A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)

Autores
Tarnawski, Bárbara Alejandra; Flores, David Alfredo; Cassini, Guillermo Hernán; Cappozzo, Humberto Luis
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analysed the cranial ontogeny of male Arctocephalus australis (Zimmermann, 1783) (N=116), Arctocephalus gazella (Peters, 1875) (N=69), and Arctocephalus tropicalis (Gray, 1872) (N=51) to study skull growth and its allometric patterns in the genus. We used 15 metric variables with bivariate and multivariate approaches to detect interspecific similarities and differences between growth trends, which we discussed in the context of phylogeny and life history. We found common trajectories in 20% of variables, detecting that the differences between adults were associated with size. We detected higher growth rates in A.gazella than in A.australis and A.tropicalis, which were associated with shape differences. Amongst the three species, A.tropicalis was morphologically intermediate, showing additional common trends with A.gazella and A.australis, and an intermediate position in the multivariate morphospace. Allometric patterns were also compared with growth trends described for Otaria byronia (Péron, 1816) and Mirounga leonina (Linnaeus, 1758). We detected positive allometry in Arctocephalus for the mastoid width (MW) but negative allometry in O.byronia and M.leonina. This could indicate that males of Arctocephalus exhibited a delayed development of MW. Finally, the presence of common growth trends for the skull length and the postorbital constriction could indicate a conservative pattern within otariids.
Fil: Tarnawski, Bárbara Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Flores, David Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Cassini, Guillermo Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Materia
ARCTOPHOCA
CRANIAL MORPHOMETRY
ONTOGENY
PINNIPEDIA
SKULL
TAXONOMY
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:11336/84466
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/84466
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)Tarnawski, Bárbara AlejandraFlores, David AlfredoCassini, Guillermo HernánCappozzo, Humberto LuisARCTOPHOCACRANIAL MORPHOMETRYONTOGENYPINNIPEDIASKULLTAXONOMYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We analysed the cranial ontogeny of male Arctocephalus australis (Zimmermann, 1783) (N=116), Arctocephalus gazella (Peters, 1875) (N=69), and Arctocephalus tropicalis (Gray, 1872) (N=51) to study skull growth and its allometric patterns in the genus. We used 15 metric variables with bivariate and multivariate approaches to detect interspecific similarities and differences between growth trends, which we discussed in the context of phylogeny and life history. We found common trajectories in 20% of variables, detecting that the differences between adults were associated with size. We detected higher growth rates in A.gazella than in A.australis and A.tropicalis, which were associated with shape differences. Amongst the three species, A.tropicalis was morphologically intermediate, showing additional common trends with A.gazella and A.australis, and an intermediate position in the multivariate morphospace. Allometric patterns were also compared with growth trends described for Otaria byronia (Péron, 1816) and Mirounga leonina (Linnaeus, 1758). We detected positive allometry in Arctocephalus for the mastoid width (MW) but negative allometry in O.byronia and M.leonina. This could indicate that males of Arctocephalus exhibited a delayed development of MW. Finally, the presence of common growth trends for the skull length and the postorbital constriction could indicate a conservative pattern within otariids.Fil: Tarnawski, Bárbara Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Flores, David Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Cassini, Guillermo Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; ArgentinaFil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaWiley Blackwell Publishing, Inc2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/84466Tarnawski, Bárbara Alejandra; Flores, David Alfredo; Cassini, Guillermo Hernán; Cappozzo, Humberto Luis; A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus); Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 173; 1; 1-2015; 249-2690024-4082CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/zoj.12197info:eu-repo/semantics/altIdentifier/doi/10.1111/zoj.12197info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:54:32Zoai:ri.conicet.gov.ar:11336/84466instacron: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 09:54:32.532CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
title A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
spellingShingle A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
Tarnawski, Bárbara Alejandra
ARCTOPHOCA
CRANIAL MORPHOMETRY
ONTOGENY
PINNIPEDIA
SKULL
TAXONOMY
title_short A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
title_full A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
title_fullStr A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
title_full_unstemmed A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
title_sort A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus)
dc.creator.none.fl_str_mv Tarnawski, Bárbara Alejandra
Flores, David Alfredo
Cassini, Guillermo Hernán
Cappozzo, Humberto Luis
author Tarnawski, Bárbara Alejandra
author_facet Tarnawski, Bárbara Alejandra
Flores, David Alfredo
Cassini, Guillermo Hernán
Cappozzo, Humberto Luis
author_role author
author2 Flores, David Alfredo
Cassini, Guillermo Hernán
Cappozzo, Humberto Luis
author2_role author
author
author
dc.subject.none.fl_str_mv ARCTOPHOCA
CRANIAL MORPHOMETRY
ONTOGENY
PINNIPEDIA
SKULL
TAXONOMY
topic ARCTOPHOCA
CRANIAL MORPHOMETRY
ONTOGENY
PINNIPEDIA
SKULL
TAXONOMY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We analysed the cranial ontogeny of male Arctocephalus australis (Zimmermann, 1783) (N=116), Arctocephalus gazella (Peters, 1875) (N=69), and Arctocephalus tropicalis (Gray, 1872) (N=51) to study skull growth and its allometric patterns in the genus. We used 15 metric variables with bivariate and multivariate approaches to detect interspecific similarities and differences between growth trends, which we discussed in the context of phylogeny and life history. We found common trajectories in 20% of variables, detecting that the differences between adults were associated with size. We detected higher growth rates in A.gazella than in A.australis and A.tropicalis, which were associated with shape differences. Amongst the three species, A.tropicalis was morphologically intermediate, showing additional common trends with A.gazella and A.australis, and an intermediate position in the multivariate morphospace. Allometric patterns were also compared with growth trends described for Otaria byronia (Péron, 1816) and Mirounga leonina (Linnaeus, 1758). We detected positive allometry in Arctocephalus for the mastoid width (MW) but negative allometry in O.byronia and M.leonina. This could indicate that males of Arctocephalus exhibited a delayed development of MW. Finally, the presence of common growth trends for the skull length and the postorbital constriction could indicate a conservative pattern within otariids.
Fil: Tarnawski, Bárbara Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Flores, David Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Cassini, Guillermo Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Fil: Cappozzo, Humberto Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
description We analysed the cranial ontogeny of male Arctocephalus australis (Zimmermann, 1783) (N=116), Arctocephalus gazella (Peters, 1875) (N=69), and Arctocephalus tropicalis (Gray, 1872) (N=51) to study skull growth and its allometric patterns in the genus. We used 15 metric variables with bivariate and multivariate approaches to detect interspecific similarities and differences between growth trends, which we discussed in the context of phylogeny and life history. We found common trajectories in 20% of variables, detecting that the differences between adults were associated with size. We detected higher growth rates in A.gazella than in A.australis and A.tropicalis, which were associated with shape differences. Amongst the three species, A.tropicalis was morphologically intermediate, showing additional common trends with A.gazella and A.australis, and an intermediate position in the multivariate morphospace. Allometric patterns were also compared with growth trends described for Otaria byronia (Péron, 1816) and Mirounga leonina (Linnaeus, 1758). We detected positive allometry in Arctocephalus for the mastoid width (MW) but negative allometry in O.byronia and M.leonina. This could indicate that males of Arctocephalus exhibited a delayed development of MW. Finally, the presence of common growth trends for the skull length and the postorbital constriction could indicate a conservative pattern within otariids.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
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/11336/84466
Tarnawski, Bárbara Alejandra; Flores, David Alfredo; Cassini, Guillermo Hernán; Cappozzo, Humberto Luis; A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus); Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 173; 1; 1-2015; 249-269
0024-4082
CONICET Digital
CONICET
url http://hdl.handle.net/11336/84466
identifier_str_mv Tarnawski, Bárbara Alejandra; Flores, David Alfredo; Cassini, Guillermo Hernán; Cappozzo, Humberto Luis; A comparative analysis on cranial ontogeny of South American fur seals (Otariidae: Arctocephalus); Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 173; 1; 1-2015; 249-269
0024-4082
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/zoj.12197
info:eu-repo/semantics/altIdentifier/doi/10.1111/zoj.12197
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
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
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score 13.13397

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