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dc.contributor.author
Sánchez, Julieta
dc.contributor.author
Holley Reguiló, Juan Alfredo
dc.contributor.author
Poljak, Sebastián
dc.contributor.author
Bolzan, Alejandro Daniel
dc.contributor.author
Bravi, Claudio Marcelo
dc.date.available
2018-11-02T20:49:46Z
dc.date.issued
2017-09
dc.identifier.citation
Sánchez, Julieta; Holley Reguiló, Juan Alfredo; Poljak, Sebastián; Bolzan, Alejandro Daniel; Bravi, Claudio Marcelo; Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae); Magnolia Press; Zootaxa; 4320; 3; 9-2017; 487-504
dc.identifier.issn
1175-5326
dc.identifier.uri
http://hdl.handle.net/11336/63571
dc.description.abstract
We present a phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (the southernmost tortoises of South America) within crown Testudinidae. We compiled a dataset of 1118 bp cytochrome b (cyt b) sequences derived from 111 individuals sampled across the known geographic range of the species, and performed a phylogenetic analysis employing Maximum Parsimony, Maximum Likelihood and Bayesian Inference methods. The resulting trees showed sim- ilar topologies and support values. The C. chilensis complex was always recovered as a monophyletic group composed by two major clades (i.e. haplogroups). The biogeographic distribution of one of these clades overlaps with the Dry Chaco eco-region, while the biogeographic distribution of the other overlaps with the Monte eco-region. In order to date the or- igin and diversification time of these two clades, we employed a previously published two-step molecular clock method. In the first step we dated the time of origin of C. chilensis as a clade within the Testudinidae family using new and previ- ously published sequences, extinct testudinid taxa for age calibration and the Fossilized Birth-Death (FBD) model. In the second step we dated the divergence between the haplogroups of C. chilensis based on the time of origin estimated in the first step and a coalescent evolution model. Our results suggest that divergence between Dry Chaco and Monte tortoises may have occurred about 2.47 million of years ago. We interpret these results in the light of the environmental and geo- logical changes that occurred during the late Pliocene to Middle Pleistocene of South America.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Magnolia Press
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
HAPLOTYPES
dc.subject
MITOCHONDRIAL DNA
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MOLECULAR CLOCK
dc.subject
PHYLOGENY
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TESTUDINES
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TORTOISES
dc.subject.classification
Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-19T15:21:09Z
dc.identifier.eissn
1175-5334
dc.journal.volume
4320
dc.journal.number
3
dc.journal.pagination
487-504
dc.journal.pais
Nueva Zelanda
dc.journal.ciudad
Auckland
dc.description.fil
Fil: Sánchez, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
dc.description.fil
Fil: Holley Reguiló, Juan Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Diversidad y Evolución Austral; Argentina
dc.description.fil
Fil: Poljak, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Bolzan, Alejandro Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
dc.description.fil
Fil: Bravi, Claudio Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina
dc.journal.title
Zootaxa
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.11646/zootaxa.4320.3.5
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://biotaxa.org/Zootaxa/article/view/zootaxa.4320.3.5