IDEAUS - CENPAT   25626
INSTITUTO DE DIVERSIDAD Y EVOLUCION AUSTRAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
New morphological and DNA data gives better resolution to the phylogenetic hypotheses of a Patagonian clade of reptiles
Autor/es:
BARRASSO DA; PAZ M; LOBO F; BASSO NG
Lugar:
Ciudad Autónoma de Buenos Aires
Reunión:
Congreso; 35th Annual Meeting of the Willi Hennig Society and XII Reunión Argentina de Cladística y Biogeografía; 2016
Resumen:
Phymaturus is a clade of lizards that occurs at moderate to high elevations in western Argentina and the adjacent central region of Chile, as well as in various volcanic tablelands of the Patagonian region of Argentina. Phymaturus was previously divided into two groups by Etheridge (1995), the patagonicus andthe palluma group. The first phylogenetic approaches were made by Lobo & Quinteros (2005) and Lobo et al. (2012), both based exclusively on morphological characters. In the present study we analyzed the relationships within the patagonicus group adding 37 new morphological characters and sequences of ND4. This mitochondrial marked was found quite informative in a previous study on the palluma group (Lobo et al., 2016) (also we included sequences of Cytb, 12S, four protein coding nuclear genes and seven anonymous nuclear loci that were recorded by Morando et al., 2013). This data set was built for almost all species recognized in the literature. In total 9962 bp and 243 morph characters were analyzed in a combined data set for 35 ingroup taxa and 9 outgroups. The total-evidence analysis was performed applying parsimony in TNT (Goloboff et al., 2003). We made a ?traditional search? applying TBR, with 10 000 replications (saving 20 trees per replication). Also separated runs of the molecular andmorphological data sets were done. We identified five main clades, congruencies and incongruences with previous studies are remarked. Biogeographical implications of these results are discussed taking into account recent geographical barriers proposed in Patagonia.
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