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dc.contributor.author
Clemente Carvalho, Rute B.G.
dc.contributor.author
Klaczko, Julia
dc.contributor.author
Perez, Sergio Ivan
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dc.contributor.author
Alves, Ana C.R.
dc.contributor.author
Haddad, Célio F.B.
dc.contributor.author
Dos Reis, Sérgio F.
dc.date.available
2019-08-07T19:39:32Z
dc.date.issued
2011-10
dc.identifier.citation
Clemente Carvalho, Rute B.G.; Klaczko, Julia; Perez, Sergio Ivan; Alves, Ana C.R.; Haddad, Célio F.B.; et al.; Molecular phylogenetic relationships and phenotypic diversity in miniaturized toadlets, genus Brachycephalus (Amphibia: Anura: Brachycephalidae); Academic Press Inc Elsevier Science; Molecular Phylogenetics and Evolution; 61; 1; 10-2011; 79-89
dc.identifier.issn
1055-7903
dc.identifier.uri
http://hdl.handle.net/11336/81140
dc.description.abstract
Toadlets of the genus Brachycephalus are endemic to the Atlantic rainforests of southeastern and southern Brazil. The 14 species currently described have snout-vent lengths less than 18. mm and are thought to have evolved through miniaturization: an evolutionary process leading to an extremely small adult body size. Here, we present the first comprehensive phylogenetic analysis for Brachycephalus, using a multilocus approach based on two nuclear (Rag-1 and Tyr) and three mitochondrial (Cyt b, 12S, and 16S rRNA) gene regions. Phylogenetic relationships were inferred using a partitioned Bayesian analysis of concatenated sequences and the hierarchical Bayesian method (BEST) that estimates species trees based on the multispecies coalescent model. Individual gene trees showed conflict and also varied in resolution. With the exception of the mitochondrial gene tree, no gene tree was completely resolved. The concatenated gene tree was completely resolved and is identical in topology and degree of statistical support to the individual mtDNA gene tree. On the other hand, the BEST species tree showed reduced significant node support relative to the concatenate tree and recovered a basal trichotomy, although some bipartitions were significantly supported at the tips of the species tree. Comparison of the log likelihoods for the concatenated and BEST trees suggests that the method implemented in BEST explains the multilocus data for Brachycephalus better than the Bayesian analysis of concatenated data. Landmark-based geometric morphometrics revealed marked variation in cranial shape between the species of Brachycephalus. In addition, a statistically significant association was demonstrated between variation in cranial shape and genetic distances estimated from the mtDNA and nuclear loci. Notably, B. ephippium and B. garbeana that are predicted to be sister-species in the individual and concatenated gene trees and the BEST species tree share an evolutionary novelty, the hyperossified dorsal plate.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Inc Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Amphibia
dc.subject
Best
dc.subject
Brachycephalus
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Brazil
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Gene Trees
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Geometric Morphometrics
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Species Tree
dc.subject.classification
Biología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Molecular phylogenetic relationships and phenotypic diversity in miniaturized toadlets, genus Brachycephalus (Amphibia: Anura: Brachycephalidae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-01T14:39:26Z
dc.journal.volume
61
dc.journal.number
1
dc.journal.pagination
79-89
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Clemente Carvalho, Rute B.G.. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Klaczko, Julia. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Perez, Sergio Ivan. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Antropología; Argentina. Universidad Nacional de La Plata. Facultad de Cienicas Naturales y Museo. División Antropología; Argentina
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Fil: Alves, Ana C.R.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.description.fil
Fil: Haddad, Célio F.B.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.description.fil
Fil: Dos Reis, Sérgio F.. Universidade Estadual de Campinas; Brasil
dc.journal.title
Molecular Phylogenetics and Evolution
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ympev.2011.05.017
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1055790311002594
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