ACUTE CHROMIUM EXPOSURE INDUCED ALTERATIONS IN BEHAVIORAL, ENZYMATIC AND GENO-TOXIC RESPONSES OF CTENOPHARYNGODON IDELLA

Heavy metals are the most significant pollutants because they are found throughout the environment.These metals are highly toxic and carcinogenic with ability to harm the organs and disrupt the biological systems of organisms even at very low levels.Therefore, in this study acute toxicity, behavior, catalase (CAT) activity and geno-toxic response of Ctenopharyngodon idella after exposure to chromium (Cr) was examined.To assess the acute toxicity (96-hr) fish was treated with various doses (10,15,20,25,30,35,40,45,50,55,60 and 65 mg/L) of Cr.The CAT level was observed in liver, gills, brain and muscle of C. Idella and genotoxicity examined in blood cells by using micronucleus test.The LC50 and lethal conc.(96-hr) of Cr for C. Idella were computed as 45.11 and 75.58 mg/L, respectively.The behavioral alterations such as increased fin movement, mucus secretion, loss of equilibrium, hyperactive, swimming rate, jumping, and opercula movements of C. idella on exposure to Cr were observed.In present