Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná

Detalhes bibliográficos
Autor(a) principal: Vono,Volney
Data de Publicação: 2002
Outros Autores: Silva,Luiz Gustavo M., Maia,Bruno P., Godinho,Hugo P.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista Brasileira de Zoologia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300020
Resumo: The reproductive activity parameters of the teleosts Pimelodus maculatus Lacépède, 1803, Leporinus amblyrhynchus Garavello & Britski, 1987 and Schizodon nasutus Kner, 1859 was evaluated at a newly formed reservoir in the Araguari River, Paraná River basin, Southeast Brazil. The fishes were captured by gill nets bimonthly from November 1997 to November 1998 at three sampling stations. The stages of gonad development were identified macroscopically in the field and then confirmed by histological analysis in the laboratory. The females of all species reached larger standard length than the males. Pimelodus maculatus in reproductive activity were captured only in November, 1997 and January, 1998 whereas L. amblyrhynchus and S. nasutus were in activity throughout the year. The gonadosomatic index reached the peak during the advanced maturation stage in all species, but the hepatosomatic index and coelomic fat index exhibited distinct tendencies. Length at first maturity was 9.5 cm SL for amblyrhynchus females and 17.1 and 13.0 cm SL, respectively, for S. nasutus females and males. L. amblyrhynchus and S. nasutus are partial spawners. The size at first maturity and type of spawning of P. maculatus were not possible to determine in this work.
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spelling Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto ParanáFish reproductionreservoirdam effectsThe reproductive activity parameters of the teleosts Pimelodus maculatus Lacépède, 1803, Leporinus amblyrhynchus Garavello & Britski, 1987 and Schizodon nasutus Kner, 1859 was evaluated at a newly formed reservoir in the Araguari River, Paraná River basin, Southeast Brazil. The fishes were captured by gill nets bimonthly from November 1997 to November 1998 at three sampling stations. The stages of gonad development were identified macroscopically in the field and then confirmed by histological analysis in the laboratory. The females of all species reached larger standard length than the males. Pimelodus maculatus in reproductive activity were captured only in November, 1997 and January, 1998 whereas L. amblyrhynchus and S. nasutus were in activity throughout the year. The gonadosomatic index reached the peak during the advanced maturation stage in all species, but the hepatosomatic index and coelomic fat index exhibited distinct tendencies. Length at first maturity was 9.5 cm SL for amblyrhynchus females and 17.1 and 13.0 cm SL, respectively, for S. nasutus females and males. L. amblyrhynchus and S. nasutus are partial spawners. The size at first maturity and type of spawning of P. maculatus were not possible to determine in this work.Sociedade Brasileira de Zoologia2002-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300020Revista Brasileira de Zoologia v.19 n.3 2002reponame:Revista Brasileira de Zoologia (Online)instname:Sociedade Brasileira de Zoologia (SBZ)instacron:SBZ10.1590/S0101-81752002000300020info:eu-repo/semantics/openAccessVono,VolneySilva,Luiz Gustavo M.Maia,Bruno P.Godinho,Hugo P.por2009-05-15T00:00:00Zoai:scielo:S0101-81752002000300020Revistahttp://calvados.c3sl.ufpr.br/ojs2/index.php/zooONGhttps://old.scielo.br/oai/scielo-oai.php||sbz@bio.ufpr.br1806-969X0101-8175opendoar:2009-05-15T00:00Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ)false
dc.title.none.fl_str_mv Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
title Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
spellingShingle Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
Vono,Volney
Fish reproduction
reservoir
dam effects
title_short Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
title_full Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
title_fullStr Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
title_full_unstemmed Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
title_sort Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná
author Vono,Volney
author_facet Vono,Volney
Silva,Luiz Gustavo M.
Maia,Bruno P.
Godinho,Hugo P.
author_role author
author2 Silva,Luiz Gustavo M.
Maia,Bruno P.
Godinho,Hugo P.
author2_role author
author
author
dc.contributor.author.fl_str_mv Vono,Volney
Silva,Luiz Gustavo M.
Maia,Bruno P.
Godinho,Hugo P.
dc.subject.por.fl_str_mv Fish reproduction
reservoir
dam effects
topic Fish reproduction
reservoir
dam effects
description The reproductive activity parameters of the teleosts Pimelodus maculatus Lacépède, 1803, Leporinus amblyrhynchus Garavello & Britski, 1987 and Schizodon nasutus Kner, 1859 was evaluated at a newly formed reservoir in the Araguari River, Paraná River basin, Southeast Brazil. The fishes were captured by gill nets bimonthly from November 1997 to November 1998 at three sampling stations. The stages of gonad development were identified macroscopically in the field and then confirmed by histological analysis in the laboratory. The females of all species reached larger standard length than the males. Pimelodus maculatus in reproductive activity were captured only in November, 1997 and January, 1998 whereas L. amblyrhynchus and S. nasutus were in activity throughout the year. The gonadosomatic index reached the peak during the advanced maturation stage in all species, but the hepatosomatic index and coelomic fat index exhibited distinct tendencies. Length at first maturity was 9.5 cm SL for amblyrhynchus females and 17.1 and 13.0 cm SL, respectively, for S. nasutus females and males. L. amblyrhynchus and S. nasutus are partial spawners. The size at first maturity and type of spawning of P. maculatus were not possible to determine in this work.
publishDate 2002
dc.date.none.fl_str_mv 2002-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300020
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0101-81752002000300020
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Zoologia
publisher.none.fl_str_mv Sociedade Brasileira de Zoologia
dc.source.none.fl_str_mv Revista Brasileira de Zoologia v.19 n.3 2002
reponame:Revista Brasileira de Zoologia (Online)
instname:Sociedade Brasileira de Zoologia (SBZ)
instacron:SBZ
instname_str Sociedade Brasileira de Zoologia (SBZ)
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reponame_str Revista Brasileira de Zoologia (Online)
collection Revista Brasileira de Zoologia (Online)
repository.name.fl_str_mv Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ)
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