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  • Aquaculture  (13)
  • 1
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    Study of genetic diversity of wild Caspian trout Salmo trutta caspius in the Sardabrud and Astara Rivers, using D- Loop region sequencing (2018)
    Details
    Publication Date: 2021-05-19
    Description: In this study the genetic diversity of wild Caspian trout (Salmo trutta caspius) in the Sardabroud and Astara Rivers was evaluated using D- Loop region sequencing. For this purpose, 35 specimens of adult Caspian brown trout were collected from these rivers in the Mazandarn and Gilan Provinces in fall and winter 2011. Approximately 3-5 g of soft and fresh fin tissue was isolated and fixed in ethanol 96% and then transferred to the Caspian Sea Ecology Research Center Genetics Laboratory in Sari, Iran. Genomic DNA from the samples was extracted using Ammonium Acetate Method. The quality and quantity of the extracted DNA were assessed by spectrophotometer and agarose gel (1%) electrophoresis. Polymerase Chain Reaction (PCR) was performed on the target DNA using a primers sequence D- Loop region of mtDNA molecule. Then the product was purified and DNA sequencing was carried out using chain termination method. The D- Loop region of Caspian trout contained 654 bp. Data were analyzed using Bio-Edit, DnaSP, Arlequin and Mega software. 20 and 15 haplotypes was observed in Sardabrud and Astara River. Tthe DNA sequence of one of them was recorded in Gene Bank with numbers KC991027 and KF015727. 223 and 240 polymorphic loci were detected in Sardabrud and Astara River that all of them were out of Hardy- Weinberg equilibrium (p〈0.05). Average nucleotide and haplotype diversity were 0.127±0.067, 1.000±0.005 in Sardabrud River and 0.118±0.063 and 1.000±0.005 in Astara River.
    Description: Published
    Keywords: Aquaculture ; Genetic diversity ; Salmo trutta caspius ; Sequencing
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.352-365
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  • 2
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    The effects of different dietary levels of organic and inorganic selenium on some growth performance and proximate composition of juvenile rainbow trout (Oncorhynchus mykiss) (2018)
    Details
    Publication Date: 2021-05-19
    Description: Selenium, a trace mineral complement is used as cofactor of antioxidant enzymes that protects fishes against environmental stress agents and enhances performance in fishes. In this study the different levels of organic and inorganic source of selenium were included in juvenile rainbow trout diet to evaluate feed conversion ratio (FCR), specific growth rate (SGR), weight gain percent (WG), condition factor (CF), survival rate (SR) and proximate analysis of the fillet during 60 days of the experiment. The fishes were allotted to 9 treatment groups including, Tc the fishes were fed diet without any selenium, control group, To1, To2 ,To3 and To4 the fishes were fed different dosages of inorganic selenium and Ti1, Ti2, Ti3 and Ti4 those were fed different dose of inorganic Se in their diet. Results showed that To4, showed the highest level of WG from 50±2.8 to 168.54± 25.56 g in comparison to Tc (134.38± 27.26g) (p〈0.05). Average initial total length of fishes (19± 1.12 centimeters) increased to 21.1± 1.12 cm in Tc and 22.46± 1.25 cm in To4 significantly (p〈0.05). Among all treatments, FCR, SGR, WG, CF and SR were improved in To3 group. Also carcass protein increased in To4 (32.58±1.22%) on the contrary of Ti4 (22.43±1.51%) (p〈0.05). As a general conclusion, dietary incorporation of organic selenium at 0.45 mg/kg showed satisfactory results in some growth parameters and was a useful supplement in salmonid fish diets.
    Description: Published
    Keywords: Aquaculture ; Onchorhyncus mykiss ; Organic selenium ; Inorganic selenium ; Rainbow trout ; Proximate composition ; Growth ; Juvenile ; Growth performance ; Dietary ; Organic ; Growth rate
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.238-251
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  • 3
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    Effects of Zingiber officinale powder on growth parameters, survival rate and biochemical composition of body in juvenile common carp (Cyprinus carpio) (2018)
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    Publication Date: 2021-05-19
    Description: This study was conducted with different levels (0, 0.25, 0.5,1,2 g) of Zingiber officinale powder per 100 g of common carp commercial diet. Feed was offered for 8 weeks by the post pelleting liquid spraying method. Results showed that there were significant differences in all growth parameters and body composition except in survival rate, Gain Weight Percent (GW%) ,SGR and NFE between treatments (p〈0.05). Significant differences were also detected in GW % between control group and the last two treatments but there were no significant differences in SGR index between control group and the group fed diets containing 2 g ginger/per100g diet (p〈0.05). No significant differences were observed in their length, growth, survival rate as well as NFE (p〉0.05). Also, Kruskall-Wallis test found significant difference in the amount of carbohydrate and body fiber (p〈0.05). The best results for growth performance, protein, lipid, and energy were found in the group fed maximum dosage of ginger powder in carp commercial diet and lowest values for these parameters were seen in the control group. Additionally, there were high amount of carbohydrate and low amount of fiber in this group. Higher level of ash was reported in the third treatment. We may therefore conclude that using Z. officinale at higher levels can be an efficacious medicine to improve quality and quantity of juvenile Cyprinus carpio growth and muscle.
    Description: Published
    Keywords: Aquaculture ; Zingiber officinale ; Cyprinus carpio ; Growth parameters ; Body composition ; Survival rate ; Biochemical ; Juvenile
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.67-85
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  • 4
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    Site selection for coldwater fish culture using GIS in Golestan province of Iran (2021)
    In:  http://aquaticcommons.org/id/eprint/23677 | 18721 | 2018-07-17 03:42:43 | 23677 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: In an attempt to provide a scientific basis and to discern data gaps for sustainable aquaculture expansion, we conducted a land evaluation and land use planning study to delineate areas suitable for coldwater fish culture complexes in the Golestan Province of Iran. The study was based on systematic land evaluation, a modified version of the McHarg cartographic method drawing upon ecological, social and economic factors. The minimum mapped area was 1.25t1.25Km and the Province was classified into suitable, medium, poor and unsuitable units. Elevation, slope, aspect, hydrography, temperature, evaporation, lithology, pedology, landuse, proximity to roads, protected areas and water resources were the factors included in the study. We successfully applied the method to the Province that resulted in distinguishing areas suitable for coldwater fish culture. Of the factors included in the study, proximity to roads was found to play important role in allocating an area to the activity. Also, slope, elevation, water temperature and evaporation were the other factors that helped in discerning the areas. We found that some parts of the province are amenable to the expansion of the aquaculture activities. Of the surface area of the Province, around 53 kilometers were found to be suitable for the culture. Also, 54 kilometers were moderately suitable and 68 kilometers were poorly suitable for the activity.
    Keywords: Aquaculture ; Fish Culture ; Freshwater ; Area ; Site selection ; Cooling water ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 35-44
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  • 5
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    Effects of Zingiber officinale powder on growth parameters, survival rate and biochemical composition of body in juvenile common carp (Cyprinus carpio) (2021)
    In:  http://aquaticcommons.org/id/eprint/23008 | 18721 | 2018-06-12 19:57:18 | 23008 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-12
    Description: This study was conducted with different levels (0, 0.25, 0.5, 1, 2 g) of Zingiber officinale powder per 100 g of common carp commercial diet. Feed was offered for 8 weeks by the post pelleting liquid spraying method. Results showed that there were significant differences in all growth parameters and body composition except in survival rate, Gain Weight Percent (GW%), SGR and NFE between treatments (p〈0.05). Significant differences were also detected in GW% between control group and the last two treatments but there were no significant differences in SGR index between control group and the group fed diets containing 2 g ginger/per100g diet (p〈0.05). No significant differences were observed in their length, growth, survival rate as well as NFE (p〉0.05). Also, Kruskall-Wallis test found significant difference in the amount of carbohydrate and body fiber (p〈0.05). The best results for growth performance, protein, lipid, and energy were found in the group fed maximum dosage of ginger powder in carp commercial diet and lowest values for these parameters were seen in the control group. Additionally, there were high amount of carbohydrate and low amount of fiber in this group. Higher level of ash was reported in the third treatment. We may therefore conclude that using Z. officinale at higher levels can be an efficacious medicine to improve quality and quantity of juvenile Cyprinus carpio growth and muscle.
    Keywords: Aquaculture ; Biology ; Fisheries ; Zingiber officinale ; Cyprinus carpio ; Growth parameters ; Body composition ; Survival rate ; aquaculture ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 67-85
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  • 6
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    Effect of different light regimes on the maturational progress of the whitespotted rabbitfish (Siganus sutor) (2021)
    In:  http://aquaticcommons.org/id/eprint/22658 | 18721 | 2018-05-09 22:16:02 | 22658 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-08
    Description: In this study, the effects of different light regimes on the reproductive activity of a typical Indo-Pacific coral reef rabbitfish, Siganus sutor, were evaluated. Forty-five adult fish were exposed to nine different photoperiod (8L: 16D, 12L: 12D, 16L: 8D) and light intensity (1000, 2000, 3000 lux) combinations with three replicates and five other fishes reared under indoor light condition (Control). Gonadosomatic Index (GSI) and Hepatosomatic Index (HSI) were calculated after 60 days and compared among different experimental regimes in males and females. In the control group, GSI and HSI mean values were 4.67 and 3.24%, respectively, for females and 10.05 and 2.10%, respectively, for males, and these fish showed differences in comparison with the exposed fish. Females kept under 1000 and 2000 lux light intensities had a higher GSI mean value (9.26 and 10.39%, respectively) and also lower average HSI (2.10 and 2.31%, respectively) in 16L: 8D treatment. A similar result was also obtained for males, whereas the 3000 lux light intensity, 8L: 16D day length combination led to more gonadal development (GSIs of 16.41% in females and 12.03% in males). A comparison of results among different photoperiods also confirmed that maturation was induced better in fish maintained under 16L: 8D in both sexes. This investigation revealed the visible role of both photoperiod and light intensity on inducing maturity in the whitespotted rabbitfish, S. sutor. Thus, rearing of adults exposed to an artificial light regime, including 16L: 8D and 2000 lux light intensity, promotes more gonadal development than that occurring in the wild.
    Keywords: Aquaculture ; Biology ; Fisheries ; Photoperiod ; Light intensity ; GSI ; HSI ; rabbitfish ; Siganus sutor ; Persian Gulf ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 916-927
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  • 7
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    Evaluation of different dietary protein and energy levels on growth performance and body composition of narrow clawed crayfish (Astacus leptodactylus) (2021)
    In:  http://aquaticcommons.org/id/eprint/22493 | 18721 | 2018-04-13 09:23:14 | 22493 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-06
    Description: Nine practical diets containing increasing percentages of crude protein (CP) and energy (30%, 35%, 40% and 300kcal/100g, 370kcal/100g and 450kcal/100g) were fed to narrow clawed crayfish (mean individual weight=17±2.3 g) during an 8 week feeding trial. Weight Gain, Feed conversion ratio (FCR), Protein Efficiency Ratio (PER), Net Protein Utilization (NPU), Daily Food Consumption (DFC) and body composition of tail-muscle meat of narrow clawed crayfish were determined. At the conclusion of the experiment, comparing the growth parameters in response to interaction between protein and energy levels demonstrated that dietary number 2 (30/370) resulted in higher WG, NPU, PER, and the lowest FCR whereas dietary number 3 (30:450) showed higher SGR and DFC. Comparison of the body composition results indicates the greatest amount of protein absorption in diet number 2 (30/370). Results from this study indicate that narrow clawed crayfish can be fed a practical diet containing 30% protein and 370 Kcal/100gr. Reducing CP levels in narrow clawed crayfish diets may help reduce operating costs and thereby increase producers’ profits.
    Keywords: Aquaculture ; Biology ; Narrow clawed crayfish ; Astacus leptodacthylus ; Protein level ; Energy level diet ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 63-77
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  • 8
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    The effects of different dietary levels of organic and inorganic selenium on some growth performance and proximate composition of juvenile rainbow trout (Oncorhynchus mykiss) (2021)
    In:  http://aquaticcommons.org/id/eprint/23032 | 18721 | 2018-06-15 19:16:55 | 23032 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-12
    Description: Selenium, a trace mineral complement is used as cofactor of antioxidant enzymes that protects fishes against environmental stress agents and enhances performance in fishes. In this study the different levels of organic and inorganic source of selenium were included in juvenile rainbow trout diet to evaluate feed conversion ratio (FCR), specific growth rate (SGR), weight gain percent (WG), condition factor (CF), survival rate (SR) and proximate analysis of the fillet during 60 days of the experiment. The fishes were allotted to 9 treatment groups including: Tc the fishes were fed diet without any selenium, control group; To1, To2, To3 and To4 the fishes were fed different dosages of inorganic [sic] selenium; and Ti1, Ti2, Ti3 and Ti4 those were fed different dose of inorganic Se in their diet. Results showed that To4, showed the highest level of WG from 50±2.8 to 168.54± 25.56 g in comparison to Tc (134.38± 27.26g) (p〈0.05). Average initial total length of fishes (19± 1.12 centimeters) increased to 21.1± 1.12 cm in Tc and 22.46± 1.25 cm in To4 significantly (p〈0.05). Among all treatments, FCR, SGR, WG, CF and SR were improved in To3 group. Also carcass protein increased in To4 (32.58±1.22%) on the contrary of Ti4 (22.43±1.51%) (p〈0.05). As a general conclusion, dietary incorporation of organic selenium at 0.45 mg/kg showed satisfactory results in some growth parameters and was a useful supplement in salmonid fish diets.
    Keywords: Aquaculture ; Biology ; Fisheries ; Organic selenium ; Inorganic selenium ; Rainbow trout ; Proximate composition ; Growth ; aquaculture ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 238-251
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  • 9
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    The comparison of growth rate, survival and food conversion ratio in Penaeus semisulcatus and Fenneropenaeus indicus in Helleh site, Bushehr province (2021)
    In:  http://aquaticcommons.org/id/eprint/23676 | 18721 | 2018-07-17 03:38:27 | 23676 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: Growth rate, survival and food conversion ratio were compared for two species of shrimp Penaeus semisulcatus and Fenneropenaeus indicus in Bushehr Province in summer 2002. The research was done with two treatments each in three replications in 0.4 ha ponds. Twenty five post larvae of the shrimps in stage PL ^ (12) with a mean weight of 5mg were stocked per square meter of the ponds and cultured for 109 days. We found significant differences during the first 31 days in SGR between P. semisulcatus and F. indicus (P〈0.05). The mean final harvest rate was 903.33kg and 1025.00kg in each pond for P. semisulcatus and F. indicus, respectively. No significant differences in physical and chemical parameters were observed between the two species.
    Keywords: Aquaculture ; Growth rate ; Juveniles ; Weight ; Length ; Survival ; Marine crustaceans ; Food conversion ; Marine ; Shrimp culture ; Crustacean culture ; Pond culture ; Cultured organisms ; Fenneropenaeus indicus ; Penaeus semisulcatus ; Bushehr ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 27-34
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  • 10
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    Effects of Daphnia magna and Artemia nauplii on growth performance in Persian sturgeon Acipenser persicus larvae (2021)
    In:  http://aquaticcommons.org/id/eprint/22262 | 18721 | 2018-03-06 08:51:13 | 22262 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-01
    Description: This study was carried out in a completely randomized design 3×3×4 factorial arrangement in three periods of rearing in spring 1997. Density of 300 larvae was assigned for each oval tank with 0.1m2 surface area, 30cm deep, a volume of 20lit and 0.25 lit/min of water flow per minute at Shahid Rajaie fish breeding and culture center in Sari, north of Iran. The fries were divided into three groups according to their feeding regimes and fed with each of Artemia or D. magna separately, and mixture of the two (50% Artemia+50% Daphnia) in ratioes of 80, 100 and 120% of their body weights in the first period and 30,50,70% of their body weights in the second and third period of rearing. Each period lasted 72 hours. The result indicated, significant differences (p〈0.005) between food organisms, body weight gain and Food conservation Ratio (FCR) in the first and third period of rearing. The highest body weight gain was found in 120% food ratio in the first period. The best survival rate achieved with fries feeding at 70% body weight of Artemia nauplii and mixed food in the second period of rearing. The highest growth rate, survival rate and the best FCR obtained when Artemia fed as live food to fries. There were no significant differences between Artemia and mixed food in this study. It seems that mixed food (50% Artemia +50% Daphnia) given at 70% of larval body weight results in a better performance.
    Keywords: Aquaculture ; Biology ; Fisheries ; Daphnia magna ; Artemia ; Acipenser persicus ; Growth ; performance ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 103-115
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