Persistent organic pollutants and stable isotopes in pinnipeds from King George Island, Antarctica.

Autor: Cipro CV; Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, 05508-120 São Paulo-SP, Brazil. caiovzc@gmail.com, Bustamante P, Taniguchi S, Montone RC
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2012 Dec; Vol. 64 (12), pp. 2650-5. Date of Electronic Publication: 2012 Nov 13.
DOI: 10.1016/j.marpolbul.2012.10.012
Abstrakt: 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 δ(15)N and pollutants suggests, to some degree, a considerable ability to metabolize and/or excrete the majority of them.
(Copyright © 2012 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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