| testing pleistocene refugia theory: phylogeographical analysis of desmognathus wrighti, a high-elevation salamander in the southern appalachians. | during the colder climates of the pleistocene, the ranges of high-elevation species in unglaciated areas may have expanded, leading to increased gene flow among previously isolated populations. the phylogeography of the pygmy salamander, desmognathus wrighti, an endemic species restricted to the highest mountain peaks of the southern appalachians, was examined to test the hypothesis that the range of d. wrighti expanded along with other codistributed taxa during the pleistocene. analyses of gene ... | 2003 | 12753216 |
| phylogeny of mental glands, revisited. | mental glands and their associated delivery behaviors during courtship are unique to the plethodontid salamanders. because previous interpretations of the evolution of these features were conducted using older phylogenetic hypotheses, we reanalyzed these traits with newer courtship descriptions and contemporary phylogenetic methods. using bayesian ancestral state reconstruction methods that have been developed since the first phylogenetic analyses were conducted in the mid-1990s, we reconstructe ... | 2016 | 30034038 |