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Phylogeography of the Rufous Vanga and the role of bioclimatic transition zones in promoting speciation within Madagascar

Citation

Younger, JL and Dempster, P and Nyari, AS and Helms, TO and Raherilalao, MJ and Goodman, SM and Reddy, S, Phylogeography of the Rufous Vanga and the role of bioclimatic transition zones in promoting speciation within Madagascar, Molecular Phylogenetics and Evolution, 139 Article 106535. ISSN 1055-7903 (2019) [Refereed Article]

Copyright Statement

© 2019 Elsevier Inc.

DOI: doi:10.1016/j.ympev.2019.106535

Abstract

Madagascar is known as a biodiversity hotspot, providing an ideal natural laboratory for investigating the processes of avian diversification. Yet, the phylogeography of Madagascarís avifauna is still largely unexamined. In this study, we evaluated phylogeographic patterns and species limits within the Rufous Vanga, Schetba rufa, a monotypic genus of forest-dwelling birds endemic to the island. Using an integrative taxonomic approach, we synthesized data from over 4000 ultra-conserved element (UCE) loci, mitochondrial DNA, multivariate morphometrics, and ecological niche modeling to uncover two reciprocally monophyletic, geographically circumscribed, and morphologically distinct clades of Schetba. The two lineages are restricted to eastern and western Madagascar, respectively, with distributions broadly consistent with previously described subspecies. Based on their genetic and morphological distinctiveness, the two subspecies merit recognition as separate species. The bioclimatic transition between the humid east and dry west of Madagascar likely promoted population subdivision and drove speciation in Schetba during the Pleistocene. Our study is the first evidence that an East-West bioclimatic transition zone played a role in the speciation of birds within Madagascar.

Item Details

Item Type:Refereed Article
Keywords:vangidae, phylogenetics, ecological niche modelling, passeriformes, diversification
Research Division:Biological Sciences
Research Group:Evolutionary biology
Research Field:Biogeography and phylogeography
Objective Division:Environmental Management
Objective Group:Terrestrial systems and management
Objective Field:Terrestrial biodiversity
UTAS Author:Younger, JL (Dr Jane Younger)
ID Code:153683
Year Published:2019
Web of Science® Times Cited:4
Deposited By:Ecology and Biodiversity
Deposited On:2022-10-01
Last Modified:2022-11-28
Downloads:0

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