Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina

Autores
Negri, Maria Fernanda; Panebianco, María Victoria; Denuncio, Pablo Ezequiel; Paso Viola, María Natalia; Rodriguez, Diego; Cappozzo, Humberto Luis
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The franciscana dolphin (Pontoporia blainvillei) is a small coastal dolphin endemic to the south-western Atlantic ocean. Incidental captures in fishing gillnets is possibly the greatest conservation concern for this species, and occurs within most of its geographical distribution. The aim of this paper is to determine the biological parameters of franciscana dolphin bycaught from artisanal coastal fisheries of the southern Buenos Aires province, Argentina. Between 2003 and 2009, carcasses of 54 incidentally captured franciscanas were collected. The age, sexual and physical maturity and body condition of each specimen was determined. The sex ratio of the bycaught dolphins did not differ from parity and, consistent with other areas, juveniles younger than 4 yr old were captured in higher proportion (69%). In addition, 74% of the entangled animals were sexually immature and 85% physically immature. Sexually immature dolphins were predominant in the spring, a period which coincides with the breeding season. An assessment of the body condition of captured franciscanas suggests that entanglements were not associated with a disease or physiological disorder. The results presented here are important to assess the impact of artisanal fisheries on the population of franciscana dolphins in the southernmost area of its distribution.
Fil: Negri, Maria Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Panebianco, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Denuncio, Pablo Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Paso Viola, María Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Rodriguez, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Materia
Franciscana Dolphin
Biologycal Parameters
Sexual Maturity
Argentina
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:11336/7576
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/7576
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, ArgentinaNegri, Maria FernandaPanebianco, María VictoriaDenuncio, Pablo EzequielPaso Viola, María NataliaRodriguez, DiegoCappozzo, Humberto LuisFranciscana DolphinBiologycal ParametersSexual MaturityArgentinahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The franciscana dolphin (Pontoporia blainvillei) is a small coastal dolphin endemic to the south-western Atlantic ocean. Incidental captures in fishing gillnets is possibly the greatest conservation concern for this species, and occurs within most of its geographical distribution. The aim of this paper is to determine the biological parameters of franciscana dolphin bycaught from artisanal coastal fisheries of the southern Buenos Aires province, Argentina. Between 2003 and 2009, carcasses of 54 incidentally captured franciscanas were collected. The age, sexual and physical maturity and body condition of each specimen was determined. The sex ratio of the bycaught dolphins did not differ from parity and, consistent with other areas, juveniles younger than 4 yr old were captured in higher proportion (69%). In addition, 74% of the entangled animals were sexually immature and 85% physically immature. Sexually immature dolphins were predominant in the spring, a period which coincides with the breeding season. An assessment of the body condition of captured franciscanas suggests that entanglements were not associated with a disease or physiological disorder. The results presented here are important to assess the impact of artisanal fisheries on the population of franciscana dolphins in the southernmost area of its distribution.Fil: Negri, Maria Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Panebianco, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaFil: Denuncio, Pablo Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Paso Viola, María Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaFil: Rodriguez, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaCambridge University Press2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/vnd.rarapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/7576Negri, Maria Fernanda; Panebianco, María Victoria; Denuncio, Pablo Ezequiel; Paso Viola, María Natalia; Rodriguez, Diego; et al.; Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina; Cambridge University Press; Journal Of The Marine Biological Association Of The United Kingdom; 96; 4; 4-2014; 821-8290025-3154enginfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/biological-parameters-of-franciscana-dolphins-pontoporia-blainvillei-by-caught-in-artisanal-fisheries-off-southern-buenos-aires-argentina/FB292E5868796060B4F4EF456568943Cinfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315414000393info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:41Zoai:ri.conicet.gov.ar:11336/7576instacron: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:34982025-09-03 10:03:41.908CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
title Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
spellingShingle Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
Negri, Maria Fernanda
Franciscana Dolphin
Biologycal Parameters
Sexual Maturity
Argentina
title_short Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
title_full Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
title_fullStr Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
title_full_unstemmed Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
title_sort Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina
dc.creator.none.fl_str_mv Negri, Maria Fernanda
Panebianco, María Victoria
Denuncio, Pablo Ezequiel
Paso Viola, María Natalia
Rodriguez, Diego
Cappozzo, Humberto Luis
author Negri, Maria Fernanda
author_facet Negri, Maria Fernanda
Panebianco, María Victoria
Denuncio, Pablo Ezequiel
Paso Viola, María Natalia
Rodriguez, Diego
Cappozzo, Humberto Luis
author_role author
author2 Panebianco, María Victoria
Denuncio, Pablo Ezequiel
Paso Viola, María Natalia
Rodriguez, Diego
Cappozzo, Humberto Luis
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Franciscana Dolphin
Biologycal Parameters
Sexual Maturity
Argentina
topic Franciscana Dolphin
Biologycal Parameters
Sexual Maturity
Argentina
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 franciscana dolphin (Pontoporia blainvillei) is a small coastal dolphin endemic to the south-western Atlantic ocean. Incidental captures in fishing gillnets is possibly the greatest conservation concern for this species, and occurs within most of its geographical distribution. The aim of this paper is to determine the biological parameters of franciscana dolphin bycaught from artisanal coastal fisheries of the southern Buenos Aires province, Argentina. Between 2003 and 2009, carcasses of 54 incidentally captured franciscanas were collected. The age, sexual and physical maturity and body condition of each specimen was determined. The sex ratio of the bycaught dolphins did not differ from parity and, consistent with other areas, juveniles younger than 4 yr old were captured in higher proportion (69%). In addition, 74% of the entangled animals were sexually immature and 85% physically immature. Sexually immature dolphins were predominant in the spring, a period which coincides with the breeding season. An assessment of the body condition of captured franciscanas suggests that entanglements were not associated with a disease or physiological disorder. The results presented here are important to assess the impact of artisanal fisheries on the population of franciscana dolphins in the southernmost area of its distribution.
Fil: Negri, Maria Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Panebianco, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Denuncio, Pablo Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Paso Viola, María Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Rodriguez, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
description The franciscana dolphin (Pontoporia blainvillei) is a small coastal dolphin endemic to the south-western Atlantic ocean. Incidental captures in fishing gillnets is possibly the greatest conservation concern for this species, and occurs within most of its geographical distribution. The aim of this paper is to determine the biological parameters of franciscana dolphin bycaught from artisanal coastal fisheries of the southern Buenos Aires province, Argentina. Between 2003 and 2009, carcasses of 54 incidentally captured franciscanas were collected. The age, sexual and physical maturity and body condition of each specimen was determined. The sex ratio of the bycaught dolphins did not differ from parity and, consistent with other areas, juveniles younger than 4 yr old were captured in higher proportion (69%). In addition, 74% of the entangled animals were sexually immature and 85% physically immature. Sexually immature dolphins were predominant in the spring, a period which coincides with the breeding season. An assessment of the body condition of captured franciscanas suggests that entanglements were not associated with a disease or physiological disorder. The results presented here are important to assess the impact of artisanal fisheries on the population of franciscana dolphins in the southernmost area of its distribution.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
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/11336/7576
Negri, Maria Fernanda; Panebianco, María Victoria; Denuncio, Pablo Ezequiel; Paso Viola, María Natalia; Rodriguez, Diego; et al.; Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina; Cambridge University Press; Journal Of The Marine Biological Association Of The United Kingdom; 96; 4; 4-2014; 821-829
0025-3154
url http://hdl.handle.net/11336/7576
identifier_str_mv Negri, Maria Fernanda; Panebianco, María Victoria; Denuncio, Pablo Ezequiel; Paso Viola, María Natalia; Rodriguez, Diego; et al.; Biological parameters of franciscana dolphins, Pontoporia blainvillei, bycaught in artisanal fisheries off southern Buenos Aires, Argentina; Cambridge University Press; Journal Of The Marine Biological Association Of The United Kingdom; 96; 4; 4-2014; 821-829
0025-3154
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/biological-parameters-of-franciscana-dolphins-pontoporia-blainvillei-by-caught-in-artisanal-fisheries-off-southern-buenos-aires-argentina/FB292E5868796060B4F4EF456568943C
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315414000393
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/vnd.rar
application/pdf
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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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