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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

TISSUE-SPECIFIC MERCURY CONCENTRATIONS IN TWO CATFISH SPECIES FROM THE BRAZILIAN COAST

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Author(s):
Azevedo, Juliana de Souza [1] ; de Souza Sarkis, Jorge Eduardo [1] ; Oliveira, Talita Aparecida [1] ; Ulrich, Joao Cristiano [1]
Total Authors: 4
Affiliation:
[1] CQMA, IPEN, BR-05508000 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Brazilian Journal of Oceanography; v. 60, n. 2, p. 211-U107, APR-JUN 2012.
Web of Science Citations: 16
Abstract

Some regions of Brazil have particularly high levels of mercury (Hg) emissions due to industrial activities, and their fish species may therefore suffer high levels of contamination through bioaccumulation. In this paper we assess Hg contamination in the muscle, liver, gills and blood of two different species of catfish collected from the Cananeia and Santos-Sao Vicente estuaries, Sao Paulo State, Brazil. Fish from the most polluted site (Santos-Sao Vicente) showed higher median Hg concentrations in both species (Cathorops spixii - liver: 1530 mu g Kg(-1), muscle: 327 mu g Kg(-1) and gill: 101 mu g Kg(-1); Genidens genidens - liver: 2617 mu g Kg(-1), muscle: 393 mu g Kg(-1) and gill: 118 mu g Kg(-1)). Multivariate analysis revealed the importance and influence of key biological variables (size, condition, etc.) in determining the overall level of Hg and its distribution within different tissues. (AU)