Persistent organic pollutants and stable isotopes in pinnipeds from King George Island,Antarctica |
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| Institution: | 1. Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, 05508-120 São Paulo-SP, Brazil;2. Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-Université de La Rochelle, 2 rue Olympe de Gouges, 17042 La Rochelle Cedex 01, France;1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;3. Hainan Research Academy of Environmental Sciences, Haikou 571126, China;4. South China Institute of Endangered Animals, Guangzhou 510260, China;1. Department of Physics, Earth and Environmental Sciences, University of Siena, via P.A. Mattioli 4, I-53100, Siena, Italy;2. Dipartimento di Scienze della Terra e del Mare, Università degli Studi di Palermo, Viale delle Scienze Ed. 16, 90128, Palermo, Italy;1. Centre de recherche en toxicologie de l''environnement (TOXEN), Département des sciences biologiques, Université du Québec à Montréal, P.O. Box 8888, Station Centre-ville, Montréal, QC, H3C 3P8, Canada;2. Centre d’étude de la forêt, Département des sciences du bois et de la forêt, Université Laval, 2405 rue de la Terrasse, Québec, QC, G1V 0A6, Canada;1. Pohang University of Science and Technology (POSTECH), San 31, Hyoja-dong, Nam-gu, Pohang 37673, South Korea;2. Korea Polar Research Institute (KOPRI), 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South Korea;3. Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany;4. Research Center for Toxic Compounds in the Environment (RECETOX), Masaryk University, Kamenice 753/5, Brno 625 00, Czech Republic;1. Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway;2. Institute of Marine Research, PO Box 1870 Nordnes, 5817 Bergen, Norway;3. Norwegian Institute for Air Research, Fram Centre, 9296 Tromsø, Norway;4. Gateway Antarctica, University of Canterbury, Christchurch 8140, New Zealand;5. Smithsonian Environmental Research Center, Edgewater, MD 21037, USA |
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| Abstract: | In the present work, fat, skin, liver and muscle samples from Leptonychotes weddellii (Weddell seal, n = 2 individuals), Lobodon carcinophagus (crabeater seal, n = 2), Arctocephalus gazella (Antarctic fur seal, n = 3) and Mirounga leonina (southern elephant seal, n = 1) were collected from King George Island, Antarctica, and analysed for POPs (PCBs, organochlorine pesticides and PBDEs) and stable isotopes (δ13C and δ15N in all tissues but fat). PBDEs could be found in only one sample (L. weddellii fat). Generally, PCBs (from 74 to 523 ng g?1 lw), DDTs (from 14 to 168 ng g?1 lw) and chlordanes (from 9 to 78 ng g?1 lw) were the prevailing compounds. Results showed a clear stratification in accordance with ecological data. Nonetheless, stable isotope analyses provide a deeper insight into fluctuations due to migrations and nutritional stress. Correlation between δ15N and pollutants suggests, to some degree, a considerable ability to metabolize and/or excrete the majority of them. |
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