Bioaccumulation of organochlorine pollutants in the fish community in Lake Årungen,Norway |
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| Authors: | Chhatra Mani Sharma Bjørn Olav Rosseland Marit Almvik Ole Martin Eklo |
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| Institution: | 1. Department of Environmental Sciences, State University of Rio Grande do Sul, 98.600-000 Três Passos, RS, Brazil;2. Department of Biochemistry and Molecular Biology, Center for Natural and Exact Sciences, Federal University of Santa Maria, 97.105-900 Santa Maria, RS, Brazil;3. Federal Institute Farroupilha, Campus Alegrete, 97.555-000 Alegrete, RS, Brazil;4. LARP – Laboratory of Pesticide Residue Analysis, Federal University of Santa Maria, Santa Maria, RS, Brazil;1. Department of Food Safety and Infection Biology, Norwegian University of Life Sciences, P.O. Box 5003, Campus Adamstuen, NO-1432 Ås, Norway;2. Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania;3. Sokoine University of Agriculture, Department of Physical Sciences, P.O. Box 3038, Solomon Mahlangu Campus, Morogoro, Tanzania;4. Tanzania Association of Public, Occupation and Environmental Health Experts (TAPOHE), P.O. Box 732, Arusha, Tanzania;5. The Norwegian Veterinary Institute (NVI), P.O. Box 750 Sentrum, N-0106 Oslo, Norway;6. Norwegian Institute for Water Research (NIVA), Gaustadallèen 21, N-0349 Oslo, Norway |
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| Abstract: | Organochlorine pollutants in the major fish species (pike Esox lucius, perch Perca fluviatilis, and roach Rutilus rutilus) of Lake Årungen, Norway, were investigated after an extensive removal of large pike in 2004. The organochlorine pollutants detected in fish liver samples in 2005 were dichlorodiphenyltrichloroethane (DDTs), polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), and heptachlor epoxide (HCE). DDTs were the dominant among all analyzed OCs. ΣPCB and HCB, detected in fish from two clearly distinct trophic levels (prey and predators), give an indication of biomagnification. All OC concentrations in female pike were significantly lower compared to males, which might be due to the removal of high concentrations of pollutants in roe during spawning. |
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