Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil

Detalhes bibliográficos
Autor(a) principal: Hartz,Sandra Maria
Data de Publicação: 1998
Outros Autores: Bruschi Junior,Willi, Formehl,Márcio Vanini
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=S0101-81751998000300005
Resumo: In the present study it was examined the age and growth of Gymnogeophagus lacustris Reis & Malabarba, 1988 in Caconde lagoon (Tramandaí River Basin). The specimens (1080 males and 267 females) were collected monthly, between July 1992 and June 1993. The growth curve in total length was obtained by von Bettalanffy expression and the weight curve through the dedutive method supported by the mathematical expressions of the length growth curve and the length/weight relationship. Formation of the annulli in scales ocurred between winter and spring, and the first anual ring appears when the animals are aproximately 1.5 years old. L∞ and W∞ obtained for males and females, were 206.6mm and 157.3g and 120.2mm and 30.2g, respectively, demonstrating a characteristic sexual dimorfism for the species.
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spelling Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, BrasilGymnogeophagusgrowthcoastal lagoonRio Grande do SulBrazilIn the present study it was examined the age and growth of Gymnogeophagus lacustris Reis & Malabarba, 1988 in Caconde lagoon (Tramandaí River Basin). The specimens (1080 males and 267 females) were collected monthly, between July 1992 and June 1993. The growth curve in total length was obtained by von Bettalanffy expression and the weight curve through the dedutive method supported by the mathematical expressions of the length growth curve and the length/weight relationship. Formation of the annulli in scales ocurred between winter and spring, and the first anual ring appears when the animals are aproximately 1.5 years old. L∞ and W∞ obtained for males and females, were 206.6mm and 157.3g and 120.2mm and 30.2g, respectively, demonstrating a characteristic sexual dimorfism for the species.Sociedade Brasileira de Zoologia1998-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300005Revista Brasileira de Zoologia v.15 n.3 1998reponame:Revista Brasileira de Zoologia (Online)instname:Sociedade Brasileira de Zoologia (SBZ)instacron:SBZ10.1590/S0101-81751998000300005info:eu-repo/semantics/openAccessHartz,Sandra MariaBruschi Junior,WilliFormehl,Márcio Vaninipor2009-07-10T00:00:00Zoai:scielo:S0101-81751998000300005Revistahttp://calvados.c3sl.ufpr.br/ojs2/index.php/zooONGhttps://old.scielo.br/oai/scielo-oai.php||sbz@bio.ufpr.br1806-969X0101-8175opendoar:2009-07-10T00:00Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ)false
dc.title.none.fl_str_mv Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
title Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
spellingShingle Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
Hartz,Sandra Maria
Gymnogeophagus
growth
coastal lagoon
Rio Grande do Sul
Brazil
title_short Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
title_full Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
title_fullStr Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
title_full_unstemmed Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
title_sort Idade e crescimento de Gymnogeophagus lacustris Reis & Malabarba, um Cichlidae endêmico da bacia hidrográfica do Rio Tramandaí, Rio Grande do Sul, Brasil
author Hartz,Sandra Maria
author_facet Hartz,Sandra Maria
Bruschi Junior,Willi
Formehl,Márcio Vanini
author_role author
author2 Bruschi Junior,Willi
Formehl,Márcio Vanini
author2_role author
author
dc.contributor.author.fl_str_mv Hartz,Sandra Maria
Bruschi Junior,Willi
Formehl,Márcio Vanini
dc.subject.por.fl_str_mv Gymnogeophagus
growth
coastal lagoon
Rio Grande do Sul
Brazil
topic Gymnogeophagus
growth
coastal lagoon
Rio Grande do Sul
Brazil
description In the present study it was examined the age and growth of Gymnogeophagus lacustris Reis & Malabarba, 1988 in Caconde lagoon (Tramandaí River Basin). The specimens (1080 males and 267 females) were collected monthly, between July 1992 and June 1993. The growth curve in total length was obtained by von Bettalanffy expression and the weight curve through the dedutive method supported by the mathematical expressions of the length growth curve and the length/weight relationship. Formation of the annulli in scales ocurred between winter and spring, and the first anual ring appears when the animals are aproximately 1.5 years old. L∞ and W∞ obtained for males and females, were 206.6mm and 157.3g and 120.2mm and 30.2g, respectively, demonstrating a characteristic sexual dimorfism for the species.
publishDate 1998
dc.date.none.fl_str_mv 1998-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300005
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0101-81751998000300005
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.15 n.3 1998
reponame:Revista Brasileira de Zoologia (Online)
instname:Sociedade Brasileira de Zoologia (SBZ)
instacron:SBZ
instname_str Sociedade Brasileira de Zoologia (SBZ)
instacron_str SBZ
institution SBZ
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)
repository.mail.fl_str_mv ||sbz@bio.ufpr.br
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