Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil

Guribu catfish (Sciades herzbergii) is a resident species in estuaries of Maranhão, Brazil. The aim of this work was to determine the feasibility of integrated analysis of the branchial lesions and gonadosomatic index of Sciades herzbergii in order to evaluate the effects of pollutants in São Marcos...

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Autores principales:	Batista Pinheiro-Sousa,Débora, da Silva de Almeida,Zafira, Fortes Carvalho-Neta,Raimunda Nonata
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2013
Materias:	biomonitoring branchial lesions GSI catfish Ilha dos Caranguejos Brazil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000200009
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spelling	oai:scielo:S0718-560X20130002000092013-08-13Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, BrazilBatista Pinheiro-Sousa,Déborada Silva de Almeida,ZafiraFortes Carvalho-Neta,Raimunda Nonata biomonitoring branchial lesions GSI catfish Ilha dos Caranguejos Brazil Guribu catfish (Sciades herzbergii) is a resident species in estuaries of Maranhão, Brazil. The aim of this work was to determine the feasibility of integrated analysis of the branchial lesions and gonadosomatic index of Sciades herzbergii in order to evaluate the effects of pollutants in São Marcos' Bay. The first site (S1) is located near the Ilha dos Caranguejos and was used as a reference area for being an environmental protection area. The second site (S2) is located near the ALUMAR/ALCOA port, and was used as a potentially polluted area. Fish were collected at each site, forty-eight in S1 and forty in S2. Gills were fixed in 10% formalin, and usual histological techniques were used in the first right gill arch, with inclusion in paraffin and sections of 5 µm thickness. There were no histopathological changes in animals captured at the reference site. However, in those catfish collected in the potentially contaminated area it was observed several branchial lesions, such as lifting of the lamellar epithelium, fusion of some secondary lamellae, hypertrophy of epithelial cells and lamellar aneurysm. The analysis using the gonadosomatic index (GSI) showed significant differences, being higher in fish analyzed from the reference area (P < 0.05). The branchial lesions and GSI were sensitive for monitoring environmental impacts of different locations at São Marcos' Bay, Maranhão, Brazil.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.41 n.2 20132013-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000200009en10.3856/vol41-issue2-fulltext-9
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	biomonitoring branchial lesions GSI catfish Ilha dos Caranguejos Brazil
spellingShingle	biomonitoring branchial lesions GSI catfish Ilha dos Caranguejos Brazil Batista Pinheiro-Sousa,Débora da Silva de Almeida,Zafira Fortes Carvalho-Neta,Raimunda Nonata Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil
description	Guribu catfish (Sciades herzbergii) is a resident species in estuaries of Maranhão, Brazil. The aim of this work was to determine the feasibility of integrated analysis of the branchial lesions and gonadosomatic index of Sciades herzbergii in order to evaluate the effects of pollutants in São Marcos' Bay. The first site (S1) is located near the Ilha dos Caranguejos and was used as a reference area for being an environmental protection area. The second site (S2) is located near the ALUMAR/ALCOA port, and was used as a potentially polluted area. Fish were collected at each site, forty-eight in S1 and forty in S2. Gills were fixed in 10% formalin, and usual histological techniques were used in the first right gill arch, with inclusion in paraffin and sections of 5 µm thickness. There were no histopathological changes in animals captured at the reference site. However, in those catfish collected in the potentially contaminated area it was observed several branchial lesions, such as lifting of the lamellar epithelium, fusion of some secondary lamellae, hypertrophy of epithelial cells and lamellar aneurysm. The analysis using the gonadosomatic index (GSI) showed significant differences, being higher in fish analyzed from the reference area (P < 0.05). The branchial lesions and GSI were sensitive for monitoring environmental impacts of different locations at São Marcos' Bay, Maranhão, Brazil.
author	Batista Pinheiro-Sousa,Débora da Silva de Almeida,Zafira Fortes Carvalho-Neta,Raimunda Nonata
author_facet	Batista Pinheiro-Sousa,Débora da Silva de Almeida,Zafira Fortes Carvalho-Neta,Raimunda Nonata
author_sort	Batista Pinheiro-Sousa,Débora
title	Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil
title_short	Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil
title_full	Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil
title_fullStr	Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil
title_full_unstemmed	Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil
title_sort	integrated analysis of two biomarkers in sciades herzbergii (ariidae, siluriformes), to assess the environmental impact at são marcos' bay, maranhão, brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000200009
work_keys_str_mv	AT batistapinheirosousadebora integratedanalysisoftwobiomarkersinsciadesherzbergiiariidaesiluriformestoassesstheenvironmentalimpactatsaomarcosbaymaranhaobrazil AT dasilvadealmeidazafira integratedanalysisoftwobiomarkersinsciadesherzbergiiariidaesiluriformestoassesstheenvironmentalimpactatsaomarcosbaymaranhaobrazil AT fortescarvalhonetaraimundanonata integratedanalysisoftwobiomarkersinsciadesherzbergiiariidaesiluriformestoassesstheenvironmentalimpactatsaomarcosbaymaranhaobrazil
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Integrated analysis of two biomarkers in Sciades herzbergii (Ariidae, Siluriformes), to assess the environmental impact at São Marcos' Bay, Maranhão, Brazil

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