PMID- 19932109 OWN - NLM STAT- MEDLINE DCOM- 20100806 LR - 20131121 IS - 1095-6840 (Electronic) IS - 0016-6480 (Linking) VI - 166 IP - 1 DP - 2010 Mar 1 TI - Adrenocortical function of Arctic-breeding glaucous gulls in relation to persistent organic pollutants. PG - 25-32 LID - 10.1016/j.ygcen.2009.11.013 [doi] AB - Unpredictable changes in the environment stimulate the avian hypothalamo-pituitary-adrenal axis to produce corticosterone, which induces behavioural and metabolic changes that enhance survival in the face of adverse environmental conditions. In addition to profound environmental perturbations, such as severe weather conditions and unpredictable food shortages, many Arctic-breeding birds are also confronted with chronic exposure to persistent organic pollutants (POPs), some of which are known to disrupt endocrine processes. This study investigated the adrenocortical function of a top predator in the Arctic marine environment, the glaucous gull (Larus hyperboreus). High concentrations of organochlorines, brominated flame retardants and metabolically-derived products in blood plasma of incubating glaucous gulls were associated with high baseline corticosterone concentrations in both sexes and a reduced stress response in males. Contaminant-related changes in corticosterone concentration occurred over and above differences in body condition and seasonal variation. Chronically high corticosterone concentrations and/or a compromised adrenocortical response to stress can have negative effects on the health of an individual. The results of the present study suggest that exposure to POPs may increase the vulnerability of glaucous gulls to environmental stressors and thus could potentially compromise their ability to adapt to the rapidly changing environmental conditions associated with climate change that are currently seen in the Arctic. CI - Copyright 2009 Elsevier Inc. All rights reserved. FAU - Verboven, Nanette AU - Verboven N AD - Division of Cell Sciences, Faculty of Veterinary Medicine, University of Glasgow, 464 Bearsden Road, Glasgow G61 1QH, Scotland, UK. FAU - Verreault, Jonathan AU - Verreault J FAU - Letcher, Robert J AU - Letcher RJ FAU - Gabrielsen, Geir W AU - Gabrielsen GW FAU - Evans, Neil P AU - Evans NP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091120 PL - United States TA - Gen Comp Endocrinol JT - General and comparative endocrinology JID - 0370735 RN - 0 (Flame Retardants) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Hydrocarbons, Chlorinated) RN - W980KJ009P (Corticosterone) SB - IM MH - Animals MH - Arctic Regions MH - Breeding MH - Charadriiformes/*physiology MH - Corticosterone/*blood MH - Female MH - Flame Retardants/metabolism MH - Halogenated Diphenyl Ethers/blood MH - Hydrocarbons, Chlorinated/blood MH - Male MH - Oceans and Seas MH - Stress, Physiological MH - Water Pollution, Chemical/*adverse effects EDAT- 2009/11/26 06:00 MHDA- 2010/08/07 06:00 CRDT- 2009/11/26 06:00 PHST- 2009/02/26 00:00 [received] PHST- 2009/06/27 00:00 [revised] PHST- 2009/11/17 00:00 [accepted] PHST- 2009/11/26 06:00 [entrez] PHST- 2009/11/26 06:00 [pubmed] PHST- 2010/08/07 06:00 [medline] AID - S0016-6480(09)00424-9 [pii] AID - 10.1016/j.ygcen.2009.11.013 [doi] PST - ppublish SO - Gen Comp Endocrinol. 2010 Mar 1;166(1):25-32. doi: 10.1016/j.ygcen.2009.11.013. Epub 2009 Nov 20.