期刊
MARINE POLLUTION BULLETIN
卷 117, 期 1-2, 页码 178-183出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2017.01.084
关键词
Harlequin duck; Histrionicus histrionicus; Alaska; Mercury; Blue mussel
We compared total mercury (Hg) concentrations in whole blood of harlequin ducks (Histrionicus histrionicus) sampled within and among two geographically distinct locations and across three years in southwest Alaska. Blue mussels were collected to assess correlation between Hg concentrations in locally available forage and birds. Mercury concentrations in harlequin duck blood were significantly higher at Unalaska Island (0.31 +/- 0.19 mean +/- SD, mu g/g blood) than Kodiak Island (0.04 +/- 0.02 mean +/- SD, mu g/g blood). We found no evidence for annual variation in blood Hg concentration between years at Unalaska Island. However, blood Hg concentration did vary among specific sampling locations (i.e., bays) at Unalaska Island. Findings from this study demonstrate harlequin ducks are exposed to environmental sources of Hg, and whole blood Hg concentrations are associated with their local food source. (C) 2017 Elsevier Ltd. All rights reserved.
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