Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean

Autores
Colonello, Jorge Horacio; Garcia, Mirta Lidia; Menni, Roberto Carlos
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This study provides the first detailed information on the reproductive biology of the lesser guitarfish Zapteryx brevirostris in the south‐western Atlantic Ocean between latitudes 34° and 42° S. A total of 320 males (196–647 mm total length, LT) and 336 females (200–640 mm LT) were analysed. No significant differences were observed in size at 50% maturity between males (499 mm LT) and females (506 mm LT). Three seasonal patterns were related to the testes mass, the development of spermatocysts and the presence of spermatozoa in genital ducts. Females showed a 3 year reproductive cycle, with 2 years of ovarian maturation and 1 year of gestation, including a mean annual fecundity of one to two embryos. Synchronicity of both ovulating females and males with sperm in genital ducts indicated that ovulation and hence mating occurs during winter. Birth was assumed to occur during winter, but neither ovulation nor mating is simultaneous with this reproductive event. Despite its low economic value, a decline in abundance in the region, together with a low reproductive efficiency, indicates that the Z. brevirostris population should be monitored closely.
Fil: Colonello, Jorge Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Garcia, Mirta Lidia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Menni, Roberto Carlos. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
ELASMOBRANCH
MATURITY
OVARY
REPRODUCTION
SEASONALITY
SPERMATOGENESIS
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:11336/95088
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/95088
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic OceanColonello, Jorge HoracioGarcia, Mirta LidiaMenni, Roberto CarlosELASMOBRANCHMATURITYOVARYREPRODUCTIONSEASONALITYSPERMATOGENESIShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1This study provides the first detailed information on the reproductive biology of the lesser guitarfish Zapteryx brevirostris in the south‐western Atlantic Ocean between latitudes 34° and 42° S. A total of 320 males (196–647 mm total length, LT) and 336 females (200–640 mm LT) were analysed. No significant differences were observed in size at 50% maturity between males (499 mm LT) and females (506 mm LT). Three seasonal patterns were related to the testes mass, the development of spermatocysts and the presence of spermatozoa in genital ducts. Females showed a 3 year reproductive cycle, with 2 years of ovarian maturation and 1 year of gestation, including a mean annual fecundity of one to two embryos. Synchronicity of both ovulating females and males with sperm in genital ducts indicated that ovulation and hence mating occurs during winter. Birth was assumed to occur during winter, but neither ovulation nor mating is simultaneous with this reproductive event. Despite its low economic value, a decline in abundance in the region, together with a low reproductive efficiency, indicates that the Z. brevirostris population should be monitored closely.Fil: Colonello, Jorge Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Garcia, Mirta Lidia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Menni, Roberto Carlos. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaWiley Blackwell Publishing, Inc2011-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95088Colonello, Jorge Horacio; Garcia, Mirta Lidia; Menni, Roberto Carlos; Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean; Wiley Blackwell Publishing, Inc; Journal of Fish Biology; 78; 1; 1-2011; 287-3020022-1112CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1095-8649.2010.02864.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8649.2010.02864.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:42:30Zoai:ri.conicet.gov.ar:11336/95088instacron: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 14:42:30.492CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
title Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
spellingShingle Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
Colonello, Jorge Horacio
ELASMOBRANCH
MATURITY
OVARY
REPRODUCTION
SEASONALITY
SPERMATOGENESIS
title_short Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
title_full Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
title_fullStr Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
title_full_unstemmed Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
title_sort Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean
dc.creator.none.fl_str_mv Colonello, Jorge Horacio
Garcia, Mirta Lidia
Menni, Roberto Carlos
author Colonello, Jorge Horacio
author_facet Colonello, Jorge Horacio
Garcia, Mirta Lidia
Menni, Roberto Carlos
author_role author
author2 Garcia, Mirta Lidia
Menni, Roberto Carlos
author2_role author
author
dc.subject.none.fl_str_mv ELASMOBRANCH
MATURITY
OVARY
REPRODUCTION
SEASONALITY
SPERMATOGENESIS
topic ELASMOBRANCH
MATURITY
OVARY
REPRODUCTION
SEASONALITY
SPERMATOGENESIS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This study provides the first detailed information on the reproductive biology of the lesser guitarfish Zapteryx brevirostris in the south‐western Atlantic Ocean between latitudes 34° and 42° S. A total of 320 males (196–647 mm total length, LT) and 336 females (200–640 mm LT) were analysed. No significant differences were observed in size at 50% maturity between males (499 mm LT) and females (506 mm LT). Three seasonal patterns were related to the testes mass, the development of spermatocysts and the presence of spermatozoa in genital ducts. Females showed a 3 year reproductive cycle, with 2 years of ovarian maturation and 1 year of gestation, including a mean annual fecundity of one to two embryos. Synchronicity of both ovulating females and males with sperm in genital ducts indicated that ovulation and hence mating occurs during winter. Birth was assumed to occur during winter, but neither ovulation nor mating is simultaneous with this reproductive event. Despite its low economic value, a decline in abundance in the region, together with a low reproductive efficiency, indicates that the Z. brevirostris population should be monitored closely.
Fil: Colonello, Jorge Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Garcia, Mirta Lidia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Menni, Roberto Carlos. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description This study provides the first detailed information on the reproductive biology of the lesser guitarfish Zapteryx brevirostris in the south‐western Atlantic Ocean between latitudes 34° and 42° S. A total of 320 males (196–647 mm total length, LT) and 336 females (200–640 mm LT) were analysed. No significant differences were observed in size at 50% maturity between males (499 mm LT) and females (506 mm LT). Three seasonal patterns were related to the testes mass, the development of spermatocysts and the presence of spermatozoa in genital ducts. Females showed a 3 year reproductive cycle, with 2 years of ovarian maturation and 1 year of gestation, including a mean annual fecundity of one to two embryos. Synchronicity of both ovulating females and males with sperm in genital ducts indicated that ovulation and hence mating occurs during winter. Birth was assumed to occur during winter, but neither ovulation nor mating is simultaneous with this reproductive event. Despite its low economic value, a decline in abundance in the region, together with a low reproductive efficiency, indicates that the Z. brevirostris population should be monitored closely.
publishDate 2011
dc.date.none.fl_str_mv 2011-01
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/11336/95088
Colonello, Jorge Horacio; Garcia, Mirta Lidia; Menni, Roberto Carlos; Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean; Wiley Blackwell Publishing, Inc; Journal of Fish Biology; 78; 1; 1-2011; 287-302
0022-1112
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95088
identifier_str_mv Colonello, Jorge Horacio; Garcia, Mirta Lidia; Menni, Roberto Carlos; Reproductive biology of the lesser guitarfish Zapteryx brevirostris from the south‐western Atlantic Ocean; Wiley Blackwell Publishing, Inc; Journal of Fish Biology; 78; 1; 1-2011; 287-302
0022-1112
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1095-8649.2010.02864.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8649.2010.02864.x
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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_ 1846082926573256704
score 13.22299

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