Role of feeding diets and habitat condition in the accumulation of the organic pollutants in the international Anzali Wetland fish

Among anthropogenic pollutants, the aim concern has been directed to organochlorine (OCs) such as polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDTs) because of their persistency, bioaccumulative nature and potential toxic affects to wild life and human. Animal diet is generally one of the major routes of contaminats into the human body. In particular, an important significance in this context has been attributed to fish and seafood. In this study, the levels of organochlorinated contaminats, such as organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) were measured in three species, Carassius auratus, Cyprinus carpio Esox lucius, for the two season (winter and spring) from the international Anzali wetland, Iran. These species were selected for their feeding behavior, condition habitat and their importance to local human fish consumption and the two seasons were selected for the difference in the agriculture actions and atmospheric rains. The results indicated that the levels of these pollutants in the Cyprinus carpio (omnivorous feeding mode and bentho plagic condition habitat) were higher than in the other species and this was related to higher lipid content, difference in the their feeding behavior, condition habitat. DDTs were the predominant organochlorinated contaminats in all species. Also in the almost of samples levels of this pollutants lowered than global standard