Nuclear abnormalities in erythrocytes and morphometric indexes in the catfish Cathorops spixii (Ariidae) from different sites on the southeastern Brazilian coast

Autor(es)

Azevedo, Juliana de Souza ^[1] ; Braga, Elisabete de Santis ^[2] ; Oliveira Ribeiro, Ciro Alberto

Afiliação do(s) autor(es)

^[1] CQMA, Inst Pesquisas Energet & Nucl, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Oceanog, BR-05508120 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Oceanography; v. 60, n. 3, p. 323-330, JUL-SEP 2012.
• Citações Web of Science: 5

Resumo

Nuclear abnormalities in erythrocytes (NAE) were taken as biomarkers in the catfish Cathorops spixii (Ariidae) sampled in an estuary little affected by human activity (Cananéia) and in three regions (Santos Channel: SC, Santos Bay: SB and São Vicente Channel: SVC) of the Santos-São Vicente estuary impacted by various anthropogenic activities. Increases in NAE were observed in fish from SC and SVC sampled in the summer period as compared with specimens from the Cananéia estuary. These results suggest the presence of genotoxic compounds in these regions. However, the absence of significant differences in micronuclei frequency reflects slight mutagenic effects in these individuals. It is possible that the lower NAE frequency in specimens from SB might be associated with the greater remobilization and dilution of chemicals in this region. The low frequency of NAE in C. spixii from the Cananéia estuary is in accordance with the slight anthropogenic influence in this system, and may be suggestive of the absence of genotoxic and mutagenic effects in these organisms. (AU)

• Processo FAPESP: 05/50769-2 - Materia organica na avaliacao de impacto ambiental no meio marinho: bioquimica, biogeoquimica, bioacumulacao e biotoxinas (mobio).
• Beneficiário: Elisabete de Santis Braga da Graça Saraiva
• Modalidade de apoio: Auxílio à Pesquisa - Regular