Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans

Background: Comparative genomic data among organisms allow the reconstruction of their phylogenies and evolutionary time scales. Molecular timings have been recently used to suggest that environmental global change have shaped the evolutionary history of diverse terrestrial organisms. Living xenarth...

ver descrição completa

Detalhes bibliográficos
Autores: Delsuc, Fréderic, Vizcaíno, Sergio Fabián, Douzery, Emmanuel J. P.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2004
País:Argentina
Recursos:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:español
OAI Identifier:oai:sedici.unlp.edu.ar:10915/36576
Acesso em linha:http://sedici.unlp.edu.ar/handle/10915/36576
Access Level:acceso abierto
Palavra-chave:Ciencias Naturales
Paleontología
Biología
América Latina
Terciario
armadillo
bayesian dating
Dasypodidae
evolution
global change
Edentata
Eutheria
mammals
Hystricognathi
palaeontology
Metatheria
phylogeny
Myrmecophagidae
relaxed molecular clock
primates
Xenarthrans
Rodentia
id AR_804a2f1dcc3ca04b716d21bbfc74d8ee
oai_identifier_str oai:sedici.unlp.edu.ar:10915/36576
network_acronym_str AR
network_name_str Argentina
repository_id_str
spelling Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthransDelsuc, FrédericVizcaíno, Sergio FabiánDouzery, Emmanuel J. P.Ciencias NaturalesPaleontologíaBiologíaAmérica LatinaTerciarioarmadillobayesian datingDasypodidaeevolutionglobal changeEdentataEutheriamammalsHystricognathipalaeontologyMetatheriaphylogenyMyrmecophagidaerelaxed molecular clockprimatesXenarthransRodentiaBackground: Comparative genomic data among organisms allow the reconstruction of their phylogenies and evolutionary time scales. Molecular timings have been recently used to suggest that environmental global change have shaped the evolutionary history of diverse terrestrial organisms. Living xenarthrans (armadillos, anteaters and sloths) constitute an ideal model for studying the influence of past environmental changes on species diversification. Indeed, extant xenarthran species are relicts from an evolutionary radiation enhanced by their isolation in South America during the Tertiary era, a period for which major climate variations and tectonic events are relatively well documented. Results: We applied a Bayesian approach to three nuclear genes in order to relax the molecular clock assumption while accounting for differences in evolutionary dynamics among genes and incorporating paleontological uncertainties. We obtained a molecular time scale for the evolution of extant xenarthrans and other placental mammals. Divergence time estimates provide substantial evidence for contemporaneous diversification events among independent xenarthran lineages. This correlated pattern of diversification might possibly relate to major environmental changes that occurred in South America during the Cenozoic. Conclusions: The observed synchronicity between planetary and biological events suggests that global change played a crucial role in shaping the evolutionary history of extant xenarthrans. Our findings open ways to test this hypothesis further in other South American mammalian endemics like hystricognath rodents, platyrrhine primates, and didelphid marsupials.Facultad de Ciencias Naturales y Museo2004-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/36576spainfo:eu-repo/semantics/altIdentifier/url/http://www.biomedcentral.com/content/pdf/1471-2148-4-11.pdfinfo:eu-repo/semantics/altIdentifier/issn/1471-2148info:eu-repo/semantics/altIdentifier/doi/10.1186/1471-2148-4-11info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T12:36:05Zoai:sedici.unlp.edu.ar:10915/36576Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 12:36:05.888SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
title Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
spellingShingle Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
Delsuc, Fréderic
Ciencias Naturales
Paleontología
Biología
América Latina
Terciario
armadillo
bayesian dating
Dasypodidae
evolution
global change
Edentata
Eutheria
mammals
Hystricognathi
palaeontology
Metatheria
phylogeny
Myrmecophagidae
relaxed molecular clock
primates
Xenarthrans
Rodentia
title_short Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
title_full Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
title_fullStr Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
title_full_unstemmed Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
title_sort Influence of Tertiary paleoenvironmental changes on the diversification of South American mammals: A relaxed molecular clock study within xenarthrans
dc.creator.none.fl_str_mv Delsuc, Fréderic
Vizcaíno, Sergio Fabián
Douzery, Emmanuel J. P.
author Delsuc, Fréderic
author_facet Delsuc, Fréderic
Vizcaíno, Sergio Fabián
Douzery, Emmanuel J. P.
author_role author
author2 Vizcaíno, Sergio Fabián
Douzery, Emmanuel J. P.
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Paleontología
Biología
América Latina
Terciario
armadillo
bayesian dating
Dasypodidae
evolution
global change
Edentata
Eutheria
mammals
Hystricognathi
palaeontology
Metatheria
phylogeny
Myrmecophagidae
relaxed molecular clock
primates
Xenarthrans
Rodentia
topic Ciencias Naturales
Paleontología
Biología
América Latina
Terciario
armadillo
bayesian dating
Dasypodidae
evolution
global change
Edentata
Eutheria
mammals
Hystricognathi
palaeontology
Metatheria
phylogeny
Myrmecophagidae
relaxed molecular clock
primates
Xenarthrans
Rodentia
description Background: Comparative genomic data among organisms allow the reconstruction of their phylogenies and evolutionary time scales. Molecular timings have been recently used to suggest that environmental global change have shaped the evolutionary history of diverse terrestrial organisms. Living xenarthrans (armadillos, anteaters and sloths) constitute an ideal model for studying the influence of past environmental changes on species diversification. Indeed, extant xenarthran species are relicts from an evolutionary radiation enhanced by their isolation in South America during the Tertiary era, a period for which major climate variations and tectonic events are relatively well documented. Results: We applied a Bayesian approach to three nuclear genes in order to relax the molecular clock assumption while accounting for differences in evolutionary dynamics among genes and incorporating paleontological uncertainties. We obtained a molecular time scale for the evolution of extant xenarthrans and other placental mammals. Divergence time estimates provide substantial evidence for contemporaneous diversification events among independent xenarthran lineages. This correlated pattern of diversification might possibly relate to major environmental changes that occurred in South America during the Cenozoic. Conclusions: The observed synchronicity between planetary and biological events suggests that global change played a crucial role in shaping the evolutionary history of extant xenarthrans. Our findings open ways to test this hypothesis further in other South American mammalian endemics like hystricognath rodents, platyrrhine primates, and didelphid marsupials.
publishDate 2004
dc.date.none.fl_str_mv 2004-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/36576
url http://sedici.unlp.edu.ar/handle/10915/36576
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.biomedcentral.com/content/pdf/1471-2148-4-11.pdf
info:eu-repo/semantics/altIdentifier/issn/1471-2148
info:eu-repo/semantics/altIdentifier/doi/10.1186/1471-2148-4-11
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1799194018053095424
score 15,812429

Registos relacionados