post larvae vaccinated (5 to15 day) which exposed to white spot virus at 40 and 60 was significantly lower than non-vaccinated of post larval, while the growth rate of post larval exposed to virus in 60 day was significantly increased. On the other hand, growth rate of post larval vaccination (12 to 26 day) exposed to virus in 60 day compared with post larval vaccination (5 to 15 and 12 to 26) exposed to virus in 40 and 60 days was significantly increased. Hence, growth rate was significantly increased in post larval vaccinated (5 to 15 and 12 to 26) which non-exposed to virus. Although the survival rate was post larval vaccinated (12 to 26 days) exposed to virus Post larvae in 60 day higher than post larval were exposed to virus in 40 and 60, but no significant differences were observed. However, relative mortality of post larval vaccination in 12 to 26 day compared with post larval vaccination in 5 to 15 days exposed to virus were significantly lower. Considering growth and survival index was improved of post larval vaccination can be concluded that the optimum age for vaccination against white spot virus of L.vannamei was 12 to 26 day.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: White spot virus ; Litopenaeus vannamei ; Vaccination ; Growth ; Survival rate
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 45pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 79
    facet.materialart.
    Unknown
    Global population structure of the great sturgeon (Huso huso) in the southern part of the Caspian sea with emphasis on the Golestan Province (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Report of the project entitled "determination of the global population structure of the great sturgeon (Huso huso) with emphasis on the Golestan Province" is in front of your attention. Outcome is the results of study on the samples collected from the total catch in the landing sites namely Bandar-e-Anzali, Babolsar, and Ashooradeh, in the three Northern provinces. 224 specimens were collected according to the sampling manual during the fishing seasons in 2005 and 2006. Three methods were applied in this study to find out the population structure of the great sturgeon in the southern Caspian Sea. These were as follows: Morpho-metric meristic Population dynamics Population genetics (microsatellite loci) Results indicate that the range of different age groups of the great sturgeon in the Golestan Province is larger than the other two provinces. Results show that the older age groups are found in the samples from the Golestan Province rather than the other two provinces. Results demonstrate that the sample size for the two methods (morpho-metric meristic and population dynamics) is not enough. In order to obtain precise results with less uncertainty one needs to collect more specimens. Therefore, according to the few number of the great sturgeon in the total sturgeon landing, it is recommended that researchers apply methods other than the two methods which are mentioned above in order to make sure that the results are most reliable. Population genetics methods including microsatellite loci are among the methods which could produce good results with minimum bias in this regard. Results indicate that there are two distinguishable populations of the great sturgeon (Huso huso) in the southern part of the Caspian Sea off the shores of the three Northern provinces. Results also show that these two populations are scattered in the two east end (Golestan Province) and west end (Guilan Province) of the southern Caspian Sea. The two populations have overlapped each other in the Mazandaran Province.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Population ; Sturgeon ; Huso huso ; Sampling ; Morpho-metric ; Samples ; Meristic ; Genetic ; Microsatellite ; Specimens
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 79pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 80
    facet.materialart.
    Unknown
    Rearing of Indian Craps fries to 1g weight in earthen ponds (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: 30000 juvenile Indian majour carps (Labeo Rohita,Cirhinus merigala, Catla catla) imported (2007 and 2008) and transferred to the earthen ponds in Astaneh Fisheries Research Station (Gilan ) and Sheiban Resaerch center (Khozestan) , In order to assess the viability of rearing fry up to 1 gram fingerlings under the climatic condition of north and south part of Iran . Growth parameters from the larval stage to 1 g were studied also .The fry with 300 mg weight, were released in to 3ponds.specimens were separated to tree experimental categories. fishes were fed with artificial food and also with the natural products of the ponds which were enriched with organic fertilizers, after being equally stocked in the ponds .During the experiment, oxygen level ,PH, turbidity, and temperature were measured . Monthly fry samples were taken, for weight and length biometrical analysis and also determination of the weight gain percentage, average daily growth rate, specific growth rate. Results have indicated adaptations and considerable growth in this species, with an increase from the initial weight of 300 mg to an average of 13.5±1.6 mg in 50 days period until the end of November for fingerlings.Catla was gain 1 g. during 15 day while Roho and Merigal were gain 1 g. during 14 and 10 days respectively. Results revealed that the Indian majour carps compatibility with the condition in Gilan province was succesfull and the combination of species and optimization of their compatibility specialy in other provinces like Sistan and Baluchestan were remind for futhre studies.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Indian carp ; Growth ; Labeo Rohita ; Cirhinus merigala ; Catla catla ; Juvenile ; Earthen ponds ; Fisheries ; Fry ; Fingerlings ; Artificial food ; Oxygen level ; Turbidity ; Fertilizers
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 48pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 81
    facet.materialart.
    Unknown
    Stock assessment of the bony fishes in Iranian coastal waters of the Caspian Sea (2007-2010) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In the years 2007-2007, 2008-2009 and 2009-2010 the exploitation of bony fishes resources (by 131 beach seines) started on 12 October but finished on 9 April, 9 April and 13 April, respectively. During these periods the total catch of bony fishes were 23537.8, 20045.5 and 18664.8 tonnes, respevtively. During these periods, kutum predominated and represented the highest proportion of total catch at 73.1, 74.0 and 66.9% , followed by golden grey mullet at 18.3, 13.9 and 18.7%, respectively. K values calculated 0.22, 0.15 and 0.14 year-1 and L∞ were 66.0, 62.7 and 70.0 cm for kuttum, golden grey mullet and common carp, respectively. The instantaneous coefficient natural mortality were estimated as 0.386 and 0.35 year-1 for kutum and golden grey mullet, respectively. During three periods, the exploitation rates were 0.789, 0.584 and 0.614 for kutum and 0.71, 0.75 and 0.61 for golden grey mullet, respectively. In the years 2007-2007, 2008-2009 and 2009-2010, the total biomass, from the biomass-based cohort analysis were 56600, 62090 and 61590 tonnes for kutum and and MSY estimated about 24733.7 and 8550.4 tones for kuttum and 11040, 11900 and 14460 tonnes for golden grey mullet, respectively. The ABC (acceptable biological catch) were estimated as 8000 and 2200 tonnes.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Bony fishes ; Growth ; Mortality ; Biomass ; Acceptable biological catch ; Kutum ; Golden grey mullet ; Common carp ; Coastal waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 96pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 82
    facet.materialart.
    Unknown
    Study on effects of physical , biological and chemical parameters on growth and bloom-forming of dinoflagellates Cochlodinium polykrikoides (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The red tide, as a natural phenomenon, has been frequently occurred in the Persian Gulf and Oman Sea coastal waters. Harmful algal blooms of Cochlodinium polykricoiedes were first observed in August 2007 and coincided with massive aquatic organisms’ mortalities and have caused substantial economic losses and negative effects on the aquatic environment in the Persian Gulf. The objective of this study was to evaluate direct control or mitigation of C. polykricoiedes blooms through physical (flocculation with clay; 0.5, 1.0, 1.5, 2, 4 and 10 g L-1), biological [6 seaweeds; fresh and extract (aqueous and methanol)] and chemical (hydrogen peroxide, potassium permanganate, copper sulfate, acetic acid and sodium hypochlorite; 0.05, 0.1, 0.5,1 and 1.5 g L-1) treatments. The results of the physical assay showed that the growth of C. polykricoiedes was strongly inhibited by using clay slurry in 4 or 10 g L-1. The removal efficiency of C. polykricoiedes by clay was 99% after 24 hour. The seaweeds showed the most mitigation effect on C. polykricoiedes using aqueous extract was C. sinnosa, using mixed aqueous and methanol were S. illicifolium , U. lactuca and G. corticata, fresh tissue were E.intistialis ، C.sinuosa , H.valentiea , and culture filtrate of E. intistialis. The results clearly showed that the flocculants; potassium permanganate, copper sulfate, acetic acid and sodium hypochlorite had the highest removal efficiency (100%) of C. polykricoiedes cells in the lowest concentration (0.05 g L-1). Overall, our experiments suggest that using clay and seaweeds as a control strategies could be considered for HABs in the Persian Gulf coastal waters.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Biological ; Chemical ; Harmful algal bloom ; Cochlodinium polykrikoides ; Isolation ; Optimum growth parameters ; Growth ; Mortality ; C. polykricoiedes ; C. sinnosa ; S. illicifolium ; U. lactuca ; G. corticata ; E.intistialis ; C.sinuosa ; H.valentiea
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 109pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 83
    facet.materialart.
    Unknown
    A Survey on environmental effects of shrimp pond culture effluents in Gwatar area (Sistan & Blouchestan) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Present project was conducted in shrimp farm located in east of Chabahar in Sistan and Balouchestan province.Twentieth sampling stations at three locations (i.e. 2 stations in supply channel,13 stations in drainage channel and 5 stations in Gwatar Gulf) were selected to determine physical and chemical factors such as; temperature, salinity, dissolved oxygen, pH, nitrate, nitrite, ammonia, phosphate and biological parameters for example Chlorophyll a, phytoplankton and zooplankton. Sampling was conducted once a month from March 2003 until January 2004. The results revealed different bioenvironmental area in the three locations (i.e. supply channel, drainage channel and Gwatar Gulf) over the study period. Concentration of salinity ,pH , nitatr ,nitrite ,ammonia and chlorophyll a in drainage channel were more than supply channel and Gawtar Gulf. While concentation dissolved oxygen and phosphate were in drainage channel less than Gawtar Gulf.Also, sediment with small grain size (clay and silt) caused uptake phosphate and amount phosphate decreased in drainage channel. Considering with lack of environment standards in Iran shrimp effluent, data compared with others countries standard. Results showed that with considerable farm area , value of temperature , salinity , dissolved oxygen and pH were in permit range in Gwatar Gulf while concentation nitrate, phosphate and chlorophyll a were sometimes more than permit range that could cause plankton bloom.Also, Gwatar Gulf were influence monsoon. Nitate , phosphate , chlorophyll a and phytoplankton increased in gwatar Gulf.Regards with that postmonsoon was simultaneus with shrimp harvest.Therefore, increase some parameters could be caused from shrimp effluent or postmonsoon. Thirty four phytoplankton genus were identified including diatoma, dinoflagellate , cyanophyta and chlorophyta. In each area maxiumum percentage of phytoplankton were belonged to diatoma( 63%) in supply channel , cyanophyta(51.7%) in drainage channel and dinoflagellate (94.5% ) in Gwatar Gulf.Amount and range chemical and physical factors and plankton composition were different in drainage channel , supply channel and Gwatar Gulf. Cyanophyta could grow more in drainage channel.Percentage of aboundance and diversity of phytoplankton changed in 2002 inrelation to years ago( before shrimp culture , 2000 year and 2001 year) specially in Gwatar Gulf.Mainly percentage of zooplankton were copepoda and thintinida respectively.Diversity zooplankton decreased ratio to years ago. In drainage channel , abundance total of phytoplankton and zooplankton were more than Gwatar Gulf and supply channel.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Environmental ; Chemical ; Environmental effect ; Shrimp culture ; Survey ; Sampling ; Temperature ; Salinity ; Dissolved oxygen ; pH ; Chlorophyll a ; Phytoplankton ; Zooplankton ; Diatoma ; Cyanophyta ; Chlorophyta ; Copepoda
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 87pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 84
    facet.materialart.
    Unknown
    Stock assessment of Sturgeon fishes in the southern part of Caspian Sea (Iranian water) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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 nm2 , in the summer and winter 2007 survey was 1854 , 2912 specimens nm2 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 nm2 at depths at depths above 10 m. CPUA for sturgeons in the spring 2009 survey was 300 specimens nm2 at depths less than 10 m and 307 specimens nm2 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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: 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: Report , Refereed
    Format: 154pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 85
    facet.materialart.
    Unknown
    Effect of feeding times and stocking size on growth and food conversion rate of rainbow trout in brackish water (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: An experiment were conducted to evaluate The effect of feeding frequencies and stocking size on growth and feed conversion ratio (FCR) of rainbow trout (O. mykiss) in brackish water for 102 days. Three stocking sizes (10, 25 and 40 g/fish) of rainbow trout and three feeding frequencies (feeding fish twice, three times and four times per day) were examined as the same time. Fish were fed at a restricted feeding program according to the rainbow trout standard table in the definite times during the light period. The results showed that in the group with 10 g initial weight increasing the feeding frequency, some growth factors like final weight, daily growth, and weight gain. But the other factors such as food conversion rate (FCR) and specific growth rate (SGR) decrease. It means in this group (10 g) two times feeding per day is not enough for an acceptable growth rate. In the two other groups with (initial weight 25 and 40 g) although by increasing the feeding frequency, some growth factors a little increase but these differences in 95% level (p≤0.05) are not significant. Therefore in rainbow trout culture with initial weight at least 25 g two times feeding per day was enough. The results of carcasses analysis of fish, showed that by increasing the feeding frequency there were no significantly difference at 95% level between the body compositions in all of treatments. With connivance of feeding frequencies, the best FCR was in the group with 10 g initial body weight and there was not any significant difference in SGR. So according to the results, it suggests that fish should be stocked with 10 g initial body weight.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rainbow trout ; Feeding frequency ; Brackish water ; Growth ; FCR ; O.mykiss ; SGR ; Culture ; Body weight ; Conversion rate ; Body compositions ; Size
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 45pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 86
    facet.materialart.
    Unknown
    Physical and chemical and biological investigation of Ghanat and agricultural wells water sources to encourage cold water fish farming in khorasan provivce ( bardestan city) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Seasonal survey on 404 water sources including Ganat, agricultural wells and Sheshtaraz river on Bardaskan city (Khorasan province) were conducted among which 47 were selected for biological and physical and chemical study in order to determine the aquaculture of them. The results showed that according to classic classification the Macrobenthose could be categorized into three branches of Arthropod, Annelid and Mollusk. The Chironomidae was the culminate species have been observed in all situation. 30 species of phytoplankton from five families have been recognized where the family of Clamydomonase and Cyclotella were the dominated group. Also eleven group of zooplanktons identify in which Rotatoria with Brachionus continual the dominate group and genus. Chemical analysis of central and northern region of Bardaskan showed to be fresh water and soft to moderate hard with electrical conductivity of less than 0.7 ms/cm. In the desert region in the western and southern side of Bardaskan salinity and hardness increase which comprised from Oligosaline to mesosalin (EC: 0.4 to 7.3 ms/cm). The whole region the pH varied between 7.2 to 8.6 and the average oxygen concentration was 8.2 mg/l with respect the agricultural use of water we suggest that pond ual purposes can be used for trout culture during October to March.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Ground water ; Arthropod ; Chironomidae ; Macrobenthose ; Brachionus ; Rotatoria ; Physical ; Chemical ; Biological ; Investigation ; Agricultural ; Cold water ; Fish
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 97pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 87
    facet.materialart.
    Unknown
    A Study on Stocks of Five Tuna Species in Hormuzgan Province Waters 1397-99 (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Studying and analyzing traditional & industrial data and biological factor estimation of five tuna species (LOT, KAW, FRI, YFT, SKJ,) in Hormuzgan province in 1377 and 1378 execute-l the quota of traditional catch section is 1377 is 14087 tonnes constitute 76% LOT KAW, FRI, 2.2% and in 1378 is 16384 tonnes constitute LOT, KAW, 2.2% FRI and 027% Y FT. Most of them caught by drift gillnet. The quato of SKJ in these year is less than 500 kg. The quota of industrial catch section belonging to purse-seiners Azadegan I & 2 in1377 is 1699 tons constitute 47% LOT, 42% YFT, 11% other species and in 1378 is 21 13 tons constitute 62% LOT, 37% YFT, 0.5% SKJ and 0.5% other species. Catch rate of these purse-seiners are 9.3 in 1377 and 10.4 in 1378 tons per fishing days. Biological parameters (K, In, M, F, Z, E) and relationship between fork length-weight & Gill girth-fork length were estimated annually. Major spawning season of LOT obtained in summer with a peak in mordad.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Tuna fishes ; Growth ; Mortality ; CPUE ; Spawing season of LOT ; Stocks
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 196pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 88
    facet.materialart.
    Unknown
    Genetic variation study on the grey mullet (Mugil cephalus) stocks from Mediterranean Sea, the Pacific Ocean and Oman Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Two of the three objectives of project was carried out success that one of them is following: The genetic diversity of Liza salien(Risso,1810) in the south part of Caspian sea using the Mitochondrial DNA sequencing (mtDNA) was carried out as first objective of project that based on the mitochondrial DNA sequencing (mtDNA) of 16S rRNA was used in order to clarify genetic structure and genetic diversity of lizasaliens in three western (Anzali) , middle(sari) , and eastern(Gomishan lagoon) of south part of Caspian sea. As a result we obtained 552base pairs of 16SrRNA sequence. A total of 6 different haplotypes and 29 variable sites were identified .The average nucleotide diversity(π) and haplotype diversity(h) in samples of all regions were 0.29 , and 0.004 respectively . The results obtained from genetic distance showed low rate in that of 3 regions. Estimates of gene flow indicated there is no reproductive isolation between three regions and also there was not significant genetic differentiation between differentregions (p〉0.05). the findings from the present study suggest that there is equal population of Liza saliens in the studied regions .: Genetic differences and phylogenic relationships among six Mugilidae species (Mugilcephalus, M. capito, Liza subviridis, L. saliens, L. aurata, Valamugilbuchanani) were determined using PCR-sequencing as second objective of project. M. cephalus, L. subviridis, and V. buchanani from the Persian Gulf and Oman Sea, and L. aurata and L. saliens from the Caspian Sea were collected. Samples of an imported, Egyptian species M. capito (this species was mixed with the main imported species as M. cephalusfingerling) were obtained from the Gomishan Research Center in Gorgan. Total DNA from the samples were extracted according to phenol-chloroform method Mithochondrial DNA ,16s RNA was amplified using thermo cyclermachine with universal primers and thensequenced by sending to Takapoozist Company and thereafter to France. Analysis of the sequences showed great differences between Mugil species and the other studied species. The phylogenetic tree obtained through Neighbor-Joining method revealed that L. saliensandL. aurata were in the same branch while L. subviridis was in a separate branch. In contrast, Maximum Parsimony tree located L. subviridis and L. aurata in a single branch and assigned L. saliens to a distinct branch. This result brings in the question of monophyletic origin of the genus Liza.Also.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Mugillidae ; Phylogeny ; Population ; mtDNA ; PCR ; Genetic variation ; Grey mullet ; Mugil cephalus ; Diversity ; M. capito ; Liza subviridis ; L. saliens ; L. aurata
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 118pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 89
    facet.materialart.
    Unknown
    The study of diversity, distribution and abundance of Zooplankton in the southern of Caspian Sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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./m3 and 180.58±149.03 mg/m3in 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./m3 and 47.07±31.96 mg/m3, 5281±5521 ind./m3 and 29.03±31.68 mg/m3 in 5m of summer and autumn seasons, respectively. Copepoda comprised more than 95 percent of marin zooplanktons in all of depths in these seasons. The most abundance and biomass were 19030±16518 ind./m3 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 marin zooplanktons in all of depths and the abundance of other groups was not considerable in zooplankton community.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Diversity ; Abundance ; Zooplankton ; Survey ; Density ; Biomass ; Population ; Distribution
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 99pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 90
    facet.materialart.
    Unknown
    Stock Assessment of Zobaidy, Pampus argenteus, in the North of Persian Gulf (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The project “Stock Assessment of Zobaidy, Pampus argenteus, in the North of Persian Gulf” started in April 2003 and completed by the end of April 2006 as a cooperative research project to assess the valuable stock of zobaidy shared between Kuwait and Iran in the North of Persian Gulf. The main objectives were to investigate and determine the basic biological parameters, the standing biomass, seasonal abundance, and the impact of regional fishery activities. These studies are necessary to recommend practical management policies and measures for long-term sustainability of the zobaidy stock. The sampling of fisheries data (catch, effort, fish length distributions, and biological data) was started in May 2003 and ended December 2006. Monthly length frequencies data were collected from both the drift gill net and shrimp trawl fisheries. Age determination was based on otolith sectioning, polishing, etching, and staining method. The age groups ranged from 0 to 10 yrs but the dominant age groups were 1-3 years and the estimated parameters for both sexes were L∞ = 32.0-36.0 cm FL and K = 0.26-0.30 yr-1, females grow faster than males. Sea survey on board of two dhow boats was carried out using swept area method. Higher abundance was always obtained in Kuwait Bay rather than the other areas surveyed in Kuwait and Khuzestan waters. The total estimated stock biomass in the surveyed areas varied from 42 t in January 2004 to 2,633 t in November 2004, while the Iranian biomass varied from as low as 19 t in October 2005 to 295 t in November 2003. The data indicated that Ras Al-Gaid, Bubiyan Island is the main nursery area in Kuwait waters, while Lifah, Busaif, and Bahrakan are important nursery areas in the Khuzestan waters. Kuwait Bay and Khor Musa are considered important spawning grounds and should be protected. Yield per recruit analysis showed that higher yield could be gained with increasing fish effort, which is not recommended under the present status of high exploitation rate. In contrast, virtual population analysis indicated that future catches will reduce if the fishery continues with present level fishing effort. A reduction of 50% would be required to maintain the present level of catches as well as to enhance the stock biomass. Formulation of a joint advisory management committee would be advisable approach to manage and monitor the zobaidy stock in the region. This will need commitment from the three countries in the region for data collection on regular basis on length frequency, statistics, and biological data. Copepods with high occurence of 64% - 88% is considered as the main item in the Pomfret fish, while jelly fish and other decapods crustaceans are considered as minor items. Observation of pre- flexion stage larvae of pampus genus among the specimens collected from Khuzestan coast water could be considered as an evidence for the spawning of this fish in this region. The occurrence of pampus larvae in Khuzestan coast during the months of June to October has been reported for several times. Examination of 101 specimens (38 from Kuwait, 63 from Iran) for molecular survey does not show any significant differences between Kuwait and Iran water stocks for this fish, so it is possible to hypothesize a unit population for zobidy stock in Persian Gulf and Oman Sea as whole.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Pampus argenteus ; Zobaidy ; Stock assessment ; Growth ; Food ; Molecular study ; Biomass ; Fishery ; Sampling ; Survey ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 146pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 91
    facet.materialart.
    Unknown
    Possibility of trout farms efluent return to groundwater In non-agricultural seasons (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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-NO2:0.003-.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,NO2,CO2,HCO3,CO3,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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physical ; Chemical ; Microbial ; Effluent Trout ; Return ; Ground Water ; Non-agricultural ; Aquaculture ; Pollutants ; Heavy metals ; Samples ; Chlorine ; Sulfate ; Sodium ; Potassium
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 88pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 92
    facet.materialart.
    Unknown
    Hydrology and Hydrobiological monitoring in the Northeastern part of the Persian Gulf and Strait of Hormoz (Hormozgan Province Water) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Hydrology and Hydro-biological monitoring in the Northeast Persian Gulf and strait of Hormuz (Hormozgan Province waters) were conducted during 2003-2004.The project was implemented using R/V Ferdous.The sampling area included the stretch of the Iranian waters along the northeast part of the Persian Gulf and Strait of Hormuz in Hormuzgan province. Along this stretch 7 equally distributed transect at a distance of 40 miles from one another were designated ; 3 main sampling stations at a distance of 20 miles from one another were fixed at each transect. Sampling was conducted twice per annun from Feb . 2003 to Feb. 2004. Summer & winter values of some Physico-chemical factors in surface layers of Hormozgan waters were recorded as follows: Temprature 33±0.082 , 21.8±0.67 ?c ; EC 66.1±1.52 , 53.3±0.66ms/cm ; Salinity 37.9±0.54, 37.8±1.6 ppt , Density 22.9±0.39 , 25.5±0.99 kg/m3, Dissolved oxygen 5.4±0.26 , 6.7±0.35 ppm ; pH 8.2±0.02 , 8±0.03 ; chlorophyll-a 0.7±0.4 , 1.3±0.72 mg/m3 and Turbidity 6.1±0.92 , 5.7±0.67 FTU. According to the result a seasonal thermocline appears in the Iranian waters during summer and disappear during winter, extended with its maximum formation in summer . The temperature differences between surface and bottom waters was 12?C. The thermocline diminishes near the Strait of Hormuz area, horizontal and vertical distribution recorded. Increase in salinity and density from northeast towards northwest and from surface to depth. Electrical conductivity depends on temperature in summer but in winter depend on salinity. Dissolved oxygen was higher in the layer of 5-20m and decrease with increasing depth. Maximum chlorophyll-a was recorded in layers of 10-30m and 5-20m in summer and winter respectively. The density of nutrients increase from surface to depth but decrease from northeast towards northwest and density of nutrients in winter was higher than summer show write how much. Plankton population in this study characterized by 4 phylum and 5 classes of phytoplankton, 6 phylum and 8 classes of zooplankton and 23 family of Ichthyoplankton. Total 63 spices of phytoplankton belonging to 43 Bacillariophyceae, 14 Dinophyceae, 4 Cyanophycea, one Chrysophycea and one Euglenaphycea. Bacillariophyceae inparticular show very high density in winter 83 and Euglenaphycea is dominant group only in winter. Crustaceans were the most dominant group of zooplankton. Calanoids and Cyclopoids were abundant at all stations. Zooplankton were increase from East to West. Among Ichthyplankton, Clupeeiidae family the most abundant, the Gobiidae was in second position and followed by Engrauliide with high density than other family. All together 124 genera belong to 132 families of macro-benthos were identified. As they consist of 59 genera belong to 49 families of Polychaete, 27 genera belong to 44 families of gastropod, 23 genera belong to 27 families of Bivalve, 15 genera belong to 10 families and 2 order of Crustacean and 2 families of Scaphopoda. Additionally some groups of Echiurida, Sipunculida , platyhelminenthes, Echinodermata, Foraminiferans, Cnideriars,Chordata, Cheatognatha and Lophophora were identified. The most dominant groups were Crustacean and Polychaetes in percentage of abundance proportion of studies in last years .The mean biomass of macrobenthos has been decreased to 4.7 g/m. Note: Some species of macro-benthos identified up to family
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Hydrology ; Hydro - biological ; Physico-chemical ; Seasonal Thermocline ; Oxicline ; Holocline Macro-Benthos ; Plankton ; Ichthyoplankton ; Nutrients ; Sampling ; Temprature ; Salinity ; Dissolved oxygen ; Population ; Phylum ; Cyanophycea ; Chrysophycea ; Euglenaphycea ; Echiurida ; Sipunculida ; Platyhelminenthes ; Echinodermata ; Foraminiferans ; Cnideriars ; Chordata ; Cheatognatha ; Lophophora
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 126pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 93
    facet.materialart.
    Unknown
    Investigaion on biodiversity and population structure of Astacus leptodactylus in southern habitates of caspian sea (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The present investigating was carried out to determine crayfish population in north waters of Iran
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Cray fish ; Population ; Brackish water
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 270pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 94
    facet.materialart.
    Unknown
    Planning and establishment of the laboratory information database system for Iranian fisheries research organization (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Due to lack of access to comprehensive and up-to-date information regarding equipment, personnel, laboratory services tariffs and chemicals in the laboratories of Iran Fisheries Research Institute and felt the necessity of having this information for optimal management of the laboratories, it was decided with regard to all information needs in this area and using previous experiences in this regard as well as the experiences of other institutions and related organizations at the national (and even international) level, the system would be designed. The main purpose of implementing this plan was to establish and implement a software system based on web technology to create a comprehensive database of the Fisheries Research Institute's laboratories, so that in addition to organizing information, using periodic reports on various related areas a more appropriate monitoring and management system could be applied. Fortunately, after the design and implementation stages, the system in early January 2011 was fully applicable. The main parts of this system include portal; database; advanced data entry, search and reporting capabilities; direct tests order system and discussion forums.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Laboratories ; Information Database System ; Fisheries ; Chemical ; Portal ; Iranian Fisheries Research Organization
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 38pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 95
    facet.materialart.
    Unknown
    Biometric, Morphologic & life cycle studies on three Artemia populations from Iran (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The pupose of the present study was morphological characterization of different Artemia populations from Iran......
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Artemia ; Lake ; biometry ; Growth ; Survival
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 190pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 96
    facet.materialart.
    Unknown
    The production of all-female in rainbow trout (Oncorhynchus mykiss) using indirect feminization (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The sex reversal technique in fish is widespread in many countries. The development of these techniques is desirable because rainbow trout males reach their gonad maturity earlier compared to the females. Rainbow trout alevins were treated with 17α-methyltestosterone incorporated in the diet (0.5. 1.5, 3, 6 and 10 mg/kg) for 60 days from the beginning of first feeding. Sex was determined at 180 and 680 dpf by sampling fish (n = 20) from each group and examining gross gonadal morphology under a dissecting microscope. Also sex reversal ratio and growth performance were determined in hormone-treated groups. These sex reversed functional males were reared for brood stock until they attained sexual maturity. At the end of experiment, normal rainbow trout eggs were fertilized with the sperms taken from sex reversed males for producing all-female populations. Examination of the results showed that 17α- methyltestosterone was effective in all treatment. The highest sex reversal ratio with 100% was observed in group treated with 0.5, 1.5 and 3 mg/kg 17α- methyltestosterone. The highest live weight ratios were observed in groups fed with 6, 0.5 17α-methyltestosterone and control group. Female progeny produced from the sex reversed males were 100 % in all males that sired offspring. All female trout stocks produced by this method have advantage in rainbow trout culture since the fish is not meant for direct human consumption and is used to generate brood stock, therefore, difference of growth parameters do not influence the success.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Sex differentiation ; Oncorhynchus mykiss ; Sex reversal ; Hormone treatment ; 17-αmethyltestosterone ; Female ; Population ; Steroids ; Gonad ; Maturity ; Rainbow trout ; Sexual
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 38pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 97
    facet.materialart.
    Unknown
    Identification and distribution of mullets in the coastal water (intertidal zone) of Bushehr province northern Persian Gulf (2008-2009) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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 m2) 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 m2). 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 m2 and minimum in March (Esfand) 3 per 100 m2. Mean biomass for this species was estimated 27.724.2 shells per 100 m2. 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).
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Identification ; Distribution ; Mullets ; Stock assessment ; Biomass ; Growth ; Mortality ; Samples ; Species
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 80pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 98
    facet.materialart.
    Unknown
    Comparison of growth and survival rate between import and native rainbow trout (Oncorhynchus mykiss) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Rainbow trout is only species of cold water fishes which is rearing and propagation in Iranian fishery farms. Along of develop aquaculture industries increase request of best produces such as trout eyed eggs and larva. For this reason fishery farmers must be to provide that the way of import of other countries, such as: Denmark, Norway and France. As for this importance subject and unknown basic information about preference ratio for doing it, we needed to study about that to answer the suppliant questions. In this study carried out 3 test groups (3 treatments with 3 repetitions) and compared specific growth rate (SGR), condition factor (CF) and survival rate (SVR) between in this groups. Statistical analysis were significantly difference of increase rate of length and weight in French group with other groups (p〈0.05). Compared of main factors (SGR, CF, SVR) in French test group were significantly difference with other groups (p〈0.05). Survival rate percentage in Iranian treatments (SVR=%67) were significantly with the others (p〈0.05). This ratio respectively in Danish and French treatment was %54 and %48.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Oncorhynchus mykiss ; SR ; CF ; SGR ; Growth ; Survival rate ; Rainbow trout ; Species ; Cold water ; Rearing ; Fishery ; Aquaculture ; Larvae
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 40pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 99
    facet.materialart.
    Unknown
    Study and evaluation of economical and hygienic effects of aflatoxin B1 in cultured Huso huso (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In the present study, the impacts of various concentrations of Aflatoxin B1 (AFB1) on Beluga, Huso huso, under controlled conditions were investigated. Belugas (120±10 g) were fed diets containing 0, 25, 50, 75, and 100 ppb AFB1/kg of diet for 3 months. Results showed that various levels of AFB1 do not significantly affect the specific growth ratio (SGR) (p〈 0.05) of fish in different treatments. However, weight gain and food conversion ratio (FCR) varied significantly (p〈 0.05 between control and treatments with diets contaminated with 75 and 100ppb AFB1/kg after 90 days). The increase in level of AFB1 did not affect the percent of survival rate (SR) and no mortality was observed in treatments (SR=100%). Various levels of AFB1 under experimental conditions of the present study affect some growth factors, such as, weight gain and FCR but have no significant impact on SGR. Histopathological studies showed that different level of AFB1 can cause broad range of changes in liver, kidney, spleen and gills tissues, particularly at concentration of 75 and 100 ppb AFB1/kg of diets after 60 days. No tumor formation observed. With regard to toxin concentration and time of exposure to AFB1 in experimental fish, different degree of skin lesions (simple hemorrhage to progressive wounds) were observed in different parts of body especially in vent, caudal peduncle, fins, and head. "Yellow sores" on head and trunk regions are considerable and led to deterioration of appearance. Prevalence of skin lesion in different treatments was 8 -53.3 %, which after stop feeding with toxic diets, 16-24 % healing observed. Haematological changes included chronic anemia and lymphocyteopenia. Also neutrophilia observed with increasing of skin lesions. Meat accumulation of AFB1 in different treatments is not so considerable and harmful for human consumption, but is significantly different with control fishes (P〈0.01).
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Economical ; Huso huso ; AFB1 ; Growth ; Skin lesions ; Pathological changes ; Haematological changes ; Meat residue ; Aflatoxin ; Beluga ; Liver ; Kidney ; Gills ; Evaluation
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 116pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 100
    facet.materialart.
    Unknown
    Stimulation of osmoregulation system and comparison growth performance of Rutilus Kutum (less than a gram) with using salty diet at freshwater (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In this research was used sodium chloride in feed supplement to stimulate ion- osmotic regulation system of Rutilus Kutum juveniles (about one gram) in fresh water environment.The purpose of this experiment was to improve survival and growth ability of juveniles’ fish in brackish water during times of transition. The initial average weightes of Juveniles’ fish were 0.91±0.01 g (mean±SE). Experiments carried out in two phases. In step one, the Juveniles’ fish were kept for 15 days in fresh water and fed with commercial diet plus NaCl supplement (control without NaCl supplement, 5, 7 and 10 percent) in four treatments, each treatment inclusive three replication. In the second step, the fish transferred to brackish water (12.5 psu) and fed for 28 days with a commercial diet (without NaCl supplement). The results showed that no change compared to control treatment in renal tissue in step one. The difference between the kidneys were not in fish fed with NaCl supplement and without it. Nevertheless, a significant difference was observed between the size of the glomeruli and renal tubules between fresh and brackish water environments (between stage one and two), (P〈0.05). In step one, were observed in the gill accessory cells in treatments fed salt supplements. At the end of the second step, the number of gill chloride cells in fish fed with salt supplementation was more than control (P〈0.05). In addition, the highest and lowest weight gain was obtained in treatment two and four respectively (P〈0.05), and no significant difference was observed between control and treatment 3 (P〉0.05). The results showed that the fish fed dietary supplements of sodium chloride 10% versus the control treatment had less weight gain. Therefore, the was obtained the highest weight gain and growth performance (condition factor, specific growth rate) and the highest feed efficiency and protein efficiency ratio and the lowest feed conversion ratio in treatment 2 with the feeding of 5% NaCl in dietary supplements.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rutilus Kutum ; Juvenile ; Salinity ; Turbidity ; Growth ; Gill ; Kidney
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 56pp.
    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...