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  • 1
    Electronic Resource
    Electronic Resource
    Genetic Variation Within and Among Rainbow Trout, Onchorhynchus mykiss, Hatchery Populations from Iran Assessed by PCR-RFLP Analysis of Mitochondrial DNA Segments (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 68 (2003), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Samples were collected from 3 hatchery populations of 2 trout inbreeding centers (Kelardasht and Jajrood) and mitochondrial DNA (mtDNA) of these samples was studied by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). ND5/6 segment and a fragment that includes 12SrRNA, tRNA F, P, T, D-loop, and a part of cyt.b of mtDNA were amplified and investigated using different restriction enzymes. Two patterns were observed using HaeIII, AvaII, RsaI, TaqI, and Hinf enzymes on gel electrophoresis, resulting in 9 haplotypes in ND5/6 segment, whereas only 1 pattern was observed for the fragment containing D-loop. As a measure of intrapopulation diversity and interpopulation diversity, both heterozygocity and genetic distance were determined, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2003.tb08258.x
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  • 2
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    Morphometrics studies of Mahisefid (Rutilus frisii kutum, Kamensky, 1901) from selected rivers in the southern Caspian Sea (2018)
    Details
    Publication Date: 2021-05-19
    Description: Mahisefid, Rutilus frisii kutum , is a cyprinid fish which is distributed from Turkmenistan to Azerbaijan along the Caspian Sea. It is one of the economically important fish in the region. As part of the Iranian Fisheries Company’s policy to improve the stocks of this species, every year, fingerling of Mahisefid are released into the southern basin of the Caspian Sea. The main objective of this study was to determine populations in different of rivers. In total, 387 fish were collected from four rivers, including Lemir, Sefidrood, Shirrood and Tajan, where this fish migrates for spawning, in spring 2005. Thirteen conventional morphometric factors, 13 ratio and 12 Truss morphometrics were measured and calculated in this study. Conventional and Truss morphometric data were analyzed using two-way ANOVA Principal Component Analysis and discriminant. Average of coefficient of variation (CV%) of morphometric in males was 14.95, 10.28, 17.47 and 16.56 and in females was 21.35, 19.74, 18.25, and 19.74 in Lemir, Sefidrood, Shirrood and Tajan River, respectively, showing that all morphometric characters were significantly different (P〈0.05) among four sampling sites (populations). The first component of morphometrics 44.32% in males and 68.94% in females were positive, indicating that the conventional morphometric was good descriptor of the body shape variation among the populations, especially in females. The total cumulative variances were 76.6% and 87.8% in males and females, respectively, suggesting that this can be considered as a useful discriminator. The total cumulative variances were 64.27% and 64.21% in males and females, respectively. The first component of truss was 87.7% and 81.3% of the total variance, in males and females, respectively. The results of the present study suggest that each sampling site represents independent population in each river.
    Description: Published
    Keywords: Rutilus frisii kutum ; Conventional Morphometric ; Truss Morphometric ; Rutilus frisii kutum ; Principal Component Analysis (PCA) ; Mahisefid
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1-18
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  • 3
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    Study of site selection for Carp and Trout fish species for responsible aquaculture possibility (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This survey carried out from 2012 to 2013 to study of suitable site selection for carp and trout fish species for responsible aquaculture possibility by data collection and literature study.During the survey ecological factors including physical and chemical factors,geological factors including topography and type of soil,biological factors including selection of species and control of invader animals,climatic factors,geographical factors and pollutant including heavy metals,agricultural pesticides Surfactants and crude oils were recognized.Also in comparing with standard levels suitable rate of each important factor in aquaculture were studied.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Warm Water ; Fish ; Cold Water ; Ecological factors ; Biological factors ; Aquaculture ; Survey ; Carp ; Species
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 33pp.
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  • 4
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    Genetic diversity of Mahisefid (Rutilus frisii kutum Kamensky 1901) in different rivers of the south Caspian Sea using PCR-RFLP (2018)
    Details
    Publication Date: 2021-05-19
    Description: Mahisefid is the most popular fish in Iran with the highest economic value. The analysis of mitochondrial DNA has been extensively used as a marker for population genetic studies and is a powerful tool in studies of gene flow and evolutionary biology. Two hundred ninety four samples were collected from Sefid Rud River (100), Lamir River (98), Shir Rud River (48) and Tajan River (48) during spawning season. Out of 24 enzymes tested, four enzymes, namely TasI, HaeIII, HinfI and HincII were selected for this study. In the present study, the haplotype and nucleotide diversity of Mahisefid in four important rivers where fingerlings are produced, were carried out by using PCR-RFLP at mtDNA ND5/6 region. A total of 20 haplotypes were studied so that AAAA and BAAA haplotypes had the most frequency. The average haplotype frequency of AAAA and BAAA haplotypes were 29.93% and 27.55%, respectively. The maximum nucleotide diversity was 0.94%, the minimum was 0.80% and the average was 0.88%. Divergence between Lamir and Sefid Rud River and Shir Rud was 0.2% and between Lamir and Tajan, and Shir Rud River it was 0.1%. The average evolutionary distance was 0.015. The maximum evolutionary distance was 0.294 between ADAA and AAAB, ABAB and BDBA, BBAA and AABB. The average number of bases surveyed was 121.2 and the average number of fragments was 30.30. The study suggests that there was a low genetic variability in four populations of Mahisefid in the south of Caspian Sea. Mahisefid population can be divided into two main clusters, the first clade consists of Shir Rud River and Lamir River populations and the second clade consists of Tajan River and Sefid Rud River populations. The clustering of Mahisefid populations was not in accordance with their geographical areas or river systems.
    Description: Published
    Keywords: Rivers ; Rutilus frisii kutum ; Genetic characteristics ; mtDNA ; Enzymes
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.235-251
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  • 5
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    An audit of sturgeon reproduction in Iran over the years 1998 -- 2002 (2018)
    Details
    Publication Date: 2021-05-19
    Description: Iranian Fisheries Institutes in the north of the country are involved in the reproduction, culture and release of five species of sturgeon fingerlings into the Caspian Sea. The species are Acipenser persicus, A. guldenstadti, A. nudiventris and A. stellatus and Huso huso. Shahid Beheshti Fisheries Centre as the first commercial hatchery started its activities in 1972 in Rasht, Guilan Province of Iran. The centre achieved a production ceiling of 21.6 million fingerlings in 1997 and increased it to 24.5 million fingerlings in 1998. It is anticipated that the centre will achieve a threshold of 45 millions fingerlings in the next few years. During 1997-2002, the centre has increased its extent from 377 hectares to 887 hectares For Huso huso production, 17 specimens were caught in 1998, of which 10 were injected that produced 1.08 million fingerlings and in 2002, the number of caught and injected Huso huso were 29 and 21 respectively, that resulted in production and release of 2.4 million fingerlings. A number of 1062 A. persicus breeders were caught in 1998 of which 581 individuals were injected with hypophysis extract resulting in production and release of 22.5 million fingerlings. Of 538 injected individuals from among a total 802 breeder fish caught in 2002, a number of 12.3 million fingerlings were produced and released into the sea. The catch for Acipenser stellatus in 1998 was 193 breeders that produced 623000 fingerlings. In 2002, the catch increased to 290 breeders, of which 67 received injections to produce 1.3 million fingerlings. A total number of 0.67 million fingerlings of A. guldenstadti was produced in 1998 which was increased to 1.78 millions in 2002. For Acipenser nudiventris, the number of fingerlings produced in 1998 was 0.4 which was increased to 1.56 millions in 2002.
    Description: Published
    Keywords: Huso huso ; Acipencer persicus ; A. stellatus ; A. nudiventris ; A. guldenstadti ; Sturgeon fish ; Stock Enhancement ; Fingerlings ; Production ; Fisheries ; Species
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.97-112
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  • 6
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    Effects of hydrogen peroxide on fungal disinfection, hatch rate and larval deformities of rainbow trout (Oncorhynchus mykiss) (2018)
    Details
    Publication Date: 2021-05-19
    Description: The hydrogen peroxide in concentrations of 500, 750 and 1000 mu l/l, malachite green with usual concentration (1.5mg/l) and natural control treatments were examined to evaluate the antifungal effects of the chemicals on Rainbow Trout eggs. Hydrogen peroxide and malachite green treatments were performed after 48 hours after fertilization in every other day, until 4 days before hatch, each time for 15 minutes. During experiments, water parameters were measured which were 8.05~c0.55mg/l for dissolved oxygen, 8.8~c2.2 degree C for temperature, 7.9~c0.05 for pH, 132~c20mg/l for total hardness, and E.C was 336~c24 mu s/cm. The fungal infection was minimal in malachite green treatment and was significantly different with other treatments (P0.05). No significant difference in deformities caused by the treatments were observed (P〉0.05).
    Description: Published
    Keywords: Fungal diseases ; Oncorhynchus mykiss ; Disinfection ; Fish eggs ; Larvae ; Hatching ; Freshwater
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.163-168
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  • 7
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    Imprinting of White Fish (Rutilus frisii kutum) with Morpholine (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: During last two decades 200 millions of kutum fingerlings were released into the Caspian Sea Rivers annually. Morpholine as retrieving agent were used by many researchers for homing of fishes. To understand the effects of morpholine on fisheries return of kutum fishes a project with use of tagging method was approved in2004 and its first phase started in 2005. Brooders were selected from Khoshkrud River and breeding were done in shahid ansari hatchery, Rasht. Totally 15930 fishes were subjected for this study. 5480 fingerlings (4-5g.) were used for determining the dose effects of morpholine (3 treatments 5x10*-2,5x10*-5 ,5x10*-7 mg/lit) in return rate and homing of fishes. Results revealed that there were significant differences between kutum return rate exposed with 5x10*-5 mg/lit (0.62 %) with other treatments i.e. : 5x10*-7 ، (0.15%) and 5x10*-2 (0.37%) during the experimented period(P〈0.001). To determine the critical period for imprinting of morpholine 10450 kutum fishes were exposed to 5x10*-5 mg/lit of morpholine in different growth stages(yolk sac fry ,active fry, 2-3-g. fingerlings , 4-5 g. fingerling ).Results showed significant difference between kutum return rate in active fry stage(1 %) compare to other stages i.e. , yolk sac fry (0.23%) , 2-3- g. fingerling(0.23%) , 4-5 g. fingerling (0.26%) and control(0.13) during the tree years of experiment(P〈0.001). There were significant difference in sex ratio [M(1.42): F(1)] in recaptured kutums in khoshkrud river( x2=6.4 α= 0.05 df= 1).Recapturing rate were 6.7 % compare to recapture rate during last 5 year(5%) revealed that morpholine can be use for return rate enhancing of kutum.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Kutum ; Tagging ; Return rate ; Morpholine ; Rutilus frisii kutum ; Fingerlings ; Imprinting
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 80pp.
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  • 8
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    Changes in gill histology and mortality rate of juvenile Caspian Sea Brown Trout (Salmo trutta caspius Kessler, 1877) in different weights and water salinities (2018)
    Details
    Publication Date: 2021-05-19
    Description: Changes in gill histology and mortality rate of juvenile Caspian Sea Brown Trout Salmo trutta caspius Kessler-1877 in different weights and water salinities were studied. The indicators used in this study were the change in number and size of gill chloride cells as well as mortality rate of the juvenile trout. Juveniles weighing 2, 5, 10, 15 and 20 grams were directly transferred into water with salinities of 0, 4,8 and 12.5 gait and kept for 120 hours. Histological assessment showed that the number of gill chloride cells increases with the increase in weight and their size increases invisibly. Also, we found that the number of gill chloride cells is increased when salinity increases while the size of the cells undergoes an invisible downward trend. During the 120 hour test, mortality rate of the juveniles weighing 2 to 20 grams was zero in water salinities ranging 0 to 12.5 grilit. This supports the fact that the fish have a remarkable adaptability to changes in the environmental condition. Considering changes in the histology and mortality rate, it is concluded that the proper weight for release of juvenile Caspian Sea Brown Trout is 10 grams and the best water salinities is in the range 8-12.5 gr/lit, the same value found in the estuary.
    Description: Published
    Keywords: Salmo trutta caspius ; Weight ; Salinity ; Histological ; Salinities
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.119-128
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  • 9
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    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.
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  • 10
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    The fifth developing plan of Iranian Fisheries Research Institute (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Accurate scientific and practical plan for achieving the goals of the Islamic Republic of Iran within the framework of Vision development 1404 , is the infrastructure achieving sustainable development of the country . Order to achieve the above mentioned objectives and in order to the comprehensive development plans in the country, Iranian fisheries research organization adjust the fifth developing plan for support of executive related departments in country with mobilization a large number researchers consists of several working groups of ifro affiliated research centers . The fifth developing plan consist of three chapters for report of the forth developing plan and intrudction of research , construction plans and financial support (budjet) for period of 2011-2014 A.C .
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fisheries ; Aquaculture ; IFRO ; Developing plans ; Fisheries research
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 144pp.
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