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  • Aquaculture  (8)
  • Density  (7)
  • Chemistry
  • Fisheries
  • Iran
  • 2015-2019  (18)
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Keywords
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Years
Year
  • 1
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    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.
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  • 2
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    A survey on effects of shrimp aquaculture on the coastal waters of Bushehr (Helleh region) (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This survey was designed in the Helleh region, to understand effects of aquaculture industry on coastal waters of Busher, in 2000. Sediment and water samples were collected from effluent canal, influent canal and sea during the 7 month period (harvest and post harvest season). The variations of selected water quality parameters were controlled monthly. Results show that, in effluent canal, estimated parameters of water was higher than other stations every month, and tend to decreased after being discharged into the sea and got closed to normal level. Comparison of above data with permit able range of municipal and aquaculture waste and comparison of present data with data of normal condition of region, show that, aquaculture industry of Helleh region has not had any obvious negative effect on the coastal waters of Bushehr, in the culture year of 2000.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Survey ; Aquaculture ; Sediment ; Samples ; Culture ; Coastal waters ; Shrimp ; Parameters ; Water quality ; Comparison
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 65pp.
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  • 3
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    Effect of partial replacement of dietary fish meal with soybean meal on some hematological and serum biochemical parameters of juvenile Beluga, Huso huso (2018)
    Details
    Publication Date: 2021-05-19
    Description: This study was conducted to investigate the effects of partial replacement of dietary fish meal with soybean meal (SBM) on some blood and serum parameters of Beluga (Huso huso) juveniles. Three isonitrogenic and isoenergetic diets, as SBM1 (Soybean meal protein (SBP): Fishmeal Protein (FP) =1:3), SBM2 (SBP: FP = 2: 3) and SBM3 (SBP: FP =1: 1) were fed to triplicate groups of fish. After 8 weeks feeding on the experimental diets, blood parameters were measured. The results revealed that of partial replacement of dietary fish meal with soybean meal had no effect on, leukocyte (WBC) levels, red blood cell counts (RBC), mean corpuscular volume (MCV), mean cellular hemoglobin (MCH) or mean cell hemoglobin concentration (MCHC) (P〉0.05). However, hemoglobin (Hb) concentration and hematocrit (Hct) values were significantly decreased by increasing dietary soybean meal (P〈0.05). Serum glucose had significantly affected by increasing soybean meal. While total protein, phosphorus or calcium remained unaffected between groups. These results indicated that partial replacement of dietary fish meal with soybean meal could affect on some haematological and biochemical parameters in beluga which should be studied in future.
    Description: Published
    Keywords: Aquaculture ; Huso huso ; Beluga ; Blood parameters ; Soybean meal ; Fish meal ; Juvenile ; Biochemical ; Parameters ; Hematological ; Serum ; Dietary ; Phosphorus
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.348-356
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  • 4
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    An investigation of effects of varying densities of red algae (Gracilaria corticata) on Algal growth parameters in fiber glass culture tanks (2018)
    Details
    Publication Date: 2021-05-19
    Description: Possible effects of varying densities of cultured red algae Gracilaria corticata on algal growth parameters were studied using three density treatments 500, 1000 and 20002 g/m2 in nine culture tanks. We conducted the experiment in April to June 2002 and carried out daily tests of salinity, pH and temperature which were in the range 37-40ppm. 0.5-8.04 and 23-32 degrees centigrade. Epiphytes such as Nitzschia, Navicula and Hypnea and grazers such as Amphipoda, Isopoda and Nereis were detected in the tanks during the experiment. We observed the highest daily growth and net production in treatment one (500g/m2) to be 3.74±0.31 and 38.3±5.4 respectively and the lowest measurements were seen in treatment three (2000 g/m2) recorded as 3.74±0.31 and 38.3±5.4 respectively. Daily growth measurements were significantly different among treatments (P〈0.05). Net production as significantly different between treatment one as a group and other treatments (P 0.05). This was not the case between treatments and three.
    Description: Published
    Keywords: Red algae ; Gracilaria corticata ; Algal growth ; Density ; Salinity ; pH ; Temperature ; Epiphytes ; Nitzschia ; Navicula ; Hypnea ; Growth ; Parameters
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.13-24
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  • 5
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    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.
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  • 6
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    Optimum management of warmwater fish FarmsStocking, Capacity determination, Growth rate and Brood stock managements and harvesting (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was conducted to codify the guideline and indexes of optimal management in warm-water fish farms to attain sustainable aquaculture which they are population density, species diversity, brood stock'smanagements, , capacity determination,growth and harvesting managements in cultural ponds. As results, these guideline and indexes were codifies for these fish farms and propagation centers.It's obviously that these sustainable patterns can be used for improving of permanent development for this aquacultural industry.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Brood stocks ; Warm Water ; Sustainable Aquaculture ; Population ; Density ; Species ; Diversity ; Growth ; Warmwater Fish Farms
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 45pp.
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  • 7
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    Some biological aspects of Thunnus albacares and Katsuwonus pelamis in Oman Sea (Sistan-o-Balochestan Province) (2018)
    Details
    Publication Date: 2021-05-19
    Description: Some biological aspects of yellowfin and skipjack tuna according to catch data of traditional gillnet fisheries were studied in the north of Oman Sea during 1997-99. Based on Gonadosomatic Index (GSI) results, the spawning period or yellowfin begins in spring and reaches to the peak level in May-June. For skipjack tuna, in addition to the above mentioned spawning period, the other observed period was found in autumn-winter with a peak in January-February. The first length or maturity (LM50%) of yellowfin and skipjack tuna females were estimated 76 and 61 cm, respectively. Observation of stomach contents showed that squid was the major components of diet for yellowfin and fish for skipjack tuna. A comparison between mean length of different years and landing sites using two-way analysis of variance indicated a significant differences, The length-weight equations showed an algometric growth in tuna and isometric growth in skipjack.
    Description: Published
    Keywords: Biological ; Thunnus albacares ; Katsuwonus pelamis ; Skipjack tuna ; Yellowfin Tuna ; Gillnet ; Fisheries ; Gonadosomatic Index ; GSI ; Spawning ; Algometric growth ; Isometric growth ; Fish
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.35-62
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  • 8
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    Bester (beluga ♀ × starlet ♂) production and comparing their growth with beluga in Iran (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Aquaculture for human consuming species is being considered as the first substitution of catching aquatic species due to increase of human population and decrease of wild aquatic stocks. In this study, the hybrid sturgeon Bester (female beluga x male sterlet ) was produced for the first time in Iran. Sperm of 1.35 kg male Acipenser ruthenus was used to fertilize the eggs of 125 kg female Huso huso in Shahid Marjani Sturgeon propagation center (Agh Ghala, Golestan province). The fries of bester and control treatment of beluga were transported to International Sturgeon Research Institute (Rasht) after about one month by reaching to 490 mg and 377 mg of weight respectively. All fishes fed by artificial concentrated food (48-50% protein and 15-17% fat) after a period of feeding with Artemia and Daphnia. Sorting was carried out according to increase of fish weight for both fishes. Results showed that the imported sterlet spawners were not at the high maturation stages and especially the males had not suitable sperm quality. It showed that up to 2 months of age , these was no significant difference between bester and beluga weight but from this age up to 2 months of age the weight of beluga was greater. Meanwhile from 2 months old up to the end of the study (21 months) the weight of bester sample was significantly greater than beluga. The comparison of FCR for the whole rearing period showed no difference between bester and beluga (2.4 and 2.3 respectively). In general, the increase and decrease pattern of GR and SGR were coincided to each other, but showed monthly differences. Growth rate (GR) and specific growth rate (SGR) of bester were greater than beluga from 4th and 3rd month of rearing period respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Aquaculture ; Beluga ; Sterlet ; Bester ; Growth Rate ; Aquatic ; Species ; Population ; Female ; Male ; Acipenser ruthenus ; Huso huso ; Sturgeon ; Artemia
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 55pp.
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  • 9
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    The study on culture of rainbow trout (Oncorhynchus mykiss) by new design of Foster - lucas ponds (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Intensive culture of rainbow trout, usually done using several different methods.The objective of this study was to compare fish performance and welfare in a new design of Foster-lucas ponds (FLP) and a raceway ponds (RP) under field conditions. Currennt study was designed in two treatment with three repeats. Each pond was randomly stocked by rainbow trout fish with initial average weight of approximately 51±5 g. Stocking density was 120n/m3 during study. After 10 months of trial, fish fed diets with comertial diet (Chineh Company). Feeding operation conducted according to the manuals by consideration of water temprature, fish waight and biomas. During the 10 months experiment, the fish survival rate was high (97.39 and 98.05%). No significant differences in growth parametres were observed between RP and FLP, but in all parametres FLP was higher than RP Final weight was 0.99% higher in FLP than in RP. Water quality factors (Dissolved oxygen, PH) was better in FLP. The results confirm that when water quality is maintained in safe level ranges, growth rate of rainbow trout attained in FLS are comparable to those in RP.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rainbow trout ; Oncorhynchus mykiss ; Fish culture ; New design of Foster-lucas pond ; Raceway ponds ; Culture ; Stocking ; Density ; Diet ; Feeding ; Temperature ; Biomass ; Growth ; Dissolved oxygen ; pH
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 39pp.
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  • 10
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    The density and distribution of the dominant Phytoplankton in the southern Caspian Sea (2018)
    Details
    Publication Date: 2021-05-19
    Description: The research project was comprised of four sampling cruises, which were carried out in summer 94; spring, autumn and winter 95 in the southern part of the Caspian Sea, where Chrysophyta (Diatoms) and Pyrrophyta were found to be the dominant phytoplankton. The maximum density of phylum Chrysophyta (Diatoms) was observed mainly during the autumn in the coast line (below 20 m) and in the central part of the southern Caspian Sea, while the highest density of phylum Pyrrophyta occurred during the spring in the subcoastal zone (below 50 m.). The dominant species in the phylum Chrysophyta (Diatoms) were Rhizosolenia calcar-avis, Thalossionema nitzschiodes, Sceletonema costatum, Cyclotella meneghiniane and three members of genus Coscinodiscus, among which R. calcar-avis had the highest density. Members of phylum Pyrrophyta, i.e. Exuvialla cordata, Prorocentrum scutellum and Glenodinium penardii had the highest density during the spring in the central part of the southern Caspian Sea, where E. cordata was the most abundant.
    Description: Published
    Keywords: Density ; Distribution ; Dominant ; Phytoplankton ; Chrysophyta ; Diatoms ; Pyrrophyta ; Rhizosolenia calcar - avis ; Thalossionema nitzschiodes ; Sceletonema costatum ; Cyclotella meneghiniane ; Genus ; Exuvialla cordata ; Prorocentrum scutellum ; Glenodinium penardii ; E . cordata
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.95-108
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