PMID- 23632440 OWN - NLM STAT- MEDLINE DCOM- 20131107 LR - 20181202 IS - 1873-6750 (Electronic) IS - 0160-4120 (Linking) VI - 57-58 DP - 2013 Jul TI - Ecological and spatial factors drive intra- and interspecific variation in exposure of subarctic predatory bird nestlings to persistent organic pollutants. PG - 25-33 LID - S0160-4120(13)00078-0 [pii] LID - 10.1016/j.envint.2013.03.009 [doi] AB - Top predators in northern ecosystems may suffer from exposure to persistent organic pollutants (POPs) as this exposure may synergistically interact with already elevated natural stress in these ecosystems. In the present study, we aimed at identifying biological (sex, body condition), ecological (dietary carbon source, trophic level) and spatial factors (local habitat, regional nest location) that may influence intra- and interspecific variation in exposure of subarctic predatory bird nestlings to polychlorinated biphenyl 153 (CB 153), polybrominated diphenyl ether 47 (BDE 47), dichlorodiphenyldichloroethylene (p,p'-DDE) and hexachlorobenzene (HCB). During three breeding seasons (2008-2010), we sampled body feathers from fully-grown nestlings of three ecologically distinct predatory bird species in subarctic Norway: Northern Goshawk (Accipiter gentilis), White-tailed Eagle (Haliaeetus albicilla) and Golden Eagle (Aquila chrysaetos). The present study analysed, for the first time, body feathers for both POPs and carbon (delta(13)C) and nitrogen (delta(15)N) stable isotopes, thus integrating the dietary carbon source, trophic level and POP exposure for the larger part of the nestling stage. Intraspecific variation in exposure was driven by a combination of ecological and spatial factors, often different for individual compounds. In addition, combinations for individual compounds differed among species. Trophic level and local habitat were the predominant predictors for CB 153, p,p'-DDE and BDE 47, indicating their biomagnification and decreasing levels according to coast>fjord>inland. Variation in exposure may also have been driven by inter-annual variation arisen from primary sources (e.g. p,p'-DDE) and/or possible revolatilisation from secondary sources (e.g. HCB). Interspecific differences in POP exposure were best explained by a combination of trophic level (biomagnification), dietary carbon source (food chain discrimination) and regional nest location (historical POP contamination). In conclusion, the combined analysis of POPs and stable isotopes in body feathers from fully-grown nestlings has identified ecological and spatial factors that may drive POP exposure over the larger part of the nestling stage. This methodological approach further promotes the promising use of nestling predatory bird body feathers as a non-destructive sampling strategy to integrate various toxicological and ecological proxies. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Eulaers, Igor AU - Eulaers I AD - Ethology Research Group, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium. igor.eulaers@ua.ac.be FAU - Jaspers, Veerle L B AU - Jaspers VL FAU - Bustnes, Jan O AU - Bustnes JO FAU - Covaci, Adrian AU - Covaci A FAU - Johnsen, Trond V AU - Johnsen TV FAU - Halley, Duncan J AU - Halley DJ FAU - Moum, Truls AU - Moum T FAU - Ims, Rolf A AU - Ims RA FAU - Hanssen, Sveinn A AU - Hanssen SA FAU - Erikstad, Kjell E AU - Erikstad KE FAU - Herzke, Dorte AU - Herzke D FAU - Sonne, Christian AU - Sonne C FAU - Ballesteros, Manuel AU - Ballesteros M FAU - Pinxten, Rianne AU - Pinxten R FAU - Eens, Marcel AU - Eens M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130428 PL - Netherlands TA - Environ Int JT - Environment international JID - 7807270 RN - 0 (Environmental Pollutants) RN - 0 (Halogenated Diphenyl Ethers) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Animals MH - Ecology MH - Environmental Monitoring MH - Environmental Pollutants/*analysis MH - *Falconiformes MH - Feathers/*chemistry MH - Food Chain MH - Halogenated Diphenyl Ethers/*analysis MH - Norway MH - Polychlorinated Biphenyls/*analysis EDAT- 2013/05/02 06:00 MHDA- 2013/11/08 06:00 CRDT- 2013/05/02 06:00 PHST- 2012/11/26 00:00 [received] PHST- 2013/02/26 00:00 [revised] PHST- 2013/03/26 00:00 [accepted] PHST- 2013/05/02 06:00 [entrez] PHST- 2013/05/02 06:00 [pubmed] PHST- 2013/11/08 06:00 [medline] AID - S0160-4120(13)00078-0 [pii] AID - 10.1016/j.envint.2013.03.009 [doi] PST - ppublish SO - Environ Int. 2013 Jul;57-58:25-33. doi: 10.1016/j.envint.2013.03.009. Epub 2013 Apr 28.