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Tissue Distribution and Toxicological Risk Assessment of Mercury and Other Elements in Northern Populations of Wolverine (Gulo gulo).
Chételat, John; Jung, Thomas S; Awan, Malik; Baryluk, Steven; Harrower, William; Kukka, Piia M; McClelland, Christine; Mowat, Garth; Pelletier, Nicolas; Rodford, Christine; Stimmelmayr, Raphaela.
Afiliação
  • Chételat J; Environment and Climate Change Canada, National Wildlife Research Centre, Ottawa, ON, Canada. john.chetelat@ec.gc.ca.
  • Jung TS; Department of Environment, Government of Yukon, Whitehorse, YT, Canada.
  • Awan M; Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada.
  • Baryluk S; Department of Environment, Government of Nunavut, Arviat, NU, Canada.
  • Harrower W; Environment and Climate Change, Government of the Northwest Territories, Inuvik, NT, Canada.
  • Kukka PM; Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, BC, Canada.
  • McClelland C; Department of Environment, Government of Yukon, Whitehorse, YT, Canada.
  • Mowat G; Environment and Climate Change Canada, National Wildlife Research Centre, Ottawa, ON, Canada.
  • Pelletier N; Ministry of Forests, Government of British Columbia, Nelson, BC, Canada.
  • Rodford C; Department of Earth, Environmental and Geographic Sciences, University of British Columbia, Kelowna, BC, Canada.
  • Stimmelmayr R; Department of Geography and Environmental Studies, Carleton University, Ottawa, ON, Canada.
Arch Environ Contam Toxicol ; 87(2): 114-126, 2024 Aug.
Article em En | MEDLINE | ID: mdl-39097543
ABSTRACT
Wolverines are facultative scavengers that feed near the top of terrestrial food chains. We characterized concentrations of mercury and other trace elements in tissues of wolverine from a broad geographic area, representing much of their contemporary distribution in northwestern North America. We obtained tissues from 504 wolverines, from which mercury was measured on muscle (n = 448), kidney (n = 222), liver (n = 148), hair (n = 130), and brain (n = 52). In addition, methylmercury, seven trace elements (arsenic, cadmium, chromium, cobalt, lead, nickel, selenium), and arsenic compounds were measured on a subset of samples. Concentrations of mercury and other trace elements varied between tissues and were generally highest in kidney compared to brain, liver and muscle. Mercury was predominately as methylmercury in brain and muscle, but largely as inorganic mercury in liver and kidney. Mercury concentrations of hair were moderately correlated with those of internal tissues (Pearson r = 0.51-0.75, p ≤ 0.004), making hair a good non-lethal indicator of broad spatial or temporal differences in mercury exposure to wolverine. Arsenobetaine was the dominant arsenic compound identified in tissues, and arsenite, arsenocholine and dimethylarsinic acid were also detected. A preliminary risk assessment suggested the cadmium, lead, mercury, and selenium concentrations in our sample of wolverines were not likely to pose a risk of overt toxicological effects. This study generated a comprehensive dataset on mercury and other trace elements in wolverine, which will support future contaminants study of this northern terrestrial carnivore.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cabelo / Mercúrio Limite: Animals Idioma: En Revista: Arch Environ Contam Toxicol Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Canadá País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cabelo / Mercúrio Limite: Animals Idioma: En Revista: Arch Environ Contam Toxicol Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Canadá País de publicação: Estados Unidos