Browsing by Autor "Lucas S. Barrientos"

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EPIZOOCHORY IN DRY FOREST IGUANAS: AN OVERLOOKED SEED DISPERSAL MECHANISM?
(District University of Bogotá, 2015) Eloisa Lasso; Lucas S. Barrientos
La revista Colombia Forestal publica manuscritos originales en temáticas del campo forestal y diversos aspectos de los recursos naturales y del medio ambiente, los cuales se discriminan en las categorías de artículo de investigación, de revisión, de reflexión y notas técnicas de acuerdo con lo estipulado por COLCIENCIAS para las publicaciones científicas. De acuerdo a la clasificación de áreas científicas de la Organización para la Cooperación y el Desarrollo Económico (OCDE), la revista Colombia Forestal pertenece al gran área de Ciencias Agrícolas(4), área de Agricultura, Silvicultura y Pesca(4A) y a la disciplina Forestal (4A02).
Landscape genetics and species delimitation in the Andean Palm Rocket Frog (Aromobatidae, Rheobates).
(European Organization for Nuclear Research, 2020) Gabrielle Genty; Carlos E. Guarnizo; Juan P. Ramírez; Lucas S. Barrientos; Andrew J. Crawford
These contain all supporting data generated in the paper, entitled 'Landscape genetics and species delimitation in the Andean Palm Rocket Frog (Aromobatidae, Rheobates).' It includes DNA sequence alignments, phylogenetic trees, geographic coordinates, haplotype networks, and R script.
Landscape genetics and species delimitation in the Andean Palm Rocket Frog (Aromobatidae, Rheobates).
(European Organization for Nuclear Research, 2020) Gabrielle Genty; Carlos E. Guarnizo; Juan P. Ramírez; Lucas S. Barrientos; Andrew J. Crawford
These contain all supporting data generated in the paper, entitled 'Landscape genetics and species delimitation in the Andean Palm Rocket Frog (Aromobatidae, Rheobates).' It includes DNA sequence alignments, phylogenetic trees, geographic coordinates, haplotype networks, and R script.
One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
(2026) Adolfo Amézquita; Juan Manuel Daza; Leidy Alejandra Barragán Contreras; Catalina Orejuela; Lucas S. Barrientos; Luis A. Mazariegos
One more and one less: a new species of large bromelicolous lizard (Gymnophthalmidae: Anadia) from the Andean cloud forests of northwestern Colombia and the phylogenetic status of Anadia antioquensis
(2026) Adolfo Amézquita; Juan Manuel Daza; Leidy Alejandra Barragán Contreras; Catalina Orejuela; Lucas S. Barrientos; Luis A. Mazariegos
Untangling relationships among terraranan frogs: a phylogenomic approach based on 2,665 loci
(2019) Lucas S. Barrientos; Jeffrey W. Streicher; Elizabeth Christina Miller; Márcio R. Pie; John J. Wiens; Andrew J. Crawford
<title>Abstract</title> Background: Terraranae is a large clade of New World direct-developing frogs that includes 3–5 families and >1,000 described species, encompassing ~15% of all named frog species. The relationships among major groups of terraranan frogs have been highly contentious, including conflicts among three recent phylogenomic studies utilizing 95, 389, and 2,214 nuclear loci, respectively. In this paper, we re-evaluate relationships within Terraranae using a novel genomic dataset for 16 ingroup species representing most terraranan families and subfamilies. Results: The preferred data matrix consisted of 2,665 nuclear loci from ultraconserved elements (UCEs), with a total of 743,419 aligned base pairs and 57% missing data. Concatenated likelihood analyses and coalescent-based species-tree analyses both recovered strong statistical support for the following relationships among terraranan families: (Brachycephalidae, (Eleutherodactylidae, (Craugastoridae + “Strabomantidae”))). Our placement of Brachycephalidae agrees with two previous phylogenomic studies but conflicts with another. Our results place Strabomantis (of the Strabomantidae) with (or within) Craugastor (Craugastoridae) rather than with other strabomantid genera, rendering Strabomantidae paraphyletic with respect to Craugastoridae. Conclusions: Our results suggest that Strabomantidae should be placed in the synonymy of the older Craugastoridae. Furthermore, our results suggest that Pristimantinae is paraphyletic with respect to Holoadeninae and should be subsumed into the older Holoadeninae. We also found that using matrices of UCE loci with less missing data (and concomitantly fewer loci) generally decreased support for most nodes on the tree. Overall, our results help resolve controversial relationships within one of the largest clades of frogs, with a dataset containing ~7 times more loci than previous studies focused on this clade.