Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic

Autores
Scenna, Lorena Beatriz; Díaz de Astarloa, Juan Martín
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The knowledge of reproductive parameters is essential to develop effective management and conservation plans. The present study provides the first information on the reproductive biology of an abundant and important trawl by-catch skate, Bathyraja magellanica, along its geographic range in the south-western Atlantic (43-55°S). In total, 81 males (205-738mm total length, TL) and 104 females (157-768mm TL) were analysed. Length-frequency distributions were significantly different between sexes, with females being larger than males. However, no sexual dimorphism was observed in TL-total body weight relationship and liver size. Length at maturity was similar between males (638mm TL) and females (653mm TL), ∼85% of maximum observed size. The mean number of vitellogenic oocytes per skate was 14.37 (±4.43), increasing with female TL. Egg cases of B. magellanica had striated surface, broad lateral keels, extremely long posterior horns, and its wall consisted of three layers. An important area for the reproduction of B. magellanica was found between 48°50′S and 50°30′S. The present results indicated that this species has a low reproductive efficiency, suggesting that the B. magellanica population should be monitored closely to avoid large-scale changes in skate community structure of the south-western Atlantic.
Fil: Scenna, Lorena Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Díaz de Astarloa, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Materia
EGG CASES
EGG-LAYING AREA
ELASMOBRANCHS
MATURITY
PATAGONIAN SHELF
VITELLOGENIC OOCYTES
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:11336/100670
Acceder
id CONICETDig_089958d373ed0f82362c9a7269586c2f
oai_identifier_str oai:ri.conicet.gov.ar:11336/100670
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western AtlanticScenna, Lorena BeatrizDíaz de Astarloa, Juan MartínEGG CASESEGG-LAYING AREAELASMOBRANCHSMATURITYPATAGONIAN SHELFVITELLOGENIC OOCYTEShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The knowledge of reproductive parameters is essential to develop effective management and conservation plans. The present study provides the first information on the reproductive biology of an abundant and important trawl by-catch skate, Bathyraja magellanica, along its geographic range in the south-western Atlantic (43-55°S). In total, 81 males (205-738mm total length, TL) and 104 females (157-768mm TL) were analysed. Length-frequency distributions were significantly different between sexes, with females being larger than males. However, no sexual dimorphism was observed in TL-total body weight relationship and liver size. Length at maturity was similar between males (638mm TL) and females (653mm TL), ∼85% of maximum observed size. The mean number of vitellogenic oocytes per skate was 14.37 (±4.43), increasing with female TL. Egg cases of B. magellanica had striated surface, broad lateral keels, extremely long posterior horns, and its wall consisted of three layers. An important area for the reproduction of B. magellanica was found between 48°50′S and 50°30′S. The present results indicated that this species has a low reproductive efficiency, suggesting that the B. magellanica population should be monitored closely to avoid large-scale changes in skate community structure of the south-western Atlantic.Fil: Scenna, Lorena Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Díaz de Astarloa, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaCsiro Publishing2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100670Scenna, Lorena Beatriz; Díaz de Astarloa, Juan Martín; Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic; Csiro Publishing; Marine and Freshwater Research; 65; 9; 6-2014; 766-7751323-1650CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1071/MF13144info:eu-repo/semantics/altIdentifier/url/https://www.publish.csiro.au/mf/MF13144info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:40:37Zoai:ri.conicet.gov.ar:11336/100670instacron: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:34982025-10-15 15:40:37.659CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
title Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
spellingShingle Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
Scenna, Lorena Beatriz
EGG CASES
EGG-LAYING AREA
ELASMOBRANCHS
MATURITY
PATAGONIAN SHELF
VITELLOGENIC OOCYTES
title_short Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
title_full Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
title_fullStr Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
title_full_unstemmed Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
title_sort Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic
dc.creator.none.fl_str_mv Scenna, Lorena Beatriz
Díaz de Astarloa, Juan Martín
author Scenna, Lorena Beatriz
author_facet Scenna, Lorena Beatriz
Díaz de Astarloa, Juan Martín
author_role author
author2 Díaz de Astarloa, Juan Martín
author2_role author
dc.subject.none.fl_str_mv EGG CASES
EGG-LAYING AREA
ELASMOBRANCHS
MATURITY
PATAGONIAN SHELF
VITELLOGENIC OOCYTES
topic EGG CASES
EGG-LAYING AREA
ELASMOBRANCHS
MATURITY
PATAGONIAN SHELF
VITELLOGENIC OOCYTES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The knowledge of reproductive parameters is essential to develop effective management and conservation plans. The present study provides the first information on the reproductive biology of an abundant and important trawl by-catch skate, Bathyraja magellanica, along its geographic range in the south-western Atlantic (43-55°S). In total, 81 males (205-738mm total length, TL) and 104 females (157-768mm TL) were analysed. Length-frequency distributions were significantly different between sexes, with females being larger than males. However, no sexual dimorphism was observed in TL-total body weight relationship and liver size. Length at maturity was similar between males (638mm TL) and females (653mm TL), ∼85% of maximum observed size. The mean number of vitellogenic oocytes per skate was 14.37 (±4.43), increasing with female TL. Egg cases of B. magellanica had striated surface, broad lateral keels, extremely long posterior horns, and its wall consisted of three layers. An important area for the reproduction of B. magellanica was found between 48°50′S and 50°30′S. The present results indicated that this species has a low reproductive efficiency, suggesting that the B. magellanica population should be monitored closely to avoid large-scale changes in skate community structure of the south-western Atlantic.
Fil: Scenna, Lorena Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Díaz de Astarloa, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
description The knowledge of reproductive parameters is essential to develop effective management and conservation plans. The present study provides the first information on the reproductive biology of an abundant and important trawl by-catch skate, Bathyraja magellanica, along its geographic range in the south-western Atlantic (43-55°S). In total, 81 males (205-738mm total length, TL) and 104 females (157-768mm TL) were analysed. Length-frequency distributions were significantly different between sexes, with females being larger than males. However, no sexual dimorphism was observed in TL-total body weight relationship and liver size. Length at maturity was similar between males (638mm TL) and females (653mm TL), ∼85% of maximum observed size. The mean number of vitellogenic oocytes per skate was 14.37 (±4.43), increasing with female TL. Egg cases of B. magellanica had striated surface, broad lateral keels, extremely long posterior horns, and its wall consisted of three layers. An important area for the reproduction of B. magellanica was found between 48°50′S and 50°30′S. The present results indicated that this species has a low reproductive efficiency, suggesting that the B. magellanica population should be monitored closely to avoid large-scale changes in skate community structure of the south-western Atlantic.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
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/11336/100670
Scenna, Lorena Beatriz; Díaz de Astarloa, Juan Martín; Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic; Csiro Publishing; Marine and Freshwater Research; 65; 9; 6-2014; 766-775
1323-1650
CONICET Digital
CONICET
url http://hdl.handle.net/11336/100670
identifier_str_mv Scenna, Lorena Beatriz; Díaz de Astarloa, Juan Martín; Reproductive biology of the Magellan skate, Bathyraja magellanica (Chondrichthyes, Rajidae), in the south-western Atlantic; Csiro Publishing; Marine and Freshwater Research; 65; 9; 6-2014; 766-775
1323-1650
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1071/MF13144
info:eu-repo/semantics/altIdentifier/url/https://www.publish.csiro.au/mf/MF13144
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 Csiro Publishing
publisher.none.fl_str_mv Csiro Publishing
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
_version_ 1846083519559761920
score 13.22299

Publicaciones similares