Phylogenomics and species delimitation of a complex radiation of Neotropical suboscine birds (Pachyramphus)
| Autor: | Lukas J. Musher, Joel Cracraft |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Argentina Biology Subspecies DNA Mitochondrial 010603 evolutionary biology 01 natural sciences Coalescent theory 03 medical and health sciences Species Specificity Genus Phylogenomics Genetics Animals Passeriformes Mexico Molecular Biology Phylogeny Ecology Evolution Behavior and Systematics Likelihood Functions Tropical Climate Base Sequence Phylogenetic tree Ecology Species diversity Bayes Theorem Genomics Phylogeography 030104 developmental biology Taxon Genetic Loci Evolutionary biology |
| Zdroj: | Molecular Phylogenetics and Evolution. 118:204-221 |
| ISSN: | 1055-7903 |
| Popis: | Phylogeographic studies within the Neotropics continue to uncover hidden diversity, the extent of which remains poorly known. In birds, molecular studies are producing evidence that species-level diversity is substantially underestimated. Many avian taxa comprise large complexes of subspecies that often represent species-level taxa by various criteria. One such group of Neotropical suboscine birds, the becards (Pachyramphus), ranges from Argentina through northern Mexico. Their taxonomic limits have been complex and controversial as the genus has bounced around a number of suboscine families. Additionally, the phylogenetic relationships within Pachyramphus are unresolved due to insufficient sampling of taxa and populations across species’ ranges. We used target capture of ultraconserved elements for 62 individuals representing 42 taxa, and sequenced two mitochondrial genes and two nuclear introns covering 265 individuals of 51 taxa, including all recognized species, resulting in the most densely and completely sampled phylogenetic hypothesis for Pachyramphus to date. We delimited species using a traditional taxonomic approach and then tested them under a Bayesian multi-species coalescent framework. In doing so, we provide evidence for multiple young, previously undetected evolutionary lineages within Pachyramphus. Deep, well-supported branches and a high number of intraspecific lineages across the tree suggest that at least 50% of species diversity may be unrecognized. |
| Databáze: | OpenAIRE |
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