ORCID Profile
0000-0003-1971-7469
Current Organisation
Pontificia Universidad Javeriana
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Publisher: Hindawi Limited
Date: 09-02-2022
DOI: 10.1155/2022/6774225
Abstract: The complex topography of the species-rich northern Andes creates heterogeneous environmental landscapes that are hypothesized to have promoted population fragmentation and ersification by processes such as vicariance or local adaptation. Previous phylogenetic work on the palm rocket frog (Anura: Aromobatidae: Rheobates spp.), endemic to midelevation forests of Colombia, suggested that valleys were important in promoting ergence between lineages. In this study, we first evaluated previous hypotheses of species-level ersity, then fitted an isolation-with-migration (IM) historical demographic model, and tested two landscape genetic models to explain genetic ergence within Rheobates: isolation by distance and isolation by environment. The data consisted of two mitochondrial and four nuclear genes from 24 s les covering most of the geographic range of the genus. Species delimitation by Bayesian Phylogenetics and Phylogeography recovered five highly ergent genetic lineages within Rheobates, among which few to no migrants are exchanged according to IM. We found that isolation by environment provided the only variable significantly correlated with genetic distances for both mitochondrial and nuclear genes, suggesting that local adaptation may have a role in driving the genetic ergence within this frog genus. Thus, genetic ergence in Rheobates may be driven more by variation among the local environments where these frogs live rather than by geographic distance.
Publisher: Magnolia Press
Date: 31-07-2019
DOI: 10.11646/ZOOTAXA.4648.3.8
Abstract: The frogs of the genus Pristimantis are recognized for their characteristic reproductive mode and for their incredible ersity of species, becoming the genus with the highest number of species within tetrapod vertebrates. We describe here a new species of Pristimantis from the northwestern Andes of Colombia. The species was found between 2000-2500 m.a.s.l., mostly within moss hanging of tree branches in a tropical cloud forest. It can be easily distinguished from other Pristimantis species of the western Andes by the unique black and white patterning in the ventral surface and the flanks, the hourglass-shaped dorsal folds, and the prominent conical tubercles on eyelids, heels, and outer edge of tarsus. A phylogenetic analysis further supports its status of a lineage reciprocally monophyletic to P. satagius and separated by a genetic distance of 0.03 the latter species bear whitish rather than predominantly black ventral coloration. To the best of our knowledge, this species is only known from the 2,500 ha nature reserve Mesenia-Paramillo, despite other research on this area of the country. Therefore, the species is declared vulnerable while new evidence on its distribution range is accumulated.
No related grants have been discovered for Lucas Barrientos.