FEMENIAS martin Miguel
congresos y reuniones científicas
The Leiosaurae 'matuastos' lizard clade endemic to southern South America: phylogeography, species limits, biogeographic history and new candidate species
FEMENIAS, MARTIN MIGUEL; AVILA, LUCIANO JAVIER; SITES, JACK W.; MORANDO, MARIANA
Encuentro; Joint Meeting of Ichthyologists and Herpetologists; 2017
Society for the Study of Amphibians and Reptiles, Herpetologists? League, American Society of Ichthyologists and Herpetologists, American Elasmobranch Society
The Leiosaurae is one of the most enigmatic lizard clades from the Southern Cone of South America. The species of this clade are poorly represented in herpetological collections and almost nothing is known of their natural history. These limitations make this clade one of the least known of the herpetofauna of South America. Although a recent molecular phylogeny with most of the 18 described species has been published, no within-species studies have been completed, and here we present a phylogeographic study of the four species of the genus Diplolaemus, as well as for Leiosaurus bellii in a paleogeographic context. We implemented a species delimitation study on this clade, using a multilocus coalescent approach, and a sample of 342 individuals from 235 localities, the most extensive to date for this clade. We present molecular diversity indexes and infer historical demographic patterns based on the cyt-b gene, and we update the phylogeny of the group based on two mitochondrial and eight nuclear genes. We generate hypotheses for the historical biogeography and evolutionary history of this clade.