Isolation and characterization of different bacterial agents from crayfish (Astacus leptodactylus) of Aras reservoir, Iran
نویسندگان
چکیده مقاله:
Freshwater crayfish (Astacus leptodactylus) is an important economic fisheries resource of Aras reservoir, Iran. The infection of freshwater crayfish by gram negative and gram positive bacteria are common in natural and cultural environments. These bacteria are considered as secondary disease agents or opportunities. This study was conducted to investigate infestation condition on 70 freshwater crayfish regarding the bacterial agents by culturing from haemolymph in aseptic condition on Blood Agar, Trypton Soya Agar (TSA) and Cytophaga Agar and was performed by biochemical tests. In this study Aeromonas hydrophila, Staphylococcus aureus, Micrococcus luteus and Flavobacterium johnsoniae were isolated and determined. According to the results which was performed for first time on Aras reservoir freshwater crayfish, the percentage of crayfish which carried the bacteria in haemolymph were variable (20-58/5%). Also, the gram negative bacteria particularly Aeromonas hydrophila were dominant among the bacterial isolates from crayfish.
منابع مشابه
Commensalism and parasitic infestation in crayfish (Astacus leptodactylus Eschscholtz, 1823) of Aras Dam Reservoir, Iran
The freshwater crayfish of the Aras Reservoir is an important economic fisheries resource of West Azarbaijan, Iran. This study was conducted to evaluate the prevalence of parasitic infestation of Crayfish seasonally in this area in 2010. Among 390 different sizes of Astacus leptodactylus which were examined, a range of ectocommensals or ectosymbionts from a number of different phyla including ...
متن کاملCommensalism and parasitic infestation in crayfish (Astacus leptodactylus Eschscholtz, 1823) of Aras Dam Reservoir, Iran
The freshwater crayfish of the Aras Reservoir is an important economic fisheries resource of West Azarbaijan, Iran. This study was conducted to evaluate the prevalence of parasitic infestation of Crayfish seasonally in this area in 2010. Among 390 different sizes of Astacus leptodactylus which were examined, a range of ectocommensals or ectosymbionts from a number of different phyla including ...
متن کاملcommensalism and parasitic infestation in crayfish (astacus leptodactylus eschscholtz, 1823) of aras dam reservoir, iran
the freshwater crayfish of the aras reservoir is an important economic fisheries resource of west azarbaijan, iran. this study was conducted to evaluate the prevalence of parasitic infestation of crayfish seasonally in this area in 2010. among 390 different sizes of astacus leptodactylus which were examined, a range of ectocommensals or ectosymbionts from a number of different phyla including ...
متن کاملProtozoan epibionts on Astacus leptodactylus (Eschscholtz, 1823) from Aras Reservoir, Northwest Iran
The Astacus leptodactylus specimens were collected from four sites of Aras reservoir, North-West of Iran and examined for the epibionts during 2009. Protozoan epibionts from ciliophora (one genus and seven species) and tracheophyta were isolated from the cuticular surface of different body parts of narrow-claw crayfish, A.leptodactylus. Seasonal prevalence of infestation was determined in 394 i...
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عنوان ژورنال
دوره 2 شماره None
صفحات 80- 86
تاریخ انتشار 2016-02
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