%0 Journal Article
%T Biomarkers responses in fish (Atherinella brasiliensis) of paranagu¨¢ bay, southern Brazil, for assessment of pollutant effects
%A Ciro Alberto de Oliveira Ribeiro
%A Alberto Katsumiti
%A Patr¨ªcia Fran£¿a
%A Jocieli Maschio
%J Brazilian Journal of Oceanography
%D 2013
%I Universidade de S?o Paulo
%X Paranagu¨¢ bay is a complex estuary located in southern Brazil containing three protected areas listed by UNESCO. Historically, the estuary has been affected by urban, industrial, agricultural and harbor activities, and occasional accidents. Specifically, the explosion of the Chilean ship Vicu a in December 2004 spilled methanol and crude and fuel oils which affected both protected and non-protected areas. The present study sought to investigate the pollution threat to aquatic organisms in order to evaluate the potential effects of pollutants. One hundred and twenty adult fish Atherinella brasiliensis were collected from different sites within Paranagu¨¢ estuary, including the harbor and open ocean, during summer, autumn and winter of 2005. Among the biomarkers, the somatic index, chemical analysis of bile, biochemical, genetic and morphological parameters were considered. Chemical analysis of bile showed a continuous bioavailability of polycyclic aromatic hydrocarbons (PAHs) according to proximity to the harbor site. The histopathological findings have demonstrated aconsiderable incidence of severe pathologies in the liver and gills, corroborated by biochemical disturbances and genetic damage. These findings indicate that more studies are necessary to evaluate both water quality and fish health so as to permit a better analysis of the impact of pollution in Paranagu¨¢ estuary. A Baia de Paranagu¨¢ ¨¦ um complexo estuarino localizado no sul do Brasil constitu¨ªdo de tr¨ºs ¨¢reas de prote  o ambiental listadas pela UNESCO. Historicamente, o estu¨¢rio tem sido afetado por atividade urbana, industrial, agricultura e portu¨¢ria, e eventualmente por acidentes. Particularmente a explos o do navio Chileno Vicu a em dezembro de 2004 derramou metanol, ¨®leo cru e combust¨ªvel atingindo ¨¢reas protegidas e n o protegidas. O presente estudo tem por objetivo investigar a polui  o em organismos aqu¨¢ticos. Cento e vinte indiv¨ªduos adultos do peixe Atherinella brasiliensis foram coletados em quatro diferentes pontos de coleta no estu¨¢rio de Paranagu¨¢, partindo do porto at¨¦ o oceano aberto nos per¨ªodos de ver o, inverno e primavera de 2005. Os ¨ªndices som¨¢ticos, parametros qu¨ªmicos, enzim¨¢ticos, gen¨¦ticos e morfol¨®gicos foram considerados. As an¨¢lises histopatol¨®gicas demonstraram expressiva incid¨ºncia de patologia no f¨ªgado e nas branquias algumas vezes corroboradas pelas altera  es bioqu¨ªmicas. Danos gen¨¦ticos e anormalidades gen¨¦ticas tamb¨¦m foram observados. As an¨¢lises qu¨ªmicas na bile mostraram uma cont¨ªnua biodisponibilidade de hidrocarbonetos polic¨ªclicos arom¨¢ticos para os
%K Biomonitoramento
%K Biomarcadores
%K Aterinella brasiliensis
%K Baia de Paranagu¨¢
%K Biomonitoring
%K Biomarkers
%K Aterinella brasiliensis
%K Paranagu¨¢ bay
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592013000100001