The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean

Detalhes bibliográficos
Autor(a) principal: Oddone, María Cristina [UNESP]
Data de Publicação: 2007
Outros Autores: Amorim, Alberto F., Mancini, Patricia L., Norbis, Walter, Velasco, Gonzalo [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3989/scimar.2007.71n3593
http://hdl.handle.net/11449/70098
Resumo: Specimens of Rioraja agassizi were collected at Guarujá pier, São Paulo State, Brazil, from March 2005 to March 2006. A total of 275 males were captured. Based on the analysis of the clasper length, gonad weight, clasper gland length, alar thorns and lobule diameter, the size-at-maturity was estimated to be 32 cm. There were 1049 females in the record. Size-at-maturity was calculated in 40 cm. Sexual resting females were observed. Gonadosomatic and hepatosomatic indexes varied significantly in both sexes throughout the year. However, ovulation, egg-laying and presence of sperm in the seminal vesicle were observed all year round. For this reason, an annual cycle with at least one peak in the sexual activity is proposed for this species.
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spelling The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic OceanClasperClasper glandEgg-bearingElasmobranchsGonadsNidamental glandVitellogenic folliclesfishgametereproductive biologyreproductive cyclesexual behaviorsexual reproductionsize at maturityAtlantic OceanBrazilSao Paulo [Brazil]South AmericaChondrichthyesElasmobranchiiRajidaeRiorajaSpecimens of Rioraja agassizi were collected at Guarujá pier, São Paulo State, Brazil, from March 2005 to March 2006. A total of 275 males were captured. Based on the analysis of the clasper length, gonad weight, clasper gland length, alar thorns and lobule diameter, the size-at-maturity was estimated to be 32 cm. There were 1049 females in the record. Size-at-maturity was calculated in 40 cm. Sexual resting females were observed. Gonadosomatic and hepatosomatic indexes varied significantly in both sexes throughout the year. However, ovulation, egg-laying and presence of sperm in the seminal vesicle were observed all year round. For this reason, an annual cycle with at least one peak in the sexual activity is proposed for this species.Universidade Estadual Paulista Departamento de Ecologia, Campus Rio Claro Av. 24-A 1515, 13506-900 Rio Claro, SPInstituto de Pesca, Av. Bartolomeu de Gusmão, 192, Ponta de Praia 11030-906 Santos, SPProjeto Albatroz, Av. Rei Alberto I, N. 450, sala 5, Ponta da Praia 11030-906 Santos, SPNacional de Recursos Acuáticos Departamento de Biología Pesquera, Constituyente 1497, Montevideo 11200Universidade Estadual Paulista Departamento de Ecologia, Campus Rio Claro Av. 24-A 1515, 13506-900 Rio Claro, SPUniversidade Estadual Paulista (Unesp)Instituto de PescaProjeto AlbatrozNacional de Recursos AcuáticosOddone, María Cristina [UNESP]Amorim, Alberto F.Mancini, Patricia L.Norbis, WalterVelasco, Gonzalo [UNESP]2014-05-27T11:22:42Z2014-05-27T11:22:42Z2007-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article593-604application/pdfhttp://dx.doi.org/10.3989/scimar.2007.71n3593Scientia Marina, v. 71, n. 3, p. 593-604, 2007.0214-8358http://hdl.handle.net/11449/7009810.3989/scimar.2007.71n35932-s2.0-353489060142-s2.0-35348906014.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScientia Marina1.1830,558info:eu-repo/semantics/openAccess2023-12-26T06:22:32Zoai:repositorio.unesp.br:11449/70098Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:23:25.531499Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
title The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
spellingShingle The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
Oddone, María Cristina [UNESP]
Clasper
Clasper gland
Egg-bearing
Elasmobranchs
Gonads
Nidamental gland
Vitellogenic follicles
fish
gamete
reproductive biology
reproductive cycle
sexual behavior
sexual reproduction
size at maturity
Atlantic Ocean
Brazil
Sao Paulo [Brazil]
South America
Chondrichthyes
Elasmobranchii
Rajidae
Rioraja
title_short The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
title_full The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
title_fullStr The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
title_full_unstemmed The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
title_sort The reproductive biology and cycle of Rioraja agassizi (Müller and Henle, 1841) (Chondrichthyes: Rajidae) in southeastern Brazil, SW Atlantic Ocean
author Oddone, María Cristina [UNESP]
author_facet Oddone, María Cristina [UNESP]
Amorim, Alberto F.
Mancini, Patricia L.
Norbis, Walter
Velasco, Gonzalo [UNESP]
author_role author
author2 Amorim, Alberto F.
Mancini, Patricia L.
Norbis, Walter
Velasco, Gonzalo [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Instituto de Pesca
Projeto Albatroz
Nacional de Recursos Acuáticos
dc.contributor.author.fl_str_mv Oddone, María Cristina [UNESP]
Amorim, Alberto F.
Mancini, Patricia L.
Norbis, Walter
Velasco, Gonzalo [UNESP]
dc.subject.por.fl_str_mv Clasper
Clasper gland
Egg-bearing
Elasmobranchs
Gonads
Nidamental gland
Vitellogenic follicles
fish
gamete
reproductive biology
reproductive cycle
sexual behavior
sexual reproduction
size at maturity
Atlantic Ocean
Brazil
Sao Paulo [Brazil]
South America
Chondrichthyes
Elasmobranchii
Rajidae
Rioraja
topic Clasper
Clasper gland
Egg-bearing
Elasmobranchs
Gonads
Nidamental gland
Vitellogenic follicles
fish
gamete
reproductive biology
reproductive cycle
sexual behavior
sexual reproduction
size at maturity
Atlantic Ocean
Brazil
Sao Paulo [Brazil]
South America
Chondrichthyes
Elasmobranchii
Rajidae
Rioraja
description Specimens of Rioraja agassizi were collected at Guarujá pier, São Paulo State, Brazil, from March 2005 to March 2006. A total of 275 males were captured. Based on the analysis of the clasper length, gonad weight, clasper gland length, alar thorns and lobule diameter, the size-at-maturity was estimated to be 32 cm. There were 1049 females in the record. Size-at-maturity was calculated in 40 cm. Sexual resting females were observed. Gonadosomatic and hepatosomatic indexes varied significantly in both sexes throughout the year. However, ovulation, egg-laying and presence of sperm in the seminal vesicle were observed all year round. For this reason, an annual cycle with at least one peak in the sexual activity is proposed for this species.
publishDate 2007
dc.date.none.fl_str_mv 2007-12-01
2014-05-27T11:22:42Z
2014-05-27T11:22:42Z
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 http://dx.doi.org/10.3989/scimar.2007.71n3593
Scientia Marina, v. 71, n. 3, p. 593-604, 2007.
0214-8358
http://hdl.handle.net/11449/70098
10.3989/scimar.2007.71n3593
2-s2.0-35348906014
2-s2.0-35348906014.pdf
url http://dx.doi.org/10.3989/scimar.2007.71n3593
http://hdl.handle.net/11449/70098
identifier_str_mv Scientia Marina, v. 71, n. 3, p. 593-604, 2007.
0214-8358
10.3989/scimar.2007.71n3593
2-s2.0-35348906014
2-s2.0-35348906014.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Scientia Marina
1.183
0,558
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 593-604
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129315799302144

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