Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia

 Opportunistic sampling suggested a complex population structure for Squalus megalops in southeastern Australia. A total of 929 sharks were analyzed. The sex ratio was biased towards females and there was sexual size dimorphism, with females attaining a larger maximum size than males. Indiv...

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Detalles Bibliográficos
Autores: Braccini, JM, Gillanders, BM, Walker, TI
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2006
País:México
Institución:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
Repositorio:Ciencias Marinas
Idioma:inglés
OAI Identifier:oai:cienciasmarinas.com.mx:article/1157
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1157
Access Level:acceso abierto
Palabra clave:Squalus megalops
estructura poblacional
dimorfismo en talla
population structure
size dimorphism
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spelling Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern AustraliaNotas sobre la estructura poblacional del tiburón Squalus megalops en el sureste de AustraliaBraccini, JMGillanders, BMWalker, TISqualus megalopsestructura poblacionaldimorfismo en tallaSqualus megalopspopulation structuresize dimorphism Opportunistic sampling suggested a complex population structure for Squalus megalops in southeastern Australia. A total of 929 sharks were analyzed. The sex ratio was biased towards females and there was sexual size dimorphism, with females attaining a larger maximum size than males. Individual analysis of selected fishing shots suggested that S. megalops had a complex population structure, and was segregated by sex, size and breeding condition. Small females and males segregated from large females. In addition, large females in the first year of pregnancy seemed to be separated from those in the second year of pregnancy.Un muestreo oportunista reveló una estructura poblacional compleja para Squalus megalops en el sureste de Australia. Se analizaron un total de 929 tiburones. La razón de sexos estuvo sesgada hacia las hembras y se observó dimorfismo sexual en la talla, alcanzando las hembras una mayor talla máxima que los machos. El análisis individual de algunos lances de pesca mostró que S. megalops tiene una estructura poblacional compleja y que presenta segregación por sexo, talla y condición reproductiva. Las hembras y los machos de talla pequeña se segregaron de las hembras grandes, y las hembras en su primer año de preñez parecieran separarse de las que estaban en su segundo año de preñez.Iniversidad Autónoma de Baja California2006-11-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed research noteNota de investigación arbitradaapplication/pdfhttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/115710.7773/cm.v32i4.1157Ciencias Marinas; Vol. 32 No. 4 (2006); 705-712Ciencias Marinas; Vol. 32 Núm. 4 (2006); 705-7122395-90530185-3880reponame:Ciencias Marinasinstname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIAinstacron:UABCenghttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1157/989info:eu-repo/semantics/openAccessoai:cienciasmarinas.com.mx:article/11572024-08-22T17:01:38Z
dc.title.none.fl_str_mv Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
Notas sobre la estructura poblacional del tiburón Squalus megalops en el sureste de Australia
title Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
spellingShingle Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
Braccini, JM
Squalus megalops
estructura poblacional
dimorfismo en talla
Squalus megalops
population structure
size dimorphism
title_short Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
title_full Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
title_fullStr Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
title_full_unstemmed Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
title_sort Notes on the population structure of the piked spurdog (Squalus megalops) in southeastern Australia
dc.creator.none.fl_str_mv Braccini, JM
Gillanders, BM
Walker, TI
author Braccini, JM
author_facet Braccini, JM
Gillanders, BM
Walker, TI
author_role author
author2 Gillanders, BM
Walker, TI
author2_role author
author
dc.subject.none.fl_str_mv Squalus megalops
estructura poblacional
dimorfismo en talla
Squalus megalops
population structure
size dimorphism
topic Squalus megalops
estructura poblacional
dimorfismo en talla
Squalus megalops
population structure
size dimorphism
description  Opportunistic sampling suggested a complex population structure for Squalus megalops in southeastern Australia. A total of 929 sharks were analyzed. The sex ratio was biased towards females and there was sexual size dimorphism, with females attaining a larger maximum size than males. Individual analysis of selected fishing shots suggested that S. megalops had a complex population structure, and was segregated by sex, size and breeding condition. Small females and males segregated from large females. In addition, large females in the first year of pregnancy seemed to be separated from those in the second year of pregnancy.
publishDate 2006
dc.date.none.fl_str_mv 2006-11-16
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed research note
Nota de investigación arbitrada
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1157
10.7773/cm.v32i4.1157
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1157
identifier_str_mv 10.7773/cm.v32i4.1157
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1157/989
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Iniversidad Autónoma de Baja California
publisher.none.fl_str_mv Iniversidad Autónoma de Baja California
dc.source.none.fl_str_mv Ciencias Marinas; Vol. 32 No. 4 (2006); 705-712
Ciencias Marinas; Vol. 32 Núm. 4 (2006); 705-712
2395-9053
0185-3880
reponame:Ciencias Marinas
instname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
instacron:UABC
instname_str UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
instacron_str UABC
institution UABC
reponame_str Ciencias Marinas
collection Ciencias Marinas
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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