Journal
MOLECULAR PHYLOGENETICS AND EVOLUTION
Volume 144, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2019.106725
Keywords
Matuasto; Leiosauridae; Plio-Pleistocene; Speciation; Conservation; Patagonia
Funding
- ANPCYT-FONCYT [PICT 506/2006, 1397/2011, 1252/2015]
- PIP-CONICET [0336/13]
- UNPSJB 2015
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
- NSF-PIRE award [OISE 0530267]
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The Glade Leiosaurae is composed of poorly-known species endemic to the southern region of South America. The difficulties of finding these lizards in the field, and their highly conserved morphology, have limited our taxonomic knowledge and understanding of their evolutionary histories. Here, we use data collected over 9 years to study the phylogenetic history, genetic diversity, and biogeographic history of almost all the southernmost species of Leiosaurae (except P. nigroigulus), including: Leiosaurus bellii, Diplolaemus darwinii, D. bibronii, D. sexcinctus and D. leopardinus. We use a fragment of the mitochondrial cytochrome-b gene to resolve general phylogeographic patterns, and add another mitochondrial gene and eight nuclear genes to perform species delimitation and phylogenetic analyses associated with divergence times. We found evidence for three putative new species-level taxa within L. bellii and five within Diplolaemus species, indicating high levels of geographic structure. We use a time-calibrated phylogeny to estimate ranges of ancestral distributions and to generate new hypotheses about their historical biogeography.
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