HISTOPATHOLOGICAL CHANGES IN SELECTED TISSUES OF THE FISH CYPRINUS CARPIO DURING SUB – LETHAL EXPOSURE TO KARANJIN BASED BIOPESTICIDE – DERISOM

Abstract

Histopathology serves as a very good marker of environmental toxicology and also useful in monitoring health status of aquatic vertebrates. Histological alterations in organs i.e. gill, liver, kidney and muscle of Cyprinus carpio were observed during sub-lethal exposure of biopesticide Derisom for a period of 21 days. Fishes of exposed group showed alterations in gill like vacuolation, curling of secondary gill lamellae, infiltration of inflammatory cells, etc. The liver of exposed fishes showed alterations such as vacuolation, hydropic degeneration, necrosis, cytoplasmic degeneration, etc. The kidney of the exposed fishes showed changes such as epithelial rupture, degenerative changes, vacuolation, etc. The muscle of the exposed fishes showed changes such as splitting of muscle fibres, increased inter muscular space, etc.