Assessment of mercury and selenium tissular concentrations and total mercury body burden in 6 Steller sea lion pups from the Aleutian Islands

MARINE POLLUTION BULLETIN

卷:82

Article

Correa, Lucero¹  Rea, Lorrie D.^2,3  Bentzen, Rebecca^4,5  O'Hara, Todd M.^4,5 

[1] Univ Alaska Fairbanks, Dept Chem & Biochem, Fairbanks, AK 99775 USA

[2] Univ Alaska Fairbanks, Water & Environm Res Ctr, Alaska Dept Fish & Game, Div Wildlife Conservat, Fairbanks, AK 99775 USA

[3] Univ Alaska Fairbanks, Water & Environm Res Ctr, Inst Northern Engn, Fairbanks, AK 99775 USA

[4] Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK 99775 USA

[5] Univ Alaska Fairbanks, Dept Vet Med, Fairbanks, AK 99775 USA

关键词: Mercury;    Selenium;    Burden;    Molar ratio;    Steller sea lions;   

DOI  :  10.1016/j.marpolbul.2014.02.022

来源: Elsevier

【 摘 要 】

Concentrations of total mercury ([THg]) and selenium ([TSe]) were measured in several tissue compartments in Steller sea lion (Eumetopias jubatus) pups; in addition we determined specific compartment and body burdens of THg. Compartmental and body burdens were calculated by multiplying specific compartment fresh weight by the [THg] (summing compartment burdens equals body burden). In all 6 pup tissue sets (1) highest [THg] was in hair, (2) lowest [THg] was in bone, and (3) pelt, muscle and liver burdens contributed the top three highest percentages of THg body burden. In 5 of 6 pups the Se:Hg molar ratios among compartments ranged from 0.9 to 43.0. The pup with the highest hair [THg] had Se:Hg molar ratios in 9 of 14 compartments that were <= 0.7 potentially indicating an inadequate [TSe] relative to [THg]. (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

Free