Data from: Phylogeography of the Trans-Volcanic bunchgrass lizard (Sceloporus bicanthalis) across the highlands of southeastern Mexico

We quantify the population divergence processes that shaped population
genetic structure in the Trans-Volcanic bunchgrass lizard (Sceloporus
bicanthalis) across the highlands of south-eastern Mexico. Multilocus
genetic data from nine nuclear loci and mitochondrial (mt)DNA were used to
estimate the population divergence history for 47 samples of
S. bicanthalis. Bayesian clustering methods partitioned S. bicanthalis
into three populations: (1) a southern population in Oaxaca and southern
Puebla; (2) a population in western Puebla; and (3) a northern population
with a broad distribution across Hidalgo, Puebla, and Veracruz. The
multilocus nuclear data and mtDNA both supported a Late Pleistocene
increase in effective population size, and the nuclear data revealed low
levels of unidirectional gene flow from the widespread northern population
into the southern and western populations. Populations of S. bicanthalis
experienced different demographic histories during the Pleistocene, and
phylogeographical patterns were similar to those observed in many
co-distributed highland taxa. Although we recommend continuing to
recognize S. bicanthalis as a single species, future research on the
evolution of viviparity could gain novel insights by contrasting
physiological and genomic patterns among the different populations located
across the highlands of south-eastern Mexico.