Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina

Autores
Ferrari, Mariano Andrés; Lewis, Mirtha Noemi; Pascual, Miguel Alberto; Campagna, Claudio
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Southern elephant seals breed at Península Valdés (PV, Argentina) along 200 km of coastline. Annual pup counts at peak breeding season for the entire colony increased from 12,113 in 1995 to 14,350 in 2006. Two demographic subunits were identified in the North and South of PV with different trends in births numbers, sex ratios and harem sizes. Birth numbers increased in the South, but decreased sharply in the North. To explain the trends in the colony and subunits, a population model was proposed that integrates social structure (harem size and sex ratio) in a fertility function that quantifies the effects of the social structure on the number of births. We found that a better fit to census data results from our model compared to a linear one (χ12 = 4.027, P = 0.045). The model was then used to test alternative hypotheses about the role of recruitment and migration on the dynamic of the two subunits. Results indicated the relevance of considering social structure in population models of gregarious and polygynous species, and is an additional tool for comparative studies between populations of elephant seals where long term census are available.
Fil: Ferrari, Mariano Andrés. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Campagna, Claudio. Wildlife Conservation Society; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Materia
FERTILITY FUNCTION
POPULATION MODEL
SEX RATIO
SOUTHERN ELEPHANT SEAL
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:11336/96070
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, ArgentinaFerrari, Mariano AndrésLewis, Mirtha NoemiPascual, Miguel AlbertoCampagna, ClaudioFERTILITY FUNCTIONPOPULATION MODELSEX RATIOSOUTHERN ELEPHANT SEALhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Southern elephant seals breed at Península Valdés (PV, Argentina) along 200 km of coastline. Annual pup counts at peak breeding season for the entire colony increased from 12,113 in 1995 to 14,350 in 2006. Two demographic subunits were identified in the North and South of PV with different trends in births numbers, sex ratios and harem sizes. Birth numbers increased in the South, but decreased sharply in the North. To explain the trends in the colony and subunits, a population model was proposed that integrates social structure (harem size and sex ratio) in a fertility function that quantifies the effects of the social structure on the number of births. We found that a better fit to census data results from our model compared to a linear one (χ12 = 4.027, P = 0.045). The model was then used to test alternative hypotheses about the role of recruitment and migration on the dynamic of the two subunits. Results indicated the relevance of considering social structure in population models of gregarious and polygynous species, and is an additional tool for comparative studies between populations of elephant seals where long term census are available.Fil: Ferrari, Mariano Andrés. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Campagna, Claudio. Wildlife Conservation Society; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaWiley Blackwell Publishing, Inc2009-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/96070Ferrari, Mariano Andrés; Lewis, Mirtha Noemi; Pascual, Miguel Alberto; Campagna, Claudio; Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina; Wiley Blackwell Publishing, Inc; Marine Mammal Science; 25; 3; 7-2009; 681-6920824-0469CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1748-7692.2008.00268.xinfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1748-7692.2008.00268.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 Técnicas2025-09-29T10:25:58Zoai:ri.conicet.gov.ar:11336/96070instacron: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:34982025-09-29 10:25:58.353CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
title Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
spellingShingle Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
Ferrari, Mariano Andrés
FERTILITY FUNCTION
POPULATION MODEL
SEX RATIO
SOUTHERN ELEPHANT SEAL
title_short Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
title_full Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
title_fullStr Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
title_full_unstemmed Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
title_sort Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina
dc.creator.none.fl_str_mv Ferrari, Mariano Andrés
Lewis, Mirtha Noemi
Pascual, Miguel Alberto
Campagna, Claudio
author Ferrari, Mariano Andrés
author_facet Ferrari, Mariano Andrés
Lewis, Mirtha Noemi
Pascual, Miguel Alberto
Campagna, Claudio
author_role author
author2 Lewis, Mirtha Noemi
Pascual, Miguel Alberto
Campagna, Claudio
author2_role author
author
author
dc.subject.none.fl_str_mv FERTILITY FUNCTION
POPULATION MODEL
SEX RATIO
SOUTHERN ELEPHANT SEAL
topic FERTILITY FUNCTION
POPULATION MODEL
SEX RATIO
SOUTHERN ELEPHANT SEAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Southern elephant seals breed at Península Valdés (PV, Argentina) along 200 km of coastline. Annual pup counts at peak breeding season for the entire colony increased from 12,113 in 1995 to 14,350 in 2006. Two demographic subunits were identified in the North and South of PV with different trends in births numbers, sex ratios and harem sizes. Birth numbers increased in the South, but decreased sharply in the North. To explain the trends in the colony and subunits, a population model was proposed that integrates social structure (harem size and sex ratio) in a fertility function that quantifies the effects of the social structure on the number of births. We found that a better fit to census data results from our model compared to a linear one (χ12 = 4.027, P = 0.045). The model was then used to test alternative hypotheses about the role of recruitment and migration on the dynamic of the two subunits. Results indicated the relevance of considering social structure in population models of gregarious and polygynous species, and is an additional tool for comparative studies between populations of elephant seals where long term census are available.
Fil: Ferrari, Mariano Andrés. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Pascual, Miguel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Campagna, Claudio. Wildlife Conservation Society; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
description Southern elephant seals breed at Península Valdés (PV, Argentina) along 200 km of coastline. Annual pup counts at peak breeding season for the entire colony increased from 12,113 in 1995 to 14,350 in 2006. Two demographic subunits were identified in the North and South of PV with different trends in births numbers, sex ratios and harem sizes. Birth numbers increased in the South, but decreased sharply in the North. To explain the trends in the colony and subunits, a population model was proposed that integrates social structure (harem size and sex ratio) in a fertility function that quantifies the effects of the social structure on the number of births. We found that a better fit to census data results from our model compared to a linear one (χ12 = 4.027, P = 0.045). The model was then used to test alternative hypotheses about the role of recruitment and migration on the dynamic of the two subunits. Results indicated the relevance of considering social structure in population models of gregarious and polygynous species, and is an additional tool for comparative studies between populations of elephant seals where long term census are available.
publishDate 2009
dc.date.none.fl_str_mv 2009-07
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/11336/96070
Ferrari, Mariano Andrés; Lewis, Mirtha Noemi; Pascual, Miguel Alberto; Campagna, Claudio; Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina; Wiley Blackwell Publishing, Inc; Marine Mammal Science; 25; 3; 7-2009; 681-692
0824-0469
CONICET Digital
CONICET
url http://hdl.handle.net/11336/96070
identifier_str_mv Ferrari, Mariano Andrés; Lewis, Mirtha Noemi; Pascual, Miguel Alberto; Campagna, Claudio; Interdependence of social structure and demography in the Southern elephant seal colony of Península Valdés, Argentina; Wiley Blackwell Publishing, Inc; Marine Mammal Science; 25; 3; 7-2009; 681-692
0824-0469
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1748-7692.2008.00268.x
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1748-7692.2008.00268.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
application/pdf
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_ 1844614259506413568
score 13.070432

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