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International Journal of Aquatic Biology، جلد ۳، شماره ۶، صفحات ۳۹۸-۰
عنوان فارسی
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عنوان انگلیسی Rodlet cells changes in Oreochromis niloticus in response to organophosphate pesticide and their relevance as stress biomarker in teleost fishes
چکیده انگلیسی مقاله Rodlet cells are frequently found in teleost fishes and although their role in organisms is not completely understood. The occurrence of these cells are related to stress and may undergo changes in contaminated environments, thereby allowing their use as biomarkers. This hypothesis is tested in the present study. Thirty specimens of Oreochromis niloticus were divided into three groups, two groups were exposed to organophosphate pesticide methyl parathion at nominal concentrations of 4 mgl -1 and 8 mgl -1 and one group was kept as control. After ten days, the gills were removed for microscopic study and the number and area of the rodlet cells were analyzed and compared with a well-established method of assessing histological damages in fishes. No significant differences were found in the area of the cells, but there were significant differences in the number of rodlet cells among examined concentrations. The present study provides evidence for the use of this new biomarker in teleost fishes and discusses some of the potential confounding factors of this approach.
کلیدواژه‌های انگلیسی مقاله Organophosphate, Biomarkers, Nile tilapia, Methyl parathion.
نویسندگان مقاله ناتالیا de souza araujo | natalia de souza araujo
university of sao paulo


joao کارلوس شیمادا borges | joao carlos shimada borges
university paulista
نشانی اینترنتی http://npajournals.com/ijab/index.php/ijab/article/view/458
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