Histopathological lesions induced by Endosulfan in the liver of fish, tilapia Mossambica

Freshwater fish, Tilapia mossambica is an important species in Tamil Nadu region having good nutritional values. Fishes living in close association with may accumulate pesticides. In the present study, the toxic effects of the endosulfan LC50 5 µg/L. The most common changes were observed in both 10% and 30% sublethal concentrations of endosulfan in liver of Tilapia mossambica for different exposure period. In 5 days treated fish in 10% sublethal concentration of the liver tissue changes observed in Tilapia mossambica was affected nucleus congestion, unequal size of nucleus, increase of vaculation, disintegrated of nucleus mild vacuoles and less number of nucleus. The present work on histological observation was carried out to know lesions in liver that had resulted from sublethal exposure of the fish Tilapia mossambica to pesticide endosulfan.