Trace element and metallothionein concentrations in seabirds from the Canadian Arctic.
Environ Toxicol Chem
; 27(3): 645-51, 2008 Mar.
Article
in En
| MEDLINE
| ID: mdl-17944549
Livers and kidneys were collected for five seabird species from the Canadian Arctic during the 1983 and 1991 to 1993 breeding seasons. Livers were analyzed for Cd, Hg, Pb, and Se, and kidneys were analyzed for Cd, Cu, Zn, and metallothionein (MT). Concentrations of the essential elements, Cu and Zn, were in agreement with those previously published in the literature. Thick-billed murres (Uria lomvia) from Ivujivik on the Hudson Strait/Hudson Bay coast in northwestern Quebec (Canada) had the highest mean renal concentrations of Cu, Zn, and Cd. Among the four species collected from Prince Leopold Island, northern fulmars (Fulmarus glacialis) had the highest hepatic concentrations of both Cd and Hg. The highest Se concentrations were found in northern fulmars and black-legged kittiwakes (Rissa tridactyla) from Prince Leopold Island. Hepatic Pb concentrations were low (<0.3 microg/g dry wt) in all species at all locations. Metallothionein concentrations were positively correlated with Cd and Zn for all species combined but were not correlated with Cu in any species. No significant relationships were found between MT and Cu or Zn in black guillemots (Cepphus grylle) or glaucous gulls (Larus hyperboreus). To our knowledge, this is the first report of MT concentrations and their relationships with trace metals in Arctic seabirds.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Trace Elements
/
Charadriiformes
/
Metallothionein
Limits:
Animals
Country/Region as subject:
America do norte
Language:
En
Journal:
Environ Toxicol Chem
Year:
2008
Document type:
Article
Affiliation country:
Canada
Country of publication:
United States