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International Journal of Aquatic Biology، جلد ۴، شماره ۴، صفحات ۲۳۳-۰
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عنوان انگلیسی Neem leaf juice as bio-safe anaesthetic against two live fish, Anabas testudineus and Channa punctata
چکیده انگلیسی مقاله Activity of fresh neem leaf juice to immobilize, anaesthetize and fatal effect were studied against two live fish species, Anabas testudineus and Channa punctatus. The concentrations, 5, 10, 15 and 20% of neem leaf juice affected both the species, but A. testudineus was found to be comparatively more susceptible to the treatment than C. punctatus . The time required to immobilize were 4 to > 6 hours for A. testudineus and 7 to 9 hours for C. punctatus ; to anaesthetize were 6 to > 12 hours and 8 to 10.15 hours for A. testudineus and C. punctatus respectively; and death occurred 7 to > 13 hours in A. testudineus and 9 to 10.45 hours in C. punctatus after treatment depending on the concentrations. The toxic effects were positively co-related with the concentrations and negatively co-related with the total weight of the fish, though the values of the coefficient of the correlations (r) were low. At the anaesthetic stage, the colour of skin, gills and eye were changed, the fishes showed irritated movement first ( A. testudineus ) and then became sluggish (both species), and instead of the normal fishy smell the fishes gave neem leaf like smell.
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نویسندگان مقاله محمد kamrul احسن | mohammad kamrul ahsan
fisheries research laboratory, department of zoology, university of rajshahi, rajshahi 6205, bangladesh.


محمد manjurul عالم | mohammad manjurul alam
department of fisheries, university of rajshahi, bangladesh.


selina parween | selina parween
fisheries research laboratory, department of zoology, university of rajshahi, rajshahi 6205, bangladesh.
نشانی اینترنتی http://npajournals.com/ijab/index.php/ijab/article/view/553
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