Geographic isolation drives divergence of uncorrelated genetic and song variation in the Ruddy-capped Nightingale-Thrush (Catharus frantzii; Aves: Turdidae)

[Display omitted] •We reconstructed the phylogeographic history of Catharus frantzii.•We examined patterns of vocal variation in relation with genetic divergence.•We found support for the existence of four mitochondrial lineages corresponding to isolated mountain ranges.•Vocal features varied among...

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Bibliographic Details
Published in:Molecular phylogenetics and evolution 2016-01, Vol.94 (Pt A), p.74-86
Main Authors: Ortiz-Ramírez, Marco F., Andersen, Michael J., Zaldívar-Riverón, Alejandro, Ornelas, Juan Francisco, Navarro-Sigüenza, Adolfo G.
Format: Article
Language:English
Subjects:
Acoustics
Altitude
Animals
Bayes Theorem
Biological Evolution
Catharus
Central America
DNA, Mitochondrial - genetics
Female
Forests
Genetic Variation
Likelihood Functions
Male
Mesoamerica
Mexico
Phenotype
Phylogeny
Phylogeography
Song variation
Songbirds - classification
Songbirds - genetics
Songbirds - physiology
Vocalization, Animal - physiology
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Summary:[Display omitted] •We reconstructed the phylogeographic history of Catharus frantzii.•We examined patterns of vocal variation in relation with genetic divergence.•We found support for the existence of four mitochondrial lineages corresponding to isolated mountain ranges.•Vocal features varied among the four observed clades and even serve to discriminate between them. Montane barriers influence the evolutionary history of lineages by promoting isolation of populations. The effects of these historical processes are evident in patterns of differentiation among extant populations, which are often expressed as genetic and behavioral variation between populations. We investigated the effects of geographic barriers on the evolutionary history of a Mesoamerican bird by studying patterns of genetic and vocal variation in the Ruddy-capped Nightingale-Thrush (Turdidae: Catharus frantzii), a non-migratory oscine bird that inhabits montane forests from central Mexico to Panama. We reconstructed the phylogeographic history and estimated divergence times between populations using Bayesian and maximum likelihood methods. We found strong support for the existence of four mitochondrial lineages of C. frantzii corresponding to isolated mountain ranges: Sierra Madre Oriental; Sierra Madre del Sur; the highlands of Chiapas, Guatemala, and El Salvador; and the Talamanca Cordillera. Vocal features in C. frantzii were highly variable among the four observed clades, but vocal variation and genetic variation were uncorrelated. Song variation in C. frantzii suggests that sexual selection and cultural drift could be important factors driving song differentiation in C. frantzii.
ISSN:1055-7903
1095-9513
DOI:10.1016/j.ympev.2015.08.017