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Contamination status and accumulation characteristics of heavy metals and arsenic in five seabird species from the central Bering Sea

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Title: Contamination status and accumulation characteristics of heavy metals and arsenic in five seabird species from the central Bering Sea
Authors: Ishii, Chihiro Browse this author
Ikenaka, Yoshinori Browse this author →KAKEN DB
Nakayama, Shouta M. M. Browse this author →KAKEN DB
Mizukawa, Hazuki Browse this author →KAKEN DB
Yohannes, Yared Beyene Browse this author
Watanuki, Yutaka Browse this author →KAKEN DB
Fukuwaka, Masaaki Browse this author
Ishizuka, Mayumi Browse this author →KAKEN DB
Keywords: Bering Sea
Issue Date: Apr-2017
Publisher: 公益社団法人 日本獣医学会
Journal Title: Journal of veterinary medical science
Volume: 79
Issue: 4
Start Page: 807
End Page: 814
Publisher DOI: 10.1292/jvms.16-0441
Abstract: Seabirds are marine top predators and accumulate high levels of metals and metalloids in their tissues. Contamination by metals in the highly productive offshore region has become a matter of public concern. It is home to 80% of the seabird population in the U.S.A., 95% of northern fur seals (Callorhinus ursinus), and major populations of Steller sea lions (Eumetopias jubatus), walruses (Odobenus rosmarus) and whales. Here, the concentrations of eight heavy metals (Hg, Cd, Cr, Co, Ni, Cu, Zn and Pb) and a metalloid (As) in the liver and kidneys of the northern fulmar (Fulmarus glacialis), thick-billed murre (Uria lomvia), short-tailed shearwater (Puffinus tenuirostris), tufted puffin (Fratercula cirrhata) and horned puffin (Fratercula corniculata) collected in the Bering Sea were measured. As proxies of trophic level and habitat, nitrogen (delta N-15) and carbon (delta C-13) stable isotope ratios of breast muscles were also measured. Hepatic Hg concentration was high in northern fulmar, whereas Cd level was high in tufted puffin and northern fulmar. The Hg concentration and d15N value were positively correlated across individual birds, suggesting that Hg uptake was linked to the trophic status of consumed prey. Furthermore, Hg concentration in our study was higher than those of the same species of seabirds collected in 1990.
Rights: © 2017 The Japanese Society of Veterinary Science
Type: article
Appears in Collections:獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 石塚 真由美

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