SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL

Detalhes bibliográficos
Autor(a) principal: Nascimento, Wallace Silva
Data de Publicação: 2012
Outros Autores: Yamamoto, Maria Emília, Chellappa, Sathyabama
Tipo de documento: Artigo
Idioma: por
Título da fonte: Biota Amazônia
Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/434
Resumo: Hypsolebias antenori is an annual native fish from the Brazilian semiarid region. This species hatch during the rainy season, grow rapidly and reproduce in the beginning of the dry season. When the water puddles dry out, the entire population dies. The eggs which are buried in the bottom of the dried pools are resistant and they go through diapause stages, during which time the embryonic development is temporarily stagnant. With the onset of the rainy season, the eggs hatch and a new generation is formed. This work aimed to investigate the sex ratio and length-weight relationship of H. antenori. A total 66 samples were collected (21 males and 45 females) from the seasonl pools of Jaguaribe river basin in Russas, Ceará of Northeastern Brazil. Males were easily identified due to their intense colouration and well developed fins. The fish were measured, weighed and their taxonomy was checked. The sex ratio showed a significant predominance of females (1M: 1.7 F). The males were larger and heavier than the females. The equation of the relationship total weight and total length was Wt = 0.0271Lt3,8937, indicating a positive allometric growth, with a higher increase in weight than in length. These are pioneering biological information about H. antenori of the Brazilian semiarid region.Keywords: Hypsolebias antenori; Rivulidae; sex ratio; length-weight relationship.
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spelling SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZILPROPORÇÃO SEXUAL E RELAÇÃO PESO-COMPRIMENTO DO PEIXE ANUAL Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) DE POÇAS TEMPORÁRIAS DA REGIÃO SEMIÁRIDA DO BRASILHypsolebias antenori is an annual native fish from the Brazilian semiarid region. This species hatch during the rainy season, grow rapidly and reproduce in the beginning of the dry season. When the water puddles dry out, the entire population dies. The eggs which are buried in the bottom of the dried pools are resistant and they go through diapause stages, during which time the embryonic development is temporarily stagnant. With the onset of the rainy season, the eggs hatch and a new generation is formed. This work aimed to investigate the sex ratio and length-weight relationship of H. antenori. A total 66 samples were collected (21 males and 45 females) from the seasonl pools of Jaguaribe river basin in Russas, Ceará of Northeastern Brazil. Males were easily identified due to their intense colouration and well developed fins. The fish were measured, weighed and their taxonomy was checked. The sex ratio showed a significant predominance of females (1M: 1.7 F). The males were larger and heavier than the females. The equation of the relationship total weight and total length was Wt = 0.0271Lt3,8937, indicating a positive allometric growth, with a higher increase in weight than in length. These are pioneering biological information about H. antenori of the Brazilian semiarid region.Keywords: Hypsolebias antenori; Rivulidae; sex ratio; length-weight relationship.Hypsolebias antenori é uma espécie de peixe anual nativo do semiárido brasileiro. Os peixes desta espécie quando nascem, crescem rapidamente, reproduzem e no período de estiagem quando a poça seca, toda população morre. Os ovos resistentes depositados nos substrato da poça seca são capazes de passar por um estagio de diapausa, com seu estágio de desenvolvimento embrionário temporariamente estacionado. Com a chegada do período de chuvas, os ovos eclodem e uma nova geração é formada. O objetivo deste trabalho foi verificar a proporção sexual e a relação peso-comprimento desta espécie pouco estudada. Foram capturados 66 exemplares do H. antenori, sendo 21 machos e 45 fêmeas, em poças temporárias da bacia do rio Jaguaribe em Russas, CE. Os machos foram facilmente identificados por apresentarem um padrão de coloração intensa com nadadeiras mais desenvolvidas. Todos os peixes foram medidos, pesados e sua taxonomia foi confirmada. A proporção sexual apresentou uma predominância significativa de fêmeas (1M: 1,7 F). Os machos foram maiores em comprimento e em peso. A equação originada da relação peso total e comprimento total foi Wt = 0,0271Lt3,8937, apresentando um crescimento alométrico positivo, indicando uma maior incremento no peso do que em comprimento. Estas são as informações biológicas pioneiras para a H. antenori do semiárido brasileiro.Palavras-chave: Hypsolebias antenori, Rivulidae, Proporção sexual, Relação peso-comprimento.Universidade Federal do AmapáCNPqNascimento, Wallace SilvaYamamoto, Maria EmíliaChellappa, Sathyabama2012-07-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArtigo Avaliado pelos Paresapplication/pdfhttps://periodicos.unifap.br/index.php/biota/article/view/43410.18561/2179-5746/biotaamazonia.v2n1p37-44Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota); v. 2, n. 1 (2012); 37-442179-5746reponame:Biota Amazôniainstname:Universidade Federal do Amapá (UNIFAP)instacron:UNIFAPporhttps://periodicos.unifap.br/index.php/biota/article/view/434/v2n1p37-44.pdfDireitos autorais 2012 Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota)http://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess2016-04-18T20:33:22Zoai:ojs.pkp.sfu.ca:article/434Revistahttp://periodicos.unifap.br/index.php/biotaONGhttps://periodicos.unifap.br/index.php/biota/oai||juliosa@unifap.br2179-57462179-5746opendoar:2016-04-18T20:33:22Biota Amazônia - Universidade Federal do Amapá (UNIFAP)false
dc.title.none.fl_str_mv SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
PROPORÇÃO SEXUAL E RELAÇÃO PESO-COMPRIMENTO DO PEIXE ANUAL Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) DE POÇAS TEMPORÁRIAS DA REGIÃO SEMIÁRIDA DO BRASIL
title SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
spellingShingle SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
Nascimento, Wallace Silva
title_short SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
title_full SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
title_fullStr SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
title_full_unstemmed SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
title_sort SEX RATIO AND LENGTH-WEIGHT RELATIONSHIP OF THE ANNUAL FISH Hypsolebias antenori (CYPRINODONTIFORMES: RIVULIDAE) IN TEMPORARY POOLS OF THE SEMIARID REGION OF BRAZIL
author Nascimento, Wallace Silva
author_facet Nascimento, Wallace Silva
Yamamoto, Maria Emília
Chellappa, Sathyabama
author_role author
author2 Yamamoto, Maria Emília
Chellappa, Sathyabama
author2_role author
author
dc.contributor.none.fl_str_mv
CNPq
dc.contributor.author.fl_str_mv Nascimento, Wallace Silva
Yamamoto, Maria Emília
Chellappa, Sathyabama
description Hypsolebias antenori is an annual native fish from the Brazilian semiarid region. This species hatch during the rainy season, grow rapidly and reproduce in the beginning of the dry season. When the water puddles dry out, the entire population dies. The eggs which are buried in the bottom of the dried pools are resistant and they go through diapause stages, during which time the embryonic development is temporarily stagnant. With the onset of the rainy season, the eggs hatch and a new generation is formed. This work aimed to investigate the sex ratio and length-weight relationship of H. antenori. A total 66 samples were collected (21 males and 45 females) from the seasonl pools of Jaguaribe river basin in Russas, Ceará of Northeastern Brazil. Males were easily identified due to their intense colouration and well developed fins. The fish were measured, weighed and their taxonomy was checked. The sex ratio showed a significant predominance of females (1M: 1.7 F). The males were larger and heavier than the females. The equation of the relationship total weight and total length was Wt = 0.0271Lt3,8937, indicating a positive allometric growth, with a higher increase in weight than in length. These are pioneering biological information about H. antenori of the Brazilian semiarid region.Keywords: Hypsolebias antenori; Rivulidae; sex ratio; length-weight relationship.
publishDate 2012
dc.date.none.fl_str_mv 2012-07-31
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Artigo Avaliado pelos Pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.unifap.br/index.php/biota/article/view/434
10.18561/2179-5746/biotaamazonia.v2n1p37-44
url https://periodicos.unifap.br/index.php/biota/article/view/434
identifier_str_mv 10.18561/2179-5746/biotaamazonia.v2n1p37-44
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.unifap.br/index.php/biota/article/view/434/v2n1p37-44.pdf
dc.rights.driver.fl_str_mv Direitos autorais 2012 Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota)
http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2012 Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota)
http://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv





dc.publisher.none.fl_str_mv Universidade Federal do Amapá
publisher.none.fl_str_mv Universidade Federal do Amapá
dc.source.none.fl_str_mv Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota); v. 2, n. 1 (2012); 37-44
2179-5746
reponame:Biota Amazônia
instname:Universidade Federal do Amapá (UNIFAP)
instacron:UNIFAP
instname_str Universidade Federal do Amapá (UNIFAP)
instacron_str UNIFAP
institution UNIFAP
reponame_str Biota Amazônia
collection Biota Amazônia
repository.name.fl_str_mv Biota Amazônia - Universidade Federal do Amapá (UNIFAP)
repository.mail.fl_str_mv ||juliosa@unifap.br
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