REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL

Detalhes bibliográficos
Autor(a) principal: Carvalho, Marcelo Moreira
Data de Publicação: 2021
Outros Autores: Oliveira, Mônica Rocha de, Barreto de Lima, Louise Thuane, Nóbrega, Marcelo Francisco, Wanderley, Bruno Mattos Silva, Lins Oliveira, Jorge Eduardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Biota Amazônia
Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/5758
Resumo: This study aimed to verify reproductive aspects of Rhizoprionodon porosus (Poey, 1861) captured by small-scale fisheries on coastal waters from Northeastern of Brazil. Samples were obtained during the dry and rainy seasons between 2015 and 2016. Specimens were sexed, measured (cm ± sd), weighted (g ± sd), eviscerated and had their maturity stages verified. A total of 169 (103 male and 66 females) was sampled between 4 and 30 m depth. It was confirmed three maturity stages: neonate (37.95 ± 3.59 cm Total Length (Lt); 230.02 ± 72.90g Eviscerated Weight (We), juvenile (47.10 ± 2.91 cm Lt; 436.7 ± 79.60g We), and adults (69.15 ±12.29 cm Lt; 1556.08 ± 831.40g We). Males were predominant over females along the year. The negative allometric coefficient for adults suggests an adaptation strategy to reach larger sizes faster, avoiding predation. The size for first sexual maturation was estimated in 57.5 cm Lt. However, over 60% of total samplings corresponded to neonates. The period of reproduction seems to occur continuously with females migrating to shallow waters during the dry season to give birth. The abundance of neonates and some females at late maturity stages indicate fisheries are operating within nursery areas, which might affect recruits in the stock.Keywords: coastal shark migration; size at first maturity; nursery areas.
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spelling REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZILASPECTOS REPRODUTIVOS DO TUBARÃO ‘CAÇÃO-FRANGO’ Rhizoprionoson porosus DA COSTA DO NORDESTE DO BRASILcoastal shark migration; size at first maturity; nursery areascoastal shark migration; size at first maturity; nursery areasThis study aimed to verify reproductive aspects of Rhizoprionodon porosus (Poey, 1861) captured by small-scale fisheries on coastal waters from Northeastern of Brazil. Samples were obtained during the dry and rainy seasons between 2015 and 2016. Specimens were sexed, measured (cm ± sd), weighted (g ± sd), eviscerated and had their maturity stages verified. A total of 169 (103 male and 66 females) was sampled between 4 and 30 m depth. It was confirmed three maturity stages: neonate (37.95 ± 3.59 cm Total Length (Lt); 230.02 ± 72.90g Eviscerated Weight (We), juvenile (47.10 ± 2.91 cm Lt; 436.7 ± 79.60g We), and adults (69.15 ±12.29 cm Lt; 1556.08 ± 831.40g We). Males were predominant over females along the year. The negative allometric coefficient for adults suggests an adaptation strategy to reach larger sizes faster, avoiding predation. The size for first sexual maturation was estimated in 57.5 cm Lt. However, over 60% of total samplings corresponded to neonates. The period of reproduction seems to occur continuously with females migrating to shallow waters during the dry season to give birth. The abundance of neonates and some females at late maturity stages indicate fisheries are operating within nursery areas, which might affect recruits in the stock.Keywords: coastal shark migration; size at first maturity; nursery areas.Este estudo teve como objetivo verificar aspectos reprodutivos de Rhizoprionodon porosus (Poey, 1861) capturados em pescarias de pequena escala em águas costeiras do Nordeste do Brasil. As amostras foram obtidas durante as estações seca e chuvosa entre 2015 e 2016. As amostras foram sexadas, medidas (cm ± d.p.), pesadas (g ± d.p.), evisceradas e tiveram seus estágios de maturação verificados. Foram amostrados 169 (103 machos e 66 fêmeas) entre 4 e 30 m de profundidade. Foram confirmados três estádios de maturação: neonatos (37,95 ± 3,59 cm comprimento total (Lt); 230,02 ± 72,90g peso eviscerado (We), juvenis (47,10 ± 2,91 cm Lt; 436,7 ± 79,60g We) e adultos (69,15 ± 12,29 cm Lt; 1556,08 ± 831,40g We). O coeficiente alométrico negativo para adultos sugere uma estratégia de adaptação para atingir tamanhos maiores mais rapidamente, evitando a predação. O tamanho para a primeira maturação sexual foi estimado em 57,5 cm. No entanto, mais de 60% do total de amostras correspondeu a neonatos. O período de reprodução parece ocorrer continuamente com as fêmeas migrando para águas rasas para dar à luz durante a estação seca. A abundância de neonatos e algumas fêmeas nos estágios tardios da maturidade indica que a pesca está ocorrendo em áreas de berçário, o que pode afetar o recrutamento de novos indivíduos no estoque populacional.Palavras-chave: migração tubarão costeiro, tamanho de maturação sexual, áreas de berçário.Universidade Federal do AmapáCAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorCAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorCarvalho, Marcelo MoreiraOliveira, Mônica Rocha deBarreto de Lima, Louise ThuaneNóbrega, Marcelo FranciscoWanderley, Bruno Mattos SilvaLins Oliveira, Jorge Eduardo2021-12-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArtigo Avaliado pelos Paresapplication/pdfhttps://periodicos.unifap.br/index.php/biota/article/view/575810.18561/2179-5746/biotaamazonia.v11n3p5-8Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota); v. 11, n. 3 (2021); 5-82179-5746reponame:Biota Amazôniainstname:Universidade Federal do Amapá (UNIFAP)instacron:UNIFAPenghttps://periodicos.unifap.br/index.php/biota/article/view/5758/v11n3p5-8.pdfLatin America; Brazil2014;2015;2016field sampling; fish sampling;Brasil; América do Sul2010;2011;2012;2013;2014;2015Capturas de peixes costeirosDireitos autorais 2021 Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota)http://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess2021-12-31T20:25:25Zoai:ojs.pkp.sfu.ca:article/5758Revistahttp://periodicos.unifap.br/index.php/biotaONGhttps://periodicos.unifap.br/index.php/biota/oai||juliosa@unifap.br2179-57462179-5746opendoar:2021-12-31T20:25:25Biota Amazônia - Universidade Federal do Amapá (UNIFAP)false
dc.title.none.fl_str_mv REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
ASPECTOS REPRODUTIVOS DO TUBARÃO ‘CAÇÃO-FRANGO’ Rhizoprionoson porosus DA COSTA DO NORDESTE DO BRASIL
title REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
spellingShingle REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
Carvalho, Marcelo Moreira
coastal shark migration; size at first maturity; nursery areas
coastal shark migration; size at first maturity; nursery areas
title_short REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
title_full REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
title_fullStr REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
title_full_unstemmed REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
title_sort REPRODUCTIVE ASPECTS OF CARIBBEAN SHARPNOSE SHARK Rhizoprionodon porosus FROM NORTHEASTERN COAST OF BRAZIL
author Carvalho, Marcelo Moreira
author_facet Carvalho, Marcelo Moreira
Oliveira, Mônica Rocha de
Barreto de Lima, Louise Thuane
Nóbrega, Marcelo Francisco
Wanderley, Bruno Mattos Silva
Lins Oliveira, Jorge Eduardo
author_role author
author2 Oliveira, Mônica Rocha de
Barreto de Lima, Louise Thuane
Nóbrega, Marcelo Francisco
Wanderley, Bruno Mattos Silva
Lins Oliveira, Jorge Eduardo
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv CAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
CAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.contributor.author.fl_str_mv Carvalho, Marcelo Moreira
Oliveira, Mônica Rocha de
Barreto de Lima, Louise Thuane
Nóbrega, Marcelo Francisco
Wanderley, Bruno Mattos Silva
Lins Oliveira, Jorge Eduardo
dc.subject.por.fl_str_mv coastal shark migration; size at first maturity; nursery areas
coastal shark migration; size at first maturity; nursery areas
topic coastal shark migration; size at first maturity; nursery areas
coastal shark migration; size at first maturity; nursery areas
description This study aimed to verify reproductive aspects of Rhizoprionodon porosus (Poey, 1861) captured by small-scale fisheries on coastal waters from Northeastern of Brazil. Samples were obtained during the dry and rainy seasons between 2015 and 2016. Specimens were sexed, measured (cm ± sd), weighted (g ± sd), eviscerated and had their maturity stages verified. A total of 169 (103 male and 66 females) was sampled between 4 and 30 m depth. It was confirmed three maturity stages: neonate (37.95 ± 3.59 cm Total Length (Lt); 230.02 ± 72.90g Eviscerated Weight (We), juvenile (47.10 ± 2.91 cm Lt; 436.7 ± 79.60g We), and adults (69.15 ±12.29 cm Lt; 1556.08 ± 831.40g We). Males were predominant over females along the year. The negative allometric coefficient for adults suggests an adaptation strategy to reach larger sizes faster, avoiding predation. The size for first sexual maturation was estimated in 57.5 cm Lt. However, over 60% of total samplings corresponded to neonates. The period of reproduction seems to occur continuously with females migrating to shallow waters during the dry season to give birth. The abundance of neonates and some females at late maturity stages indicate fisheries are operating within nursery areas, which might affect recruits in the stock.Keywords: coastal shark migration; size at first maturity; nursery areas.
publishDate 2021
dc.date.none.fl_str_mv 2021-12-31
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/5758
10.18561/2179-5746/biotaamazonia.v11n3p5-8
url https://periodicos.unifap.br/index.php/biota/article/view/5758
identifier_str_mv 10.18561/2179-5746/biotaamazonia.v11n3p5-8
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.unifap.br/index.php/biota/article/view/5758/v11n3p5-8.pdf
dc.rights.driver.fl_str_mv Direitos autorais 2021 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 2021 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 Latin America; Brazil
2014;2015;2016
field sampling; fish sampling;
Brasil; América do Sul
2010;2011;2012;2013;2014;2015
Capturas de peixes costeiros
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. 11, n. 3 (2021); 5-8
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
_version_ 1800218372146724864

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