Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).

Autores
Flores, David Alfredo; Saguir, Omar; Amador, Lucila Inés; Catalano, Santiago Andres
Año de publicación
2025
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The diversity of skeletal shape in mammals is influenced by phylogeny, ecology, and intrinsic factors generating covariation between structures. Geometric morphometrics has enriched shape studies, though typically limited to single structures. This study assessed the effects of phylogeny, diet, locomotion, size, and morphological integration across 11 cranial and postcranial elements in 44 didelphid species, using 14 2D landmark configurations. We applied multifactorial analysis, PCA, a multivariate adaptation of Blomberg's K for phylogenetic signal, phylogenetic ANOVA for ecological and size effects, and an exploratory integration analysis of all element pairs. Morphospaces showed overlap between taxonomic groups, with partial separation of Didelphini, frugivores, and arboreal versus terrestrial species. Most configurations showed significant phylogenetic signal, except for the femur and tibia. Phylogenetic ANOVA revealed that only locomotion significantly affected anterior structures (skull, cervical vertebrae, forelimb). Integration analysis identified the atlas and axis as central elements, but less expected was the centrality of the tibia and fibula. In contrast, the skull (dorsal view), mandible, and scapula were the least connected. Most covariations occurred between different body regions, with scarce integration within regions such as the forelimb. Results suggest a strong phylogenetic influence on shape, but also highlight the role of locomotion in anterior structures—contrasting with placental mammals, where hindlimbs are often more specialized. This may reflect divergent functional evolution between marsupials and placentals.
Fil: Flores, David Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Saguir, Omar. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Superior de Entomología; Argentina
Fil: Amador, Lucila Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Catalano, Santiago Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
14th International Congress of Vertebrate Morphology
Estados Unidos
International Society of Vertebrate Morphologists
Materia
Didelfidos
Landmarks
Adaptacion
Evolucion
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:11336/290806
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/290806
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).Flores, David AlfredoSaguir, OmarAmador, Lucila InésCatalano, Santiago AndresDidelfidosLandmarksAdaptacionEvolucionhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The diversity of skeletal shape in mammals is influenced by phylogeny, ecology, and intrinsic factors generating covariation between structures. Geometric morphometrics has enriched shape studies, though typically limited to single structures. This study assessed the effects of phylogeny, diet, locomotion, size, and morphological integration across 11 cranial and postcranial elements in 44 didelphid species, using 14 2D landmark configurations. We applied multifactorial analysis, PCA, a multivariate adaptation of Blomberg's K for phylogenetic signal, phylogenetic ANOVA for ecological and size effects, and an exploratory integration analysis of all element pairs. Morphospaces showed overlap between taxonomic groups, with partial separation of Didelphini, frugivores, and arboreal versus terrestrial species. Most configurations showed significant phylogenetic signal, except for the femur and tibia. Phylogenetic ANOVA revealed that only locomotion significantly affected anterior structures (skull, cervical vertebrae, forelimb). Integration analysis identified the atlas and axis as central elements, but less expected was the centrality of the tibia and fibula. In contrast, the skull (dorsal view), mandible, and scapula were the least connected. Most covariations occurred between different body regions, with scarce integration within regions such as the forelimb. Results suggest a strong phylogenetic influence on shape, but also highlight the role of locomotion in anterior structures—contrasting with placental mammals, where hindlimbs are often more specialized. This may reflect divergent functional evolution between marsupials and placentals.Fil: Flores, David Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Saguir, Omar. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Superior de Entomología; ArgentinaFil: Amador, Lucila Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Catalano, Santiago Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina14th International Congress of Vertebrate MorphologyEstados UnidosInternational Society of Vertebrate MorphologistsWiley2025info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/290806Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).; 14th International Congress of Vertebrate Morphology; Estados Unidos; 2025; 52-520362-2525CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.isvm-icvm.org/previous-meetingsinfo:eu-repo/semantics/altIdentifier/doi/10.1002/jmor.70059Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:54:56Zoai:ri.conicet.gov.ar:11336/290806instacron: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:34982026-08-25 14:54:56.924CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
title Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
spellingShingle Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
Flores, David Alfredo
Didelfidos
Landmarks
Adaptacion
Evolucion
title_short Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
title_full Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
title_fullStr Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
title_full_unstemmed Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
title_sort Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).
dc.creator.none.fl_str_mv Flores, David Alfredo
Saguir, Omar
Amador, Lucila Inés
Catalano, Santiago Andres
author Flores, David Alfredo
author_facet Flores, David Alfredo
Saguir, Omar
Amador, Lucila Inés
Catalano, Santiago Andres
author_role author
author2 Saguir, Omar
Amador, Lucila Inés
Catalano, Santiago Andres
author2_role author
author
author
dc.subject.none.fl_str_mv Didelfidos
Landmarks
Adaptacion
Evolucion
topic Didelfidos
Landmarks
Adaptacion
Evolucion
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 diversity of skeletal shape in mammals is influenced by phylogeny, ecology, and intrinsic factors generating covariation between structures. Geometric morphometrics has enriched shape studies, though typically limited to single structures. This study assessed the effects of phylogeny, diet, locomotion, size, and morphological integration across 11 cranial and postcranial elements in 44 didelphid species, using 14 2D landmark configurations. We applied multifactorial analysis, PCA, a multivariate adaptation of Blomberg's K for phylogenetic signal, phylogenetic ANOVA for ecological and size effects, and an exploratory integration analysis of all element pairs. Morphospaces showed overlap between taxonomic groups, with partial separation of Didelphini, frugivores, and arboreal versus terrestrial species. Most configurations showed significant phylogenetic signal, except for the femur and tibia. Phylogenetic ANOVA revealed that only locomotion significantly affected anterior structures (skull, cervical vertebrae, forelimb). Integration analysis identified the atlas and axis as central elements, but less expected was the centrality of the tibia and fibula. In contrast, the skull (dorsal view), mandible, and scapula were the least connected. Most covariations occurred between different body regions, with scarce integration within regions such as the forelimb. Results suggest a strong phylogenetic influence on shape, but also highlight the role of locomotion in anterior structures—contrasting with placental mammals, where hindlimbs are often more specialized. This may reflect divergent functional evolution between marsupials and placentals.
Fil: Flores, David Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Saguir, Omar. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Superior de Entomología; Argentina
Fil: Amador, Lucila Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Catalano, Santiago Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
14th International Congress of Vertebrate Morphology
Estados Unidos
International Society of Vertebrate Morphologists
description The diversity of skeletal shape in mammals is influenced by phylogeny, ecology, and intrinsic factors generating covariation between structures. Geometric morphometrics has enriched shape studies, though typically limited to single structures. This study assessed the effects of phylogeny, diet, locomotion, size, and morphological integration across 11 cranial and postcranial elements in 44 didelphid species, using 14 2D landmark configurations. We applied multifactorial analysis, PCA, a multivariate adaptation of Blomberg's K for phylogenetic signal, phylogenetic ANOVA for ecological and size effects, and an exploratory integration analysis of all element pairs. Morphospaces showed overlap between taxonomic groups, with partial separation of Didelphini, frugivores, and arboreal versus terrestrial species. Most configurations showed significant phylogenetic signal, except for the femur and tibia. Phylogenetic ANOVA revealed that only locomotion significantly affected anterior structures (skull, cervical vertebrae, forelimb). Integration analysis identified the atlas and axis as central elements, but less expected was the centrality of the tibia and fibula. In contrast, the skull (dorsal view), mandible, and scapula were the least connected. Most covariations occurred between different body regions, with scarce integration within regions such as the forelimb. Results suggest a strong phylogenetic influence on shape, but also highlight the role of locomotion in anterior structures—contrasting with placental mammals, where hindlimbs are often more specialized. This may reflect divergent functional evolution between marsupials and placentals.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/290806
Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).; 14th International Congress of Vertebrate Morphology; Estados Unidos; 2025; 52-52
0362-2525
CONICET Digital
CONICET
url http://hdl.handle.net/11336/290806
identifier_str_mv Ecological, Phylogenetic, and Intrinsic Effects on Skeletal Shape in Didelphid Marsupials (Didelphimorphia: Didelphidae).; 14th International Congress of Vertebrate Morphology; Estados Unidos; 2025; 52-52
0362-2525
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://www.isvm-icvm.org/previous-meetings
info:eu-repo/semantics/altIdentifier/doi/10.1002/jmor.70059
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.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
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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