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Environ Res

Title:		"Latitudinal exposure to DDTs, HCB, PCBs, PBDEs and DP in giant petrels (Macronectes spp.) across the Southern Ocean"
Author(s):		Roscales JL; Gonzalez-Solis J; Zango L; Ryan PG; Jimenez B;
Address:		"Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, CSIC (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. Electronic address: jlroscales@iqog.csic.es. Institut de Recerca de la Biodiversitat (IRBio) and Department of Animal Biology, Universitat de Barcelona, Av Diagonal 643, 08028 Barcelona, Spain. Percy FitzPatrick Institute, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa. Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, CSIC (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain"
Journal Title:		Environ Res
Year:		2016
Volume:		20160416
Issue:
Page Number:		285 - 294
DOI:		10.1016/j.envres.2016.04.005
ISSN/ISBN:		1096-0953 (Electronic) 0013-9351 (Linking)
Abstract:		"Studies on Persistent Organic Pollutants (POPs) in Antarctic wildlife are scarce, and usually limited to a single locality. As a result, wildlife exposure to POPs across the Southern Ocean is poorly understood. In this study, we report the differential exposure of the major southern ocean scavengers, the giant petrels, to POPs across a wide latitudinal gradient. Selected POPs (PCBs, HCB, DDTs, PBDEs) and related compounds, such as Dechlorane Plus (DP), were analyzed in plasma of southern giant petrels (Macronectes giganteus) breeding on Livingston (62 degrees S 61 degrees W, Antarctica), Marion (46 degrees S 37 degrees E, sub-Antarctic), and Gough (40 degrees S 10 degrees W, cool temperate) islands. Northern giant petrels (Macronectes halli) from Marion Island were also studied. Stable isotope ratios of C and N (delta(13)C and delta(15)N) were used as dietary tracers of the marine habitat and trophic level, respectively. Breeding locality was a major factor explaining petrel exposure to POPs compared with species and sex. Significant relationships between delta(13)C values and POP burdens, at both inter- and intra-population levels, support latitudinal variations in feeding grounds as a key factor in explaining petrel pollutant burdens. Overall, pollutant levels in giant petrels decreased significantly with latitude, but the relative abundance (%) of the more volatile POPs increased towards Antarctica. DP was found at negligible levels compared with legacy POPs in Antarctic seabirds. Spatial POP patterns found in giant petrels match those predicted by global distribution models, and reinforce the hypothesis of atmospheric long-range transport as the main source of POPs in Antarctica. Our results confirm that wildlife movements out of the polar region markedly increase their exposure to POPs. Therefore, strategies for Antarctic wildlife conservation should consider spatial heterogeneity in exposure to marine pollution. Of particular relevance is the need to clarify the exposure of Antarctic predators to emerging contaminants that are not yet globally regulated"
Keywords:		"Animals Birds/*blood Environmental Monitoring Female Halogenated Diphenyl Ethers/*blood Hydrocarbons, Chlorinated/*blood Male Oceans and Seas Water Pollutants, Chemical/*blood Antarctica Long-range transport POPs Seabirds Stable isotopes;"
Notes:		"MedlineRoscales, Jose L Gonzalez-Solis, Jacob Zango, Laura Ryan, Peter G Jimenez, Begona eng Research Support, U.S. Gov't, Non-P.H.S. Netherlands 2016/04/19 Environ Res. 2016 Jul; 148:285-294. doi: 10.1016/j.envres.2016.04.005. Epub 2016 Apr 16"