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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine >
Peer-reviewed Journal Articles, etc >
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 | | cadmium | | mercury | | seabird |
| 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 | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/70803 |
| 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)
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Submitter: 石塚 真由美
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