Journal
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Volume 88, Issue 1, Pages 54-59Publisher
SPRINGER
DOI: 10.1007/s00128-011-0448-z
Keywords
Guiana dolphin; Sotalia guianensis; Mercury; Brazil
Categories
Funding
- marine mammal research group of Regiao dos Lagos (GEMM-Lagos)
- Fundacao Oswaldo Cruz (FIOCRUZ)
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Total mercury (Hg) was determined in muscle tissue of 20 Guiana dolphins stranded along the coast of Rio de Janeiro state, Brazil, with a mean of 1.07 mu g/g wet weight. Mercury concentrations were positively related to body length, possibly related to the capacity of the dolphins to bioaccumulate this element throughout life. The Hg concentrations were not significantly different between males and females, although females (1.08 mu g/g) showed slightly higher levels than males (1.04 mu g/g). Concentrations were low when compared to results of studies carried out with small cetaceans in the Northern Hemisphere, and with previous studies in the Southeastern Brazil.
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