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  • 1
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    A study on the bacterial infections of freshwater crayfish (Astacus leptodactylus) in the Aras reservoir (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Astacus leptodactylus is an important economical fisheries resource of Aras dam reservoir, in Iran. The infection of freshwater crayfish by gram negative and gram positive bacteria is often observed in natural and cultural environments which are considered as secondary disease agents or opportunities. This study was conducted to investigate infection conditions on 70 crayfish from the Aras reservoir regarding the bacterial agents by culturing from hemolymph in aseptic condition on Blood Agar, Trypton Soya Agar (TSA) and Cytophaga Agar The study was performed by biochemical tests. In this study Aeromonas hydrophila, Staphylococcus aureus, Micrococcus luteus and Flavobacterium johnsonaewere isolated and determined. According to the results of this study which was performed for first time on Aras reservoir freshwater crayfish, the percentage of crayfish which carried bacteria in hemolymph were variable ( 20-58.5%). Also, the gram negative bacteria particularly Aeromonas hydrophyla were dominant among the bacteria isolated from studied crayfishes.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Freshwater ; Crayfish ; Bacterial infection ; Aeromonas hydrophila ; Staphylococcus aureus ; Micrococcus luteus ; Flavobacterium johnsonae
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 32pp.
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  • 2
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    A study on the parasites (protozoan and metazoan) of freshwater crayfish (Astacus leptodactylus) in the Aras reservoir (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25684 | 18721 | 2018-10-08 09:11:18 | 25684 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Aras reservoir freshwater crayfish is an important economic fisheries resource of West Azarbaijan, Iran. This study was concluded to evaluate the prevalence of parasitic infestation of Crayfish in this area during different seasons of 2012. Among 390 different sizes of Astacus leptodactylus which were examined, arrange of ectocommensals or ectosymbionts from a number of different phyla including 9 phylum and 11 class infested the different anatomic units of the surface and appendages such as gills, head , thorax, abdomen, walking legs, uropod, telson, antennae and antennulae of freshwater crayfish. Common groups such as peritrich ciliates, suctorian ciliates, free living nematodes, branchiobdellids, and Algae, copepods, rotifers and oligochaetes have also been observed in association with freshwater crayfish.
    Keywords: Fisheries ; Health ; Iran ; Aras dam ; West Azarbaijan ; Crayfish ; Freshwater ; Parasitic andcommensal infestation ; Astacus leptodactylus
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 58
    Location Call Number Expected Availability
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  • 3
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    Unknown
    A study on the bacterial infections of freshwater crayfish (Astacus leptodactylus) in the Aras reservoir (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25600 | 18721 | 2018-10-07 16:21:40 | 25600 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Astacus leptodactylus is an important economical fisheries resource of Aras dam reservoir, in Iran. The infection of freshwater crayfish by gram negative and gram positive bacteria is often observed in natural and cultural environments which are considered as secondary disease agents or opportunities. This study was conducted to investigate infection conditions on 70 crayfish from the Aras reservoir regarding the bacterial agents by culturing from hemolymph in aseptic condition on Blood Agar, Trypton Soya Agar (TSA) and Cytophaga Agar The study was performed by biochemical tests. In this study Aeromonas hydrophila, Staphylococcus aureus, Micrococcus luteus and Flavobacterium johnsonaewere isolated and determined. According to the results of this study which was performed for first time on Aras reservoir freshwater crayfish, the percentage of crayfish which carried bacteria in hemolymph were variable ( 20-58.5%). Also, the gram negative bacteria particularly Aeromonas hydrophyla were dominant among the bacteria isolated from studied crayfishes.
    Keywords: Health ; Iran ; Aras dam reservoir ; Freshwater ; Crayfish ; Bacterial infection ; Aeromonas hydrophila ; Staphylococcus aureus ; Micrococcus luteus ; Flavobacterium johnsonae
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 32
    Location Call Number Expected Availability
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    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    A study on the parasites (protozoan and metazoan) of freshwater crayfish (Astacus leptodactylus) in the Aras reservoir (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Aras reservoir freshwater crayfish is an important economic fisheries resource of West Azarbaijan, Iran. This study was concluded to evaluate the prevalence of parasitic infestation of Crayfish in this area during different seasons of 2012. Among 390 different sizes of Astacus leptodactylus which were examined, arange of ectocommensals or ectosymbionts from a number of different phyla including 9 phylm and 11 class infested the different anatomic units of the surface and appendages such as gills, head , thorax, abdomen, walking legs, uropod, telson, antennae and antennulae of freshwater crayfish. Common groups such as peritrich ciliates, suctorian ciliates, free living nematodes, branchiobdellids, and Algae, copepods, rotifers and oligochaetes have also been observed in association with freshwater crayfish.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Crayfish ; Freshwater ; Parasitic andcommensal infestation ; Astacus leptodactylus
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 58pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
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