Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem

Detalhes bibliográficos
Autor(a) principal: Martins, Agnaldo Silva
Data de Publicação: 2000
Outros Autores: Haimovici, Manuel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da FURG (RI FURG)
Texto Completo: http://repositorio.furg.br/handle/1/2170
Resumo: The reproduction of the cutlassfish Trichiurus lepturus was studied from samples collected in bottom trawl surveys on the continental shelf and shelf break off southern Brazil. The mean total length (LT) at first gonadal maturity was 63.9 cm for males and 69.3 cm for females. Batch fecundity ranged from 3,917 in a specimen of 70 cm LT to 154,216 in a specimen of 141 cm but the number of spawning batches in each season was not established. Spawning occurs in late spring and summer in the continental shelf and probably year round over the shelf break. High surface temperatures and moderate stratification of the water column were associated with the final stages of gonadal maturation. Seasonal and spatial differences in sex ratios, sizes, maturity stages and feeding intensities suggest that adult female T. lepturus remain during the cold season in the continental shelf of southern Brazil to feed, while adult males move to warmer waters northward or offshore.
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spelling Martins, Agnaldo SilvaHaimovici, Manuel2012-07-23T22:52:48Z2012-07-23T22:52:48Z2000MARTINS, Agnaldo Silva; HAIMOVICI, Manuel. Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem. Scientia Marina, v. 64, n. 1, p. 97-105, 2000. Disponível em: <http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/744/761>. Acesso em: 01 jul. 2012.http://repositorio.furg.br/handle/1/2170The reproduction of the cutlassfish Trichiurus lepturus was studied from samples collected in bottom trawl surveys on the continental shelf and shelf break off southern Brazil. The mean total length (LT) at first gonadal maturity was 63.9 cm for males and 69.3 cm for females. Batch fecundity ranged from 3,917 in a specimen of 70 cm LT to 154,216 in a specimen of 141 cm but the number of spawning batches in each season was not established. Spawning occurs in late spring and summer in the continental shelf and probably year round over the shelf break. High surface temperatures and moderate stratification of the water column were associated with the final stages of gonadal maturation. Seasonal and spatial differences in sex ratios, sizes, maturity stages and feeding intensities suggest that adult female T. lepturus remain during the cold season in the continental shelf of southern Brazil to feed, while adult males move to warmer waters northward or offshore.engBatch FecundityGonadal maturitySex ratiosSpawningTrichiurusReprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosysteminfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURGORIGINALReprodution of the cutlassfish Trichiurus lepturus in the southern brazil subtropical convergence ecosystem.pdfReprodution of the cutlassfish Trichiurus lepturus in the southern brazil subtropical convergence ecosystem.pdfapplication/pdf432518https://repositorio.furg.br/bitstream/1/2170/1/Reprodution%20of%20the%20cutlassfish%20Trichiurus%20lepturus%20in%20the%20southern%20brazil%20subtropical%20convergence%20ecosystem.pdf10051542ca8e1685c573aa5ab2713df1MD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-81678https://repositorio.furg.br/bitstream/1/2170/2/license.txtd3be63d3b3eee02729709361dac69efeMD52open access1/21702012-07-23 19:52:48.059open accessoai:repositorio.furg.br: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ório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2012-07-23T22:52:48Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false
dc.title.pt_BR.fl_str_mv Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
title Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
spellingShingle Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
Martins, Agnaldo Silva
Batch Fecundity
Gonadal maturity
Sex ratios
Spawning
Trichiurus
title_short Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
title_full Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
title_fullStr Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
title_full_unstemmed Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
title_sort Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem
author Martins, Agnaldo Silva
author_facet Martins, Agnaldo Silva
Haimovici, Manuel
author_role author
author2 Haimovici, Manuel
author2_role author
dc.contributor.author.fl_str_mv Martins, Agnaldo Silva
Haimovici, Manuel
dc.subject.por.fl_str_mv Batch Fecundity
Gonadal maturity
Sex ratios
Spawning
Trichiurus
topic Batch Fecundity
Gonadal maturity
Sex ratios
Spawning
Trichiurus
description The reproduction of the cutlassfish Trichiurus lepturus was studied from samples collected in bottom trawl surveys on the continental shelf and shelf break off southern Brazil. The mean total length (LT) at first gonadal maturity was 63.9 cm for males and 69.3 cm for females. Batch fecundity ranged from 3,917 in a specimen of 70 cm LT to 154,216 in a specimen of 141 cm but the number of spawning batches in each season was not established. Spawning occurs in late spring and summer in the continental shelf and probably year round over the shelf break. High surface temperatures and moderate stratification of the water column were associated with the final stages of gonadal maturation. Seasonal and spatial differences in sex ratios, sizes, maturity stages and feeding intensities suggest that adult female T. lepturus remain during the cold season in the continental shelf of southern Brazil to feed, while adult males move to warmer waters northward or offshore.
publishDate 2000
dc.date.issued.fl_str_mv 2000
dc.date.accessioned.fl_str_mv 2012-07-23T22:52:48Z
dc.date.available.fl_str_mv 2012-07-23T22:52:48Z
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.citation.fl_str_mv MARTINS, Agnaldo Silva; HAIMOVICI, Manuel. Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem. Scientia Marina, v. 64, n. 1, p. 97-105, 2000. Disponível em: <http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/744/761>. Acesso em: 01 jul. 2012.
dc.identifier.uri.fl_str_mv http://repositorio.furg.br/handle/1/2170
identifier_str_mv MARTINS, Agnaldo Silva; HAIMOVICI, Manuel. Reprodution of the cutlassfish Trichiurus lepturus in the southern Brazil subtropical convergence ecosystem. Scientia Marina, v. 64, n. 1, p. 97-105, 2000. Disponível em: <http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/744/761>. Acesso em: 01 jul. 2012.
url http://repositorio.furg.br/handle/1/2170
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.source.none.fl_str_mv reponame:Repositório Institucional da FURG (RI FURG)
instname:Universidade Federal do Rio Grande (FURG)
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reponame_str Repositório Institucional da FURG (RI FURG)
collection Repositório Institucional da FURG (RI FURG)
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