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  • 标题:Nuclear abnormalities in erythrocytes and morphometric indexes in the catfish Cathorops spixii (Ariidae) from different sites on the southeastern Brazilian coast
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  • 作者:Azevedo, Juliana de Souza ; Braga, Elisabete de Santis ; Ribeiro, Ciro Alberto Oliveira
  • 期刊名称:Brazilian Journal of Oceanography
  • 印刷版ISSN:1679-8759
  • 电子版ISSN:1982-436X
  • 出版年度:2012
  • 卷号:60
  • 期号:3
  • 页码:323-330
  • DOI:10.1590/S1679-87592012000300005
  • 出版社:Instituto Oceanográfico da Universidade de São Paulo
  • 摘要: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.
  • 关键词:alterações nucleares;genotoxicidade;biomonitoramento;estuários;bagres;Cathorops spixii
  • 其他关键词:nuclear abnormalities;genotoxicy;biomonitoring;estuaries;catfish;Cathorops spixii
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