Size matters on Polybrominated Diphenyl Ethers, Organochlorine Pesticides and Polychlorinated Biphenyls levels in brown trout, Patagonia Argentina.

ONDARZA P.M.; GONZALEZ M.; FILLMANN G.; MIGLIORANZA K.S.B.

Portland, USA

Congreso; 31th Annual Meeting of Society of Environmental Toxicology and Chemistry (SETAC) North America.; 2010

North America Society of Environmental Toxicology and Chemistry (SETAC)

Organochlorine Pesticides (OCPs), Polychlorinated Biphenyls (PCBs) and Polybrominated Diphenyl Ethers (PBDEs) are lipophilic, persistent and globally distributed pollutants that could be accumulated in biota. Aquatic ecosystems are subject to poisoning risks due to the inputs of these contaminants from agricultural or industrial activities. The knowledge of contaminant residues in fish is an important tool for assessing the state of the environment and human health perspectives. The present study aims to investigate the influence of size on bioaccumulation of OCPs, PCBs and PBDEs in brown trout (Salmo trutta). Specimens were catched from a fruit and hops production area (41º56S-72º29W) from Argentinean Patagonia, and were divided in two size groups: juveniles (11-18 cm) and females (26-35 cm). Muscle, liver, gonads and gills were analyzed with a GC-17A Shimadzu for OCPs and PCBs and with GC-MS 500 Perkin-Elmer for PBDEs. Concentrations were normalized to lipid content. A marked difference in contaminant levels between size was observed mainly in liver and gonad (Wilconox p99>100. These results were consistent with the general pattern found in worldwide fish. In conclusion, fish size influence the bioaccumulation of OCPs, PCBs and PBDEs in brown trout, and it is related with biological characteristics and physiological processes.