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

Autor(es)

Azevedo, Juliana de Souza ^[1] ; de Souza Sarkis, Jorge Eduardo ^[1] ; Oliveira, Talita Aparecida ^[1] ; Ulrich, Joao Cristiano ^[1]

Afiliação do(s) autor(es)

^[1] CQMA, IPEN, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Oceanography; v. 60, n. 2, p. 211-U107, APR-JUN 2012.
• Citações Web of Science: 16

Resumo

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)

• Processo FAPESP: 08/58261-6 - Caracterização e quantificação de metalotioneínas e metais traço por HPLC/HR-ICP MS e RT-PCR em peixes submetidos a contaminação antropogênica: uma abordagem em metalômica
• Beneficiário: Juliana de Souza Azevedo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado