Molecular phylogenetic analyses reveal the importance of taxon sampling in cryptic diversity: Liolaemus nigroviridis and L. monticola (Liolaeminae) as focal species

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dc.contributor.authorTorres Pérez, Fernando
dc.contributor.authorPalma Vásquez, Ramón Eduardo
dc.contributor.authorBoric Bargetto, Dusan Vladimir
dc.contributor.authorRodríguez Valenzuela, Evelyn.
dc.contributor.authorEscobar, Constanza.
dc.date.accessioned2019-10-17T15:05:48Z
dc.date.available2019-10-17T15:05:48Z
dc.date.issued2017
dc.date.updated2019-10-14T19:13:40Z
dc.description.abstractAbstract Background Mitochondrial markers are widely used as a first approach in determining evolutionary relationships among vertebrate taxa at different hierarchical scales. Cytochrome b and cytochrome oxidase I are among the most common markers; they are particularly useful in phylogeography and species delineation studies. Simulation and empirical studies show that increasing the taxon sampling has a clear and strong effect on the accuracy of the inferred trees and therefore on hypothesized phylogenetic relationships (and eventually in new taxonomic rearrangements); this should be considered in the design of studies. The lizard genus Liolaemus is widely distributed in southern South America and includes more than 250 described species. The number of taxa and the distribution of Liolaemus species/populations makes them a good model for testing different hypotheses in systematics. Methods We studied two Liolaemus species, Liolaemus nigroviridis and L. monticola as focal species to evaluate their monophyly and the influence of adding new samples from related taxa in the resulting phylogenies. We performed phylogenetic analyses (maximum likelihood and Bayesian inference) using 141 sequences of the mitochondrial DNA Cytochrome b (cyt-b) of 11 Liolaemus species. Results Our study show that using intensive taxon sampling for phylogenetic reconstructions, two species (L. uniformis and L. nitidus) are placed within the clades of the two focal species (L. nigroviridis and L. monticola, respectively). Conclusions Our study confirms the importance of taxon sampling to infer more accurate phylogenetic relationships, particularly to reveal hidden polyphyly or paraphyly, which may have a strong impact on taxonomic proposals and/or inferring cryptic diversity.
dc.fuente.origenBiomed Central
dc.identifier.citationRevista Chilena de Historia Natural. 2017 Jun 20;90(1):5
dc.identifier.doi10.1186/s40693-017-0068-z
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/26746
dc.identifier.urihttps://doi.org/10.1186/s40693-017-0068-z
dc.issue.numeroNo. 5
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final10
dc.pagina.inicio1
dc.revistaRevista Chilena de Historia Naturales_ES
dc.rightsacceso abierto
dc.rights.holderThe Author(s).
dc.subject.ddc570
dc.subject.deweyBiologíaes_ES
dc.subject.otherLiolaemus - Chilees_ES
dc.subject.otherClasificaciónes_ES
dc.subject.otherReptiles - Identificaciónes_ES
dc.subject.otherFilogenética moleculares_ES
dc.titleMolecular phylogenetic analyses reveal the importance of taxon sampling in cryptic diversity: Liolaemus nigroviridis and L. monticola (Liolaeminae) as focal specieses_ES
dc.typeartículo
dc.volumenVol. 90
sipa.codpersvinculados100250
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