Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations

Autores
Pardo, Luis Miguel; Fuentes, Juan Pablo; Olguín, Andrés; Orensanz, Jose Maria
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Size-at-maturity, often used by fisheries managers to specify reference points, was estimated for Cancer edwardsii, the most intensely exploited brachyuran crab in Chile, using morphometric data and observation of the gonadal cycle. Sampling was conducted in Chiloé Island, the principal landing region. Several morphometric measurements of secondary sexual characters were recorded for both sexes. Their size-dependence was investigated in search of ontogenetic allometric changes. Six stages of maturity were established for females, and four for males, on the basis of macroscopic and histological observation of the reproductive system, allowing distinction between adults and juveniles. Females and males, on average, attained full development of secondary sexual characters at 106 and 118mm carapace width (CW) respectively. The CW at which 50% of females and males have gonads of adult appearance was around 101mm. Current minimum legal size is 120mm CW, seemingly high enough for conservation purposes. This management control, however, is unlikely to provide effective protection due to the high proportion of crab of sub-legal size in the landings. Traps with escape vents could be introduced in this fishery in order to ensure its sustainability.
Fil: Pardo, Luis Miguel. Universidad Austral de Chile; Chile
Fil: Fuentes, Juan Pablo. Universidad Austral de Chile; Chile
Fil: Olguín, Andrés. Instituto de Fomento Pesquero; Chile
Fil: Orensanz, Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Materia
ALLOMETRY
CHILE
CRAB FISHERY
GONADAL DEVELOPMENT
KEYWORDSCANCER EDWARDSII
LEGAL SIZE
SIZE AT MATURITY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/95941
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/95941
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerationsPardo, Luis MiguelFuentes, Juan PabloOlguín, AndrésOrensanz, Jose MariaALLOMETRYCHILECRAB FISHERYGONADAL DEVELOPMENTKEYWORDSCANCER EDWARDSIILEGAL SIZESIZE AT MATURITYhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Size-at-maturity, often used by fisheries managers to specify reference points, was estimated for Cancer edwardsii, the most intensely exploited brachyuran crab in Chile, using morphometric data and observation of the gonadal cycle. Sampling was conducted in Chiloé Island, the principal landing region. Several morphometric measurements of secondary sexual characters were recorded for both sexes. Their size-dependence was investigated in search of ontogenetic allometric changes. Six stages of maturity were established for females, and four for males, on the basis of macroscopic and histological observation of the reproductive system, allowing distinction between adults and juveniles. Females and males, on average, attained full development of secondary sexual characters at 106 and 118mm carapace width (CW) respectively. The CW at which 50% of females and males have gonads of adult appearance was around 101mm. Current minimum legal size is 120mm CW, seemingly high enough for conservation purposes. This management control, however, is unlikely to provide effective protection due to the high proportion of crab of sub-legal size in the landings. Traps with escape vents could be introduced in this fishery in order to ensure its sustainability.Fil: Pardo, Luis Miguel. Universidad Austral de Chile; ChileFil: Fuentes, Juan Pablo. Universidad Austral de Chile; ChileFil: Olguín, Andrés. Instituto de Fomento Pesquero; ChileFil: Orensanz, Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaCambridge University Press2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95941Pardo, Luis Miguel; Fuentes, Juan Pablo; Olguín, Andrés; Orensanz, Jose Maria; Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 89; 8; 12-2009; 1627-16340025-3154CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315409000010info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/reproductive-maturity-in-the-edible-chilean-crab-cancer-edwardsii-methodological-and-management-considerations/64FD87FEAAC15B1741FF05CB0BE81F34info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:13:09Zoai:ri.conicet.gov.ar:11336/95941instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:13:10.239CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
title Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
spellingShingle Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
Pardo, Luis Miguel
ALLOMETRY
CHILE
CRAB FISHERY
GONADAL DEVELOPMENT
KEYWORDSCANCER EDWARDSII
LEGAL SIZE
SIZE AT MATURITY
title_short Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
title_full Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
title_fullStr Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
title_full_unstemmed Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
title_sort Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations
dc.creator.none.fl_str_mv Pardo, Luis Miguel
Fuentes, Juan Pablo
Olguín, Andrés
Orensanz, Jose Maria
author Pardo, Luis Miguel
author_facet Pardo, Luis Miguel
Fuentes, Juan Pablo
Olguín, Andrés
Orensanz, Jose Maria
author_role author
author2 Fuentes, Juan Pablo
Olguín, Andrés
Orensanz, Jose Maria
author2_role author
author
author
dc.subject.none.fl_str_mv ALLOMETRY
CHILE
CRAB FISHERY
GONADAL DEVELOPMENT
KEYWORDSCANCER EDWARDSII
LEGAL SIZE
SIZE AT MATURITY
topic ALLOMETRY
CHILE
CRAB FISHERY
GONADAL DEVELOPMENT
KEYWORDSCANCER EDWARDSII
LEGAL SIZE
SIZE AT MATURITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Size-at-maturity, often used by fisheries managers to specify reference points, was estimated for Cancer edwardsii, the most intensely exploited brachyuran crab in Chile, using morphometric data and observation of the gonadal cycle. Sampling was conducted in Chiloé Island, the principal landing region. Several morphometric measurements of secondary sexual characters were recorded for both sexes. Their size-dependence was investigated in search of ontogenetic allometric changes. Six stages of maturity were established for females, and four for males, on the basis of macroscopic and histological observation of the reproductive system, allowing distinction between adults and juveniles. Females and males, on average, attained full development of secondary sexual characters at 106 and 118mm carapace width (CW) respectively. The CW at which 50% of females and males have gonads of adult appearance was around 101mm. Current minimum legal size is 120mm CW, seemingly high enough for conservation purposes. This management control, however, is unlikely to provide effective protection due to the high proportion of crab of sub-legal size in the landings. Traps with escape vents could be introduced in this fishery in order to ensure its sustainability.
Fil: Pardo, Luis Miguel. Universidad Austral de Chile; Chile
Fil: Fuentes, Juan Pablo. Universidad Austral de Chile; Chile
Fil: Olguín, Andrés. Instituto de Fomento Pesquero; Chile
Fil: Orensanz, Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
description Size-at-maturity, often used by fisheries managers to specify reference points, was estimated for Cancer edwardsii, the most intensely exploited brachyuran crab in Chile, using morphometric data and observation of the gonadal cycle. Sampling was conducted in Chiloé Island, the principal landing region. Several morphometric measurements of secondary sexual characters were recorded for both sexes. Their size-dependence was investigated in search of ontogenetic allometric changes. Six stages of maturity were established for females, and four for males, on the basis of macroscopic and histological observation of the reproductive system, allowing distinction between adults and juveniles. Females and males, on average, attained full development of secondary sexual characters at 106 and 118mm carapace width (CW) respectively. The CW at which 50% of females and males have gonads of adult appearance was around 101mm. Current minimum legal size is 120mm CW, seemingly high enough for conservation purposes. This management control, however, is unlikely to provide effective protection due to the high proportion of crab of sub-legal size in the landings. Traps with escape vents could be introduced in this fishery in order to ensure its sustainability.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/95941
Pardo, Luis Miguel; Fuentes, Juan Pablo; Olguín, Andrés; Orensanz, Jose Maria; Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 89; 8; 12-2009; 1627-1634
0025-3154
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95941
identifier_str_mv Pardo, Luis Miguel; Fuentes, Juan Pablo; Olguín, Andrés; Orensanz, Jose Maria; Reproductive maturity in the edible Chilean crab Cancer edwardsii: Methodological and management considerations; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 89; 8; 12-2009; 1627-1634
0025-3154
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315409000010
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/reproductive-maturity-in-the-edible-chilean-crab-cancer-edwardsii-methodological-and-management-considerations/64FD87FEAAC15B1741FF05CB0BE81F34
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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