title: Organohalogen contaminants and total mercury in forage fish preyed upon by thick-billed murres in northern Hudson Bay.
abstract: Twelve marine fish species collected from a thick-billed murre (Uria lomvia) breeding colony in northern Hudson Bay in the Canadian Arctic during 2007-2009 were analyzed for legacy organochlorines (e.g. PCBs, DDT), polybrominated diphenyl ethers (PBDEs), perfluorinated carboxylates (PFCAs) and sulfonates (PFSAs), and total mercury (Hg). No one species of prey fish had the highest levels across all contaminant groups analyzed. For the two pelagic fish species sampled, concentrations of the major organochlorine groups (e.g. Σ21PCB, ΣDDT, ΣCHL, ΣCBz), ΣPBDE, ΣPFCA and Hg were consistently higher in Arctic cod (Boreogadus saida) than in capelin (Mallotus villosus). Biomagnification factors from whole fish to thick-billed murre liver across all species were generally higher for Σ21PCB and ΣDDT. ΣPBDE did not biomagnify.
authors.affiliation: Environment Canada, National Wildlife Research Centre, Carleton University, Raven Road, Ottawa, Ontario K1A 0H3, Canada. Electronic address: birgit.braune@ec.gc.ca.
authors.forename: Birgit M
authors.initials: BM
authors.lastname: Braune
authors.affiliation: Environment Canada, National Wildlife Research Centre, Carleton University, Raven Road, Ottawa, Ontario K1A 0H3, Canada.
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Gaston
authors.affiliation: Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
authors.forename: Kyle H
authors.initials: KH
authors.lastname: Elliott
authors.affiliation: Department of Biology, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
authors.forename: Jennifer F
authors.initials: JF
authors.lastname: Provencher
authors.affiliation: Environment Canada, Pacific Wildlife Research Centre, 5421 Robertson Road, Delta, British Columbia V4K 3N2, Canada.
authors.forename: Kerry J
authors.initials: KJ
authors.lastname: Woo
authors.affiliation: Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
authors.forename: Magaly
authors.initials: M
authors.lastname: Chambellant
authors.affiliation: Fisheries and Oceans Canada, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba R3T 2N6, Canada.
authors.forename: Steven H
authors.initials: SH
authors.lastname: Ferguson
authors.affiliation: Environment Canada, National Wildlife Research Centre, Carleton University, Raven Road, Ottawa, Ontario K1A 0H3, Canada.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Letcher
mesh_terms: D000818:Animals; D001110:Arctic Regions; D061006:Bays / Q000737:chemistry; D002170:Canada; D046091:Charadriiformes; D004784:Environmental Monitoring; D005399:Fishes / Q000378:metabolism*; D020387:Food Chain; D055768:Halogenated Diphenyl Ethers / Q000378:metabolism; D006843:Hydrocarbons, Chlorinated / Q000378:metabolism*; D008628:Mercury / Q000378:metabolism*; D011078:Polychlorinated Biphenyls / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D055768:Halogenated Diphenyl Ethers; D006843:Hydrocarbons, Chlorinated; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls; D008628:Mercury
keywords: Biomagnification factors; Fish; Halogenated compounds; Hudson Bay; Mercury; Thick-billed murre