Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil

Detalhes bibliográficos
Autor(a) principal: Mai, Ana Cecilia Giacometti
Data de Publicação: 2007
Outros Autores: Garcia, Alexandre Miranda, Vieira Sobrinho, João Paes, Mai, Mônica Giacometti
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da FURG (RI FURG)
Texto Completo: http://repositorio.furg.br/handle/1/1944
Resumo: Jenynsia multidentata (Jenyns, 1842) is a viviparous fish found year-round in the estuary zone of Patos Lagoon and represents one of the dominant species in its shallow areas. Although biological and ecological aspects of the J. multidentata's population occurring in Patos Lagoon estuary have been previously investigated, there is no published information regarding its reproductive biology in this estuarine area. The reproductive cycle of this species in the estuarine zone of Patos Lagoon occurred from September to May, showing a positive correlation with water temperature (r = 0.76). The sexual ratio in the estuary was 1.98/1 (female/male) and female size and fecundity had a positive correlation. It was observed that J. multidentata presented a second pregnancy during January and February months, which has not been described in previous studies.
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spelling Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, BrazilAspectos reprodutivos do barrigudinho Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) no estuário da Laguna dos Patos, Rio Grande do Sul, BrasilAnablepidaeReproductionFishViviparousEstuariesReproduçãoPeixeVivíparoEstuáriosJenynsia multidentata (Jenyns, 1842) is a viviparous fish found year-round in the estuary zone of Patos Lagoon and represents one of the dominant species in its shallow areas. Although biological and ecological aspects of the J. multidentata's population occurring in Patos Lagoon estuary have been previously investigated, there is no published information regarding its reproductive biology in this estuarine area. The reproductive cycle of this species in the estuarine zone of Patos Lagoon occurred from September to May, showing a positive correlation with water temperature (r = 0.76). The sexual ratio in the estuary was 1.98/1 (female/male) and female size and fecundity had a positive correlation. It was observed that J. multidentata presented a second pregnancy during January and February months, which has not been described in previous studies.Jenynsia multidentata (Jenyns, 1842) é um peixe vivíparo lecitrotófico residente do estuário da Lagoa dos Patos e dominante nas zonas rasas. Estudos sobre a reprodução desta espécie já foram realizados em ambientes límnicos, e nesse estudo se pretendeu caracterizar sua reprodução em águas mixohalinas. Sua proporção sexual no estuário foi 1,98: 1 (fêmea/macho) e constatou-se que quanto maior o comprimento da fêmea, maior será sua fecundidade. Neste ambiente o ciclo reprodutivo da espécie estende-se de setembro a maio, havendo correlação positiva com a temperatura da água (r = 0,76). Observou-se que J. multidentata apresenta segunda gestação nos meses de janeiro e fevereiro, fato este ainda não descrito para a espécie.2012-03-20T19:56:50Z2012-03-20T19:56:50Z2007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMAI, Ana Cecilia Giacometti et al. Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil. Pan-American Journal of Aquatic Sciences, v. 2, n. 1, p. 40-46, 2007. Disponível em: <http://www.panamjas.org/pdf_artigos/PANAMJAS_2%281%29_40-46.pdf>. Acesso em: 11 jan. 2012.1809-9009http://repositorio.furg.br/handle/1/1944engMai, Ana Cecilia GiacomettiGarcia, Alexandre MirandaVieira Sobrinho, João PaesMai, Mônica Giacomettiinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2022-10-19T19:38:07Zoai:repositorio.furg.br:1/1944Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2022-10-19T19:38:07Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false
dc.title.none.fl_str_mv Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
Aspectos reprodutivos do barrigudinho Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) no estuário da Laguna dos Patos, Rio Grande do Sul, Brasil
title Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
spellingShingle Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
Mai, Ana Cecilia Giacometti
Anablepidae
Reproduction
Fish
Viviparous
Estuaries
Reprodução
Peixe
Vivíparo
Estuários
title_short Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
title_full Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
title_fullStr Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
title_full_unstemmed Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
title_sort Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil
author Mai, Ana Cecilia Giacometti
author_facet Mai, Ana Cecilia Giacometti
Garcia, Alexandre Miranda
Vieira Sobrinho, João Paes
Mai, Mônica Giacometti
author_role author
author2 Garcia, Alexandre Miranda
Vieira Sobrinho, João Paes
Mai, Mônica Giacometti
author2_role author
author
author
dc.contributor.author.fl_str_mv Mai, Ana Cecilia Giacometti
Garcia, Alexandre Miranda
Vieira Sobrinho, João Paes
Mai, Mônica Giacometti
dc.subject.por.fl_str_mv Anablepidae
Reproduction
Fish
Viviparous
Estuaries
Reprodução
Peixe
Vivíparo
Estuários
topic Anablepidae
Reproduction
Fish
Viviparous
Estuaries
Reprodução
Peixe
Vivíparo
Estuários
description Jenynsia multidentata (Jenyns, 1842) is a viviparous fish found year-round in the estuary zone of Patos Lagoon and represents one of the dominant species in its shallow areas. Although biological and ecological aspects of the J. multidentata's population occurring in Patos Lagoon estuary have been previously investigated, there is no published information regarding its reproductive biology in this estuarine area. The reproductive cycle of this species in the estuarine zone of Patos Lagoon occurred from September to May, showing a positive correlation with water temperature (r = 0.76). The sexual ratio in the estuary was 1.98/1 (female/male) and female size and fecundity had a positive correlation. It was observed that J. multidentata presented a second pregnancy during January and February months, which has not been described in previous studies.
publishDate 2007
dc.date.none.fl_str_mv 2007
2012-03-20T19:56:50Z
2012-03-20T19:56:50Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv MAI, Ana Cecilia Giacometti et al. Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil. Pan-American Journal of Aquatic Sciences, v. 2, n. 1, p. 40-46, 2007. Disponível em: <http://www.panamjas.org/pdf_artigos/PANAMJAS_2%281%29_40-46.pdf>. Acesso em: 11 jan. 2012.
1809-9009
http://repositorio.furg.br/handle/1/1944
identifier_str_mv MAI, Ana Cecilia Giacometti et al. Reproductive aspects of the one-sided livebearer Jenynsia multidentata (Jenyns, 1842) (Cyprinodontiformes) in the Patos Lagoon estuary, Brazil. Pan-American Journal of Aquatic Sciences, v. 2, n. 1, p. 40-46, 2007. Disponível em: <http://www.panamjas.org/pdf_artigos/PANAMJAS_2%281%29_40-46.pdf>. Acesso em: 11 jan. 2012.
1809-9009
url http://repositorio.furg.br/handle/1/1944
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da FURG (RI FURG)
instname:Universidade Federal do Rio Grande (FURG)
instacron:FURG
instname_str Universidade Federal do Rio Grande (FURG)
instacron_str FURG
institution FURG
reponame_str Repositório Institucional da FURG (RI FURG)
collection Repositório Institucional da FURG (RI FURG)
repository.name.fl_str_mv Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)
repository.mail.fl_str_mv
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