Organochlorine Pesticides (OCs) and Polychlorinated Biphenyls (PCBs) inTilapia zillii from Lake El-Manzala Egypt

A fishwater fish species, (Tilapia zillii) from Lake El-Manzala was analyzed for concentrations of several Organochlorine pesticides (OCs) and Polychlorinated biphenyls (PCBs) in liver, gonads, mesenteric fat, flesh and the digestive tract in the mature fish during the breeding season. Polychlorinated pesticides (OCs) were calculated in (ng/g) dry weight (dw) in homogenized samples. The obtained results revealed differences in lipid content between these different organs. The females showed higher lipid content than males. There was significant positive correlation between the lipid content and organochlorines and polychlorinated biphenyls (PCBs). The results came concomitant with the lipophilicity of studied compounds. However, the recorded concentrations of these studied pollutants still do not exceed the international hazardous levels. (author)