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dc.contributor.author
Olave, Melisa  
dc.contributor.author
Avila, Luciano Javier  
dc.contributor.author
Sites, Jack W.  
dc.contributor.author
Morando, Mariana  
dc.date.available
2016-05-10T20:36:20Z  
dc.date.issued
2015-02  
dc.identifier.citation
Olave, Melisa; Avila, Luciano Javier; Sites, Jack W.; Morando, Mariana; Model-based approach to test hard polytomies in the Eulaemus clade of the most diverse South American lizard genus Liolaemus (Liolaemini, Squamata); Wiley; Zoological Journal Of The Linnean Society; 174; 1; 2-2015; 169-184  
dc.identifier.issn
0024-4082  
dc.identifier.uri
http://hdl.handle.net/11336/5609  
dc.description.abstract
Lack of resolution in a phylogenetic tree is usually represented as a polytomy, and often adding more data (loci and taxa) resolves the species tree. These are the ‘soft’ polytomies, but in other cases additional data fail to resolve relationships; these are the ‘hard’ polytomies. This latter case is often interpreted as a simultaneous radiation of lineages in the history of a clade. Although hard polytomies are difficult to address, model-based approaches provide new tools to test these hypotheses. Here, we used a clade of 144 species of the South American lizard clade Eulaemus to estimate phylogenies using a traditional concatenated matrix and three species tree methods: *BEAST, BEST, and minimizing deep coalescences (MDC). The different species tree methods recovered largely discordant results, but all resolved the same polytomy (e.g. very short internodes amongst lineages and low nodal support in Bayesian methods). We simulated data sets under eight explicit evolutionary models (including hard polytomies), tested these against empirical data (a total of 14 loci), and found support for two polytomies as the most plausible hypothesis for diversification of this clade. We discuss the performance of these methods and their limitations under the challenging scenario of hard polytomies.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Deep Coalescences  
dc.subject
Incomplete Lineage Sorting  
dc.subject
Phylogeny  
dc.subject
Species Tree  
dc.subject.classification
Biología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Model-based approach to test hard polytomies in the Eulaemus clade of the most diverse South American lizard genus Liolaemus (Liolaemini, Squamata)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2016-04-28T14:52:09Z  
dc.journal.volume
174  
dc.journal.number
1  
dc.journal.pagination
169-184  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Hoboken  
dc.description.fil
Fil: Olave, Melisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Avila, Luciano Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Sites, Jack W.. University Brigham Young; Estados Unidos  
dc.description.fil
Fil: Morando, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina  
dc.journal.title
Zoological Journal Of The Linnean Society  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/zoj.12231/abstract  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1111/zoj.12231  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/zoj.12231