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  • 1
    Publication Date: 2021-05-19
    Description: The study of microbial populations is a useful tool in understanding atzd applying control methods to improve the sanitary level of production in fish breeding and rearing centers ensure health of Sturgeon fingerlings at the time of their release into the rivers and also in the conservation and restoration of these valuable stocks in the Caspian Sea. In these research, bacterial study conducted on 3 Sturgeon species, A persicus, A.stellatus and A.nudiyentris during different growth stages. Also, parasitic jitna, investigated at fingerling stage. Oocyte examination indicated that frequency of Enterobacteriaceae (38%) was higher than Pseudomonadaceae (34.67%), Aeromonadaceae (16%), Moratellaceae (6%) and Vürionaceae (5.33%). In larval stage,the frequency of Enterobacteriaceae(31.34 %) was higher than Aeromonadaceae(29.33%) , Moraxellaceae (18 % ),Pseudomonadaceae (14 %) and Pfbrionaceae (7.33%). In fingerling stage, Vibrionaceae (44 %) Showed higher frequency Than Pseudomonadaceae (16.67%), Enterobacferiaceae(16 %) Aeromonadaceae(14 %) and Moraxellaceae (9.33%). 11 Incidences of Tricodina infection was observed in the 50 A. Stellatus specimens with 22 % Prevalence Among the 50 incidences was obsened 10 % (prevalence) of the specimens were infected with the parasite Diplostomum and 24 % were infected with the parasite Trichodina. However no signs of parasitical infection was observed in the 50 Nudiventris specimens examined in this study. The examination of 150 stained blood spreads prepared from the species showed no, signs of parasitical infection.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Bacterial ; Flora ; Parasitic ; Fauna ; Sturgeon ; Hatcheries
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 43pp.
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  • 2
    Publication Date: 2021-05-19
    Description: In 2001, we studied 2600 sturgeon fingerlings including: 2242 Acipenser persicus, 150 Acipenser stellatus, 150 Acipenser nudiventris and 58 Huso huso from Shahid Beheshti and Yousefpour hatcheries for parasitic infection. We found three parasites including Diplostomum spathaceum, Trichodina sp. and Gyrodactylus sp infesting the fish. The prevalence and average intensity of Diplostomum spathaceum was 5.49% and 1.66 for Acipenser persicus, 0.66% and 1 for Acipenser stellatus and, 22.41% and 5.38, for Huso huso fingerlings respectively. No Diplostomum infection was observed in Acipenser nudiventris. The prevalence and average infection intensity of Trichodina sp. was 45.05% and 76.14 for Acipenser persicus, 44% and 51.36 for Acipenser stellatus, 36% and 63.51 for Acipenser nudiventris, and 32.76% and 34.73 for Huso huso fingerlings, respectively. Totally, the prevalence of Gyrodactylus sp. was 0.46% in the two hatcheries. The prevalence of infection with Gyrodactylus sp. was 0.36% in Acipenser persicus and 2.66% in Acipenser stellatus.
    Description: Published
    Keywords: Parasites ; Fingerlings ; Earthen pond ; Sturgeon ; Diplostomum ; Trichodina ; Gyrodactylus ; Infection ; Acipenser persicus ; Acipenser stellatus ; Acipenser nudiventris ; Hatcheries ; Trichodina sp. ; Gyrodactylus spp ; Huso huso
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.55-62
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  • 3
    Publication Date: 2021-05-19
    Description: In 2001, we studied 2600 sturgeon fingerlings including: 2242 Acipenser persicus, 150 Acipenser stellatus, 150 Acipenser nudiventris and 58 Huso huso from Shahid Beheshti and Yousefpour hatcheries for parasitic infection. We found three parasites including Diplostomum spathaceum, Trichodina sp. and Gyrodactylus sp infesting the fish. The prevalence and average intensity of Diplostomum spathaceum was 5.49% and 1.66 for Acipenser persicus, 0.66% and I for Acipenser stellatus and, 22.41% and 5.38, for Huso huso fingerlings respectively. No Diplostomum infection was observed in Acipenser nudiventris. The prevalence and average infection intensity of Trichodina sp. was 45.05% and 76.14 for Acipenser persicus, 44% and 51.36 for Acipenser stellatus, 36% and 63.51 for Acipenser nudiventris, and 32.76% and 34.73 for Huso huso fingerlings, respectively. Totally, the prevalence of Gyrodactylus sp. was 0.46% in the two hatcheries. The prevalence of infection with Gyrodactylus sp. was 0.36% in Acipenser persicus and 2.66% in Acipenser stellatus.
    Description: Published
    Keywords: Sturgeon ; Trichodina ; Gyrodactylus ; Infection ; Acipenser persicus ; Acipenser stellatus ; Acipenser nudiventris ; Huso huso ; Diplostomum
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.55-62
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  • 4
    Publication Date: 2021-07-15
    Description: In 2001, we studied 2600 sturgeon fingerlings including: 2242 Acipenser persicus, 150 Acipenser stellatus, 150 Acipenser nudiventris and 58 Huso huso from Shahid Beheshti and Yousefpour hatcheries for parasitic infection. We found three parasites including Diplostomum spathaceum, Trichodina sp. and Gyrodactylus sp infesting the fish. The prevalence and average intensity of Diplostomum spathaceum was 5.49% and 1.66 for Acipenser persicus, 0.66% and I for Acipenser stellatus and, 22.41% and 5.38, for Huso huso fingerlings respectively. No Diplostomum infection was observed in Acipenser nudiventris. The prevalence and average infection intensity of Trichodina sp. was 45.05% and 76.14 for Acipenser persicus, 44% and 51.36 for Acipenser stellatus, 36% and 63.51 for Acipenser nudiventris, and 32.76% and 34.73 for Huso huso fingerlings, respectively. Totally, the prevalence of Gyrodactylus sp. was 0.46% in the two hatcheries. The prevalence of infection with Gyrodactylus sp. was 0.36% in Acipenser persicus and 2.66% in Acipenser stellatus.
    Keywords: Biology ; Health ; Sturgeon ; Diplostomum ; Trichodina ; Gyrodactylus ; Infection ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 55-62
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