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Concentrations of trace elements in eggs and blood of spectacled and common eiders on Yukon-Kuskokwim Delta, Alaska, USA

Environmental Toxicology and Chemistry

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Abstract

We examined the relations among nesting success, egg viability, and blood and egg concentrations of As, Cd, Pb, Hg, and Se in a threatened population of spectacled eiders (Somateria fischeri) and a sympatric population of common eiders (S. mollissima) on the Yukona??Kuskokwim Delta, Alaska, USA, during 1995 and 1996. During the early breeding season, males and females had mean Se concentrations in their blood of 19.2 I?g/g and 12.8 I?g/g wet weight, respectively. Blood Se concentrations of females were correlated with egg concentrations. During brood rearing, blood Se levels were higher in adult females than in ducklings. Blood concentrations of Pb in spectacled eider females were higher than in common eider females captured at hatching, but blood concentrations of Se were similar. Trace element concentrations were not related to nest success or egg viability. We submit that nest success and egg viability of spectacled eiders are not related to concentrations of the trace elements we measured. Because blood Se concentrations declined rapidly through the breeding season and were not related to nest success or egg viability, we suggest that spectacled eiders are exposed to high concentrations of Se during winter that pose little threat to this population.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Concentrations of trace elements in eggs and blood of spectacled and common eiders on Yukon-Kuskokwim Delta, Alaska, USA
Series title:
Environmental Toxicology and Chemistry
Volume
21
Issue:
8
Year Published:
2002
Language:
English
Contributing office(s):
National Wildlife Health Center
Description:
p. 1673-1678
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Environmental Toxicology and Chemistry
First page:
1673
Last page:
1678
Number of Pages:
6