BIOACCUMULATION OF ORGANOPHOSPHATE PESTICIDE IN ORGANS OF SNAKE HEAD FISH AND THEIR EFFECT ON BIOCHEMICAL MOIETIES

Abstract

Fishes are very sensitive to aquatic environmental changes so they are important bio-indicator for monitoring the contamination of water bodies. Numerous organophosphate pesticides are widely used in domestic, industrial and agricultural fields to protect the crops from various pest and diseases owing to their high insecticidal property and low persistence in the environment. Pesticide exposure may also fatal to many non-target organisms like fish where it hampers its health through impairment of metabolism. Dichlorvos is an organophosphate insecticide and widely used in all fields. Present study was aimed to evaluate accumulation of pesticide in tissues and the effects of pesticide residues on biochemical moieties in fish, Channa gachua exposed to organophosphate pesticide dichlorvos. In present study, fishes were exposed to 1/10thof LC50 concentration (12.5 ppm) of dichlorvos for 30 days (chronic). Highly significant depletion was observed in glycogen, protein and lipid content in liver and muscle of fishes exposed to pesticide as compared to control. Accumulation of pesticide residue was also observed in those tissues by HPLC method. Biotransformation and bioaccumulation of pesticide and their residues in food chain can cause detrimental health effects on non-target organism.