Out of Amazonia again and again: Episodic crossing of the Andes promotes diversification in a lowland forest flycatcher
Document Type
Article
Publication Date
5-2008
Publication Title
Proceedings of the Royal Society B
Publisher
Royal Society Publishing
Volume
275
Issue
1639
First page number:
1133
Last page number:
1142
Abstract
Most Neotropical lowland forest taxa occur exclusively on one side of the Andes despite the availability of appropriate habitat on both sides. Almost all molecular phylogenies and phylogenetic analyses of species assemblages (i.e. area cladograms) have supported the hypothesis that Andean uplift during the Late Pliocene created a vicariant barrier affecting lowland lineages in the region. However, a few widespread plant and animal species occurring in lowland forests on both sides of the Andes challenge the generality of this hypothesis. To understand the role of the Andes in the history of such organisms, we reconstructed the phylogeographic history of a widespread Neotropical flycatcher (Mionectes oleagineus) in the context of the other four species in the genus. A molecular phylogeny based on nuclear and mitochondrial sequences unambiguously showed an early basal split between montane and lowland Mionectes. The phylogeographic reconstruction of lowland taxa revealed a complex history, with multiple cases in which geographically proximate populations do not represent sister lineages. Specifically, three populations of M. oleagineus west of the Andes do not comprise a monophyletic clade; instead, each represents an independent lineage with origins east of the Andes. Divergence time estimates suggest that at least two cross-Andean dispersal events post-date Andean uplift.
Keywords
Cladistic analysis; Flycatchers; Mionectes; Neotropics; Phylogeography
Controlled Subject
Bird populations--Research; Molecular genetics; Phylogeography
Disciplines
Molecular Genetics | Ornithology | Population Biology
File Format
File Size
218 KB
Language
English
Permissions
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Rights
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Repository Citation
Miller, M. J.,
Bermingham, E.,
Klicka, J.,
Escalante, P.,
Raposo do Amaral, F. S.,
Weir, J. T.,
Winker, K.
(2008).
Out of Amazonia again and again: Episodic crossing of the Andes promotes diversification in a lowland forest flycatcher.
Proceedings of the Royal Society B, 275(1639),
1133-1142.
Available at: