Histopathological changes in the gill and liver tissues of freshwater fish, Cirrhinus mrigala exposed to dichlorvos

Brazilian Archives of Biology and Technology

Babu Velmurugan²  Mariadoss Selvanayagam²  Elif Ipek Cengiz¹  Erhan Unlu¹ 

[1] ,Loyola College Department of Zoology Environmental Science and Biotechnology Research UnitTamil Nadu,India

关键词: Dichlorvos;    Organophosphate pesticide;    Cirrhinus mrigala;    Histopathology;   

DOI  :  10.1590/S1516-89132009000500029

来源: SciELO

【 摘 要 】

The histopathological effects of dichlorvos, an organophosphate pesticide, on the gill and liver tissues in Cirrhinus mrigala were determined by light microscopy. The fishes were exposed to sublethal concentrations (0.91 and 1.82 ppm) of dichlorvos for 10 days with parallel untreated control. No histopathological effects were observed in control group. Hyperplasia, desquamation, and necrosis of epithelial, epithelial lifting, oedema, lamellar fusion, collapsed secondary lamellae, curling of secondary lamellae and aneurism in the secondary lamellae were observed in gill tissues exposed to dichlorvos. Hepatic lesions in the liver tissues of fishes exposed to dichlorvos were characterized by cloudy swelling of hepatocytes, congestion, vacuolar degeneration, karyolysis, karyohexis, dilation of sinusoids and nuclear hypertrophy.

【 授权许可】

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