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Marine tucuxi dolphin (Sotalia guianensis) and its interaction with passive gill-net fisheries along the northern coast of the Rio de Janeiro State, Brazil

Published online by Cambridge University Press:  16 April 2009

Jailson Fulgencio de Moura ,
Thais Guimarães Corrêa Sholl ,
Éderson da Silva Rodrigues ,
Sandra Hacon  and
Salvatore Siciliano
Jailson Fulgencio de Moura*
Affiliation:
Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos, Projeto de Monitoramento de Mamíferos Marinhos na Bacia de Campos, CENPES/PETROBRAS & ENSP/FIOCRUZ, Escola Nacional de Saúde Pública, FIOCRUZ, Departamento de Endemias, Rua Leopoldo Bulhões, 1480-6° andar, Manguinhos, Rio de Janeiro, RJ 21041-210 Brazil PPG em Saúde Pública e Meio Ambiente, Escola Nacional de Saúde Pública, ENSP/FIOCRUZ
Thais Guimarães Corrêa Sholl
Affiliation:
Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos, Projeto de Monitoramento de Mamíferos Marinhos na Bacia de Campos, CENPES/PETROBRAS & ENSP/FIOCRUZ, Escola Nacional de Saúde Pública, FIOCRUZ, Departamento de Endemias, Rua Leopoldo Bulhões, 1480-6° andar, Manguinhos, Rio de Janeiro, RJ 21041-210 Brazil PPG em Saúde Pública e Meio Ambiente, Escola Nacional de Saúde Pública, ENSP/FIOCRUZ
Éderson da Silva Rodrigues
Affiliation:
Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos, Projeto de Monitoramento de Mamíferos Marinhos na Bacia de Campos, CENPES/PETROBRAS & ENSP/FIOCRUZ, Escola Nacional de Saúde Pública, FIOCRUZ, Departamento de Endemias, Rua Leopoldo Bulhões, 1480-6° andar, Manguinhos, Rio de Janeiro, RJ 21041-210 Brazil
Sandra Hacon
Affiliation:
Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos, Projeto de Monitoramento de Mamíferos Marinhos na Bacia de Campos, CENPES/PETROBRAS & ENSP/FIOCRUZ, Escola Nacional de Saúde Pública, FIOCRUZ, Departamento de Endemias, Rua Leopoldo Bulhões, 1480-6° andar, Manguinhos, Rio de Janeiro, RJ 21041-210 Brazil
Salvatore Siciliano
Affiliation:
Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos, Projeto de Monitoramento de Mamíferos Marinhos na Bacia de Campos, CENPES/PETROBRAS & ENSP/FIOCRUZ, Escola Nacional de Saúde Pública, FIOCRUZ, Departamento de Endemias, Rua Leopoldo Bulhões, 1480-6° andar, Manguinhos, Rio de Janeiro, RJ 21041-210 Brazil
*
Correspondence should be addressed to: J.F. de Moura, Grupo de Estudos de Mamíferos Marinhos da Região, dos Lagos, Projeto de Monitoramento de Mamíferos Marinhos na, Bacia de Campos, CENPES/PETROBRAS & ENSP/FIOCRUZ, Escola Nacional de Saúde Pública, FIOCRUZ, Departamento de Endemias, Rua Leopoldo Bulhões, 1480-6° andar, Manguinhos, Rio de Janeiro, RJ 21041-210 Brazil email: [email protected]
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Abstract

During a monitoring programme of stranded marine mammals conducted along the north-east coast of the Rio de Janeiro State, Brazil, we collected marine tucuxi dolphins (Sotalia guianensis) stranded along the beach. We examined the carcasses to identify characteristic evidences of fishery by-catch. From July 2001 to August 2007 43 S. guianensis were found in the study area, with an annual mean of 6.1 stranding events. Dolphins stranded with evidence of fishery interaction (‘by-catch’) occurred in almost every year (annual mean = 2). The majority of the by-catch events occurred during winter and spring. Most of the stranded dolphins were sexually mature. From 43 S. guianensis stranded from 2001 to 2007, 32.5% (N = 14) of these presented evidence of by-catch. Twenty-nine other dolphins did not show clear evidence of by-catch or it could not be evaluated. Most of the by-caught dolphins occurred in the northern zones of the study area where gill-net use is intense.

Keywords

Sotalia guianensisincidental captureRio de Janeirofisherydolphinsgill-netsstrandingsdistributioncoast
Type
Research Article
Information
Marine Biodiversity Records , Volume 2 , January 2009 , e82
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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