Bioaccumulation of Carbamate and Pyrethroid Insecticides in Fishes of the River Gomti at Jaunpur during Breeding Season

Abstract

The aim of the present investigation was to monitor the levels of bioaccumulation of carbamates (Carbofuran, Carbaryl and Aldicarb) and pyrethroid insecticides (Cypermethrin and Deltamethrin) in liver, brain and ovary of captured catfish Bagarius bagarius from unpolluted ponds of Gujartal, Jaunpur (reference site) and polluted river Gomti, Jaunpur during pre-monsoon or breeding phase. The carbamates were measured by high performance liquid chromatography (HPLC) and the pyrethroids by gas liquid chromatography (GLC). Results indicated that catfish B. bagarius captured from river Gomti have higher bioaccumulation of insecticides when compared to those from the reference site reflecting the degree of pesticide pollution present in those water bodies. The bioaccumulation of Carbofuran, Carbaryl and Aldicarb were significantly higher in the brain, liver and ovary in polluted fish as compared to the conspecific species captured from reference site. Likewise, the bioaccumulation of Cypermethrin and Deltamethrin was also higher in the studied tissues when compared with fish of same species captured from the reference site. Results indicated that the bioaccumulation of these insecticides cause metabolic disorder as well as affect the reproductive physiology of this species.