PMID- 31926389 OWN - NLM STAT- MEDLINE DCOM- 20200520 LR - 20200520 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 259 DP - 2020 Apr TI - Influence of overwinter distribution on exposure to persistent organic pollutants (POPs) in seabirds, ancient murrelets (Synthliboramphus antiquus), breeding on the Pacific coast of Canada. PG - 113842 LID - S0269-7491(19)34500-2 [pii] LID - 10.1016/j.envpol.2019.113842 [doi] AB - Assessing the fate of both legacy and newer persistent organic pollutants (POPs) is an ongoing challenge. Top predators, including seabirds, are effective monitors of POPs because they forage over a range of marine habitats, integrating signals over space and time. However, migration patterns can make unravelling contaminant sources, and potentially assessments of the effectiveness of regulations, challenging if chemicals are acquired at distant sites. In 2014, we fitted geolocators on ancient murrelets (Synthliboramphus antiqueus) at four colonies on the Pacific Coast of Canada to obtain movement data throughout an annual cycle. All birds underwent a post-breeding moult in the Bering Sea. Around one-third then returned to overwinter on the British Columbia (BC) coast while the rest migrated to overwinter in waters along the north Asian coast. Such a stark difference in migration destination provided an opportunity to examine the influence of wintering location on contaminant signals. In summer 2015, we collected blood samples from returned geo-tagged birds and analyzed them for a suite of contaminants, including polybrominated diphenyl ethers (PBDEs), non-PBDE halogenated flame retardants, perfluoroalkyl substances (PFASs), organochlorines, and mercury. Feathers were also collected and analyzed for stable isotopes (delta(13)C, delta(15)N, and delta(34)S). We found no significant differences in blood concentrations of any contaminant between murrelets from the two different overwinter areas, a result that indicates relatively rapid clearance of POPs accumulated during winter. Spatial variation in diet (i.e., delta(13)C) was associated with both BDE-47 and -99 concentrations. However, individual variation in trophic level had little influence on concentrations of any other examined contaminants. Thus, blood from these murrelets is a good indicator of recent, local contaminants, as most signals appear independent of overwintering location. CI - Crown Copyright (c) 2020. Published by Elsevier Ltd. All rights reserved. FAU - Miller, Aroha AU - Miller A AD - Ecotoxicology and Wildlife Health Directorate, Environment and Climate Change Canada, Delta, BC, Canada. FAU - Elliott, John E AU - Elliott JE AD - Ecotoxicology and Wildlife Health Directorate, Environment and Climate Change Canada, Delta, BC, Canada. Electronic address: john.elliott@canada.ca. FAU - Wilson, Laurie K AU - Wilson LK AD - Canadian Wildlife Service, Environment and Climate Change Canada, Delta, BC, Canada. FAU - Elliott, Kyle H AU - Elliott KH AD - McGill University, Montreal, QU, Canada. FAU - Drouillard, Ken G AU - Drouillard KG AD - University of Windsor, Windsor, ON, Canada. FAU - Verreault, Jonathan AU - Verreault J AD - Universite du Quebec a Montreal, P.O. Box 8888, Succursale Centre-ville, Montreal, QC, H3C 3P8, Canada. FAU - Lee, Sandi AU - Lee S AD - Ecotoxicology and Wildlife Health Directorate, Environment and Climate Change Canada, Delta, BC, Canada. FAU - Idrissi, Abde AU - Idrissi A AD - Ecotoxicology and Wildlife Health Directorate, Environment and Climate Change Canada, Ottawa, ON, Canada. LA - eng PT - Journal Article DEP - 20191227 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Environmental Pollutants) SB - IM MH - *Animal Distribution MH - Animals MH - Birds MH - Breeding MH - British Columbia MH - *Environmental Exposure MH - Environmental Monitoring MH - *Environmental Pollutants/blood/metabolism MH - Pacific Ocean MH - Seasons OTO - NOTNLM OT - Ancient murrelet OT - Environmental contaminants OT - Migration OT - North Pacific Ocean OT - Seabirds EDAT- 2020/01/12 06:00 MHDA- 2020/05/21 06:00 CRDT- 2020/01/12 06:00 PHST- 2019/08/09 00:00 [received] PHST- 2019/12/12 00:00 [revised] PHST- 2019/12/12 00:00 [accepted] PHST- 2020/01/12 06:00 [pubmed] PHST- 2020/05/21 06:00 [medline] PHST- 2020/01/12 06:00 [entrez] AID - S0269-7491(19)34500-2 [pii] AID - 10.1016/j.envpol.2019.113842 [doi] PST - ppublish SO - Environ Pollut. 2020 Apr;259:113842. doi: 10.1016/j.envpol.2019.113842. Epub 2019 Dec 27.