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PLoS One. 2018 Mar 9;13(3):e0191598. doi: 10.1371/journal.pone.0191598. eCollection 2018.

On geographic barriers and Pleistocene glaciations: Tracing the diversification of the Russet-crowned Warbler (Myiothlypis coronata) along the Andes.

Author information

1
Master Oficial en Biodiversidad en Áreas Tropicales y su Conservación. Universidad Internacional Menéndez Pelayo, Madrid, España.
2
Eje BioCiencias, Centro de Modelado Científico de la Universidad del Zulia (CMC-LUZ), Facultad Experimental de Ciencias. Calle 65 con Av. Universidad, sector Grado de Oro, Estado Zulia, Maracaibo, Venezuela.
3
Department of Biological Sciences and Museum of Natural Science, Louisiana State University, Baton Rouge, Louisiana, United States of America.
4
Instituto BIOSFERA and Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, vía Interoceánica y Diego de Robles, Quito, Ecuador.
5
Centro de Investigación de la Biodiversidad y Cambio Climático, Universidad Tecnológica Indoamérica, Machala y Sabanilla, Quito, Ecuador.

Abstract

We studied the phylogeography and plumage variation of the Russet-crowned Warbler (Myiothlypis coronata), from Venezuela to Bolivia, with focus on populations from Ecuador and northern Peru. We analyzed sequences of mitochondrial and nuclear genes, geographic distributions, as well as photographs of specimens deposited at museum collections. Phylogenetic analyses identified three major lineages formed by populations from: Venezuela and Colombia (M. c. regulus), Ecuador and northern Peru (M. elata, M. castaneiceps, M. orientalis, M. c. chapmani), and central Peru and Bolivia (M. c. coronata). We found further population structure within M. c. regulus and M. c. coronata, and population structure and complexity of plumage variation within the Ecuador-northern Peru lineage. Time-calibrated trees estimated that most intraspecific variation originated during the Pleistocene; however, this pattern may not be attributed to an increase in diversification rate during that period. We discuss these results in the context of the importance of geographic-ecological barriers in promoting lineage diversification along the Andes and put forward a preliminary taxonomic proposal for major lineages identified in this study.

PMID:
29522515
PMCID:
PMC5844518
DOI:
10.1371/journal.pone.0191598
[Indexed for MEDLINE]
Free PMC Article

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