Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina
- Autores
- Righi, Carina F.; Blanco, Gabriela Silvina; Frere, Esteban
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Abundance and spatial distribution of the Commerson’s dolphin (Cephalorhynchus commersonii) during spring and summer 2002-2004 and fall/winter 2003 were estimated in the estuary Ría Deseado, Patagonia, Argentina. To estimate the abundance, photo-identification and mark-recapture (positive method) were combined. Distribution of dolphins within the estuary was studied, and their locations were recorded using a GPS to perform a Kernel Density Analysis. Adult abundance was higher during spring (34 and 35 individuals in 2002 and 2003, respectively) and decreased during fall (7 individuals) and winter (16 individuals). Sightings of 132 adults during winter, spring, and summer (n = 12, n = 76, and n = 44, respectively) and 14 calves during spring and summer (n = 4 and n = 10, respectively) were recorded; mean school size was 2.0 ± 1.2. Distribution and abundance varied seasonally. During spring, dolphins were more equally distributed through the estuary than during summer when calves and adults remained mainly inside the estuary. The presence of dolphins year-round suggested that the inhabitants are residents of the estuary. This study offers new information on the ecology of the Commerson’s dolphin and confirms Ría Deseado as a breeding site for this species.
Fil: Righi, Carina F.. Fundación Temaikén; Argentina
Fil: Blanco, Gabriela Silvina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Frere, Esteban. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina - Materia
-
Commerson'S Dolphin
Cephalorhynchus Commersonii
Mark-Recapture
Tonina Overa
Patagonia
Río Deseado
Photo-Identification - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/23945
Ver los metadatos del registro completo
id |
CONICETDig_9c84c85cfc259ac41bf8df0e4c2b1426 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/23945 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, ArgentinaRighi, Carina F.Blanco, Gabriela SilvinaFrere, EstebanCommerson'S DolphinCephalorhynchus CommersoniiMark-RecaptureTonina OveraPatagoniaRío DeseadoPhoto-Identificationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Abundance and spatial distribution of the Commerson’s dolphin (Cephalorhynchus commersonii) during spring and summer 2002-2004 and fall/winter 2003 were estimated in the estuary Ría Deseado, Patagonia, Argentina. To estimate the abundance, photo-identification and mark-recapture (positive method) were combined. Distribution of dolphins within the estuary was studied, and their locations were recorded using a GPS to perform a Kernel Density Analysis. Adult abundance was higher during spring (34 and 35 individuals in 2002 and 2003, respectively) and decreased during fall (7 individuals) and winter (16 individuals). Sightings of 132 adults during winter, spring, and summer (n = 12, n = 76, and n = 44, respectively) and 14 calves during spring and summer (n = 4 and n = 10, respectively) were recorded; mean school size was 2.0 ± 1.2. Distribution and abundance varied seasonally. During spring, dolphins were more equally distributed through the estuary than during summer when calves and adults remained mainly inside the estuary. The presence of dolphins year-round suggested that the inhabitants are residents of the estuary. This study offers new information on the ecology of the Commerson’s dolphin and confirms Ría Deseado as a breeding site for this species.Fil: Righi, Carina F.. Fundación Temaikén; ArgentinaFil: Blanco, Gabriela Silvina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Frere, Esteban. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaEuropean Association for Aquatic Mammals2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23945Righi, Carina F.; Blanco, Gabriela Silvina; Frere, Esteban; Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina; European Association for Aquatic Mammals; Aquatic Mammals; 39; 1; 2-2013; 1-90167-5427CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1578/AM.39.1.2013.1info:eu-repo/semantics/altIdentifier/url/http://www.aquaticmammalsjournal.org/index.php?option=com_content&view=article&id=630:abundance-and-spatial-distribution-of-commersons-dolphin-cephalorhynchus-commersonii-at-a-breeding-site-ria-deseado-patagonia-argentina&catid=44&Itemid=157info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:45:52Zoai:ri.conicet.gov.ar:11336/23945instacron: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 09:45:52.519CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina |
title |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina |
spellingShingle |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina Righi, Carina F. Commerson'S Dolphin Cephalorhynchus Commersonii Mark-Recapture Tonina Overa Patagonia Río Deseado Photo-Identification |
title_short |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina |
title_full |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina |
title_fullStr |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina |
title_full_unstemmed |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina |
title_sort |
Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina |
dc.creator.none.fl_str_mv |
Righi, Carina F. Blanco, Gabriela Silvina Frere, Esteban |
author |
Righi, Carina F. |
author_facet |
Righi, Carina F. Blanco, Gabriela Silvina Frere, Esteban |
author_role |
author |
author2 |
Blanco, Gabriela Silvina Frere, Esteban |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Commerson'S Dolphin Cephalorhynchus Commersonii Mark-Recapture Tonina Overa Patagonia Río Deseado Photo-Identification |
topic |
Commerson'S Dolphin Cephalorhynchus Commersonii Mark-Recapture Tonina Overa Patagonia Río Deseado Photo-Identification |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Abundance and spatial distribution of the Commerson’s dolphin (Cephalorhynchus commersonii) during spring and summer 2002-2004 and fall/winter 2003 were estimated in the estuary Ría Deseado, Patagonia, Argentina. To estimate the abundance, photo-identification and mark-recapture (positive method) were combined. Distribution of dolphins within the estuary was studied, and their locations were recorded using a GPS to perform a Kernel Density Analysis. Adult abundance was higher during spring (34 and 35 individuals in 2002 and 2003, respectively) and decreased during fall (7 individuals) and winter (16 individuals). Sightings of 132 adults during winter, spring, and summer (n = 12, n = 76, and n = 44, respectively) and 14 calves during spring and summer (n = 4 and n = 10, respectively) were recorded; mean school size was 2.0 ± 1.2. Distribution and abundance varied seasonally. During spring, dolphins were more equally distributed through the estuary than during summer when calves and adults remained mainly inside the estuary. The presence of dolphins year-round suggested that the inhabitants are residents of the estuary. This study offers new information on the ecology of the Commerson’s dolphin and confirms Ría Deseado as a breeding site for this species. Fil: Righi, Carina F.. Fundación Temaikén; Argentina Fil: Blanco, Gabriela Silvina. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Frere, Esteban. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina |
description |
Abundance and spatial distribution of the Commerson’s dolphin (Cephalorhynchus commersonii) during spring and summer 2002-2004 and fall/winter 2003 were estimated in the estuary Ría Deseado, Patagonia, Argentina. To estimate the abundance, photo-identification and mark-recapture (positive method) were combined. Distribution of dolphins within the estuary was studied, and their locations were recorded using a GPS to perform a Kernel Density Analysis. Adult abundance was higher during spring (34 and 35 individuals in 2002 and 2003, respectively) and decreased during fall (7 individuals) and winter (16 individuals). Sightings of 132 adults during winter, spring, and summer (n = 12, n = 76, and n = 44, respectively) and 14 calves during spring and summer (n = 4 and n = 10, respectively) were recorded; mean school size was 2.0 ± 1.2. Distribution and abundance varied seasonally. During spring, dolphins were more equally distributed through the estuary than during summer when calves and adults remained mainly inside the estuary. The presence of dolphins year-round suggested that the inhabitants are residents of the estuary. This study offers new information on the ecology of the Commerson’s dolphin and confirms Ría Deseado as a breeding site for this species. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-02 |
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/11336/23945 Righi, Carina F.; Blanco, Gabriela Silvina; Frere, Esteban; Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina; European Association for Aquatic Mammals; Aquatic Mammals; 39; 1; 2-2013; 1-9 0167-5427 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/23945 |
identifier_str_mv |
Righi, Carina F.; Blanco, Gabriela Silvina; Frere, Esteban; Abundance and Spatial Distribution of Commerson’s Dolphin (Cephalorhynchus commersonii) at a Breeding Site: Ría Deseado, Patagonia, Argentina; European Association for Aquatic Mammals; Aquatic Mammals; 39; 1; 2-2013; 1-9 0167-5427 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1578/AM.39.1.2013.1 info:eu-repo/semantics/altIdentifier/url/http://www.aquaticmammalsjournal.org/index.php?option=com_content&view=article&id=630:abundance-and-spatial-distribution-of-commersons-dolphin-cephalorhynchus-commersonii-at-a-breeding-site-ria-deseado-patagonia-argentina&catid=44&Itemid=157 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
European Association for Aquatic Mammals |
publisher.none.fl_str_mv |
European Association for Aquatic Mammals |
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_ |
1842268759143743488 |
score |
13.13397 |