The toxicity effect of LAMDA cyhalothrin on Channa punctatus

Abstract

Insecticidal use in agriculture gained momentum around the mid-twentieth century. Fungicides are also used in agriculture for the prevention of fungal infection in seed grain. Later these compounds discharge in nearby water bodies and consumed by fishes and other aquatic life. These fat-soluble contaminants concentrate in the adipose tissue of fishes by bioaccumulation and biomagnification. The present study helps in assessment of toxicity of lambda-cyhalothrin, a pyrethroid to fishes Channa punctatus. The effect of exposure to sub lethal concentrations of Lamda-cyhalothrin (0.011, 0.016 and 0.020 mg/ kg) on biochemical contents in liver and muscles of Channa punctatus was studied up to 35 days at an interval of 5 days. The exposed fish exhibited significant changes in biochemical contents. During exposure period total lipids in both the tissues were decreased up to 5 days but after 5 days these contents were slightly recovered during next 25 days. Protein concentration in the liver and muscles of fish was also decreased. The changes were dependent on period of exposure and concentration of lamda cyhalothrin.