Origin and diversification of Philippine bulbuls
Issue Date
2009-04-28Author
Oliveros, Carl Hirang
Publisher
University of Kansas
Format
45 pages
Type
Thesis
Degree Level
M.A.
Discipline
Ecology & Evolutionary Biology
Rights
This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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Show full item recordAbstract
We examine the origin and diversification of Philippine bulbuls using a phylogenetic framework. We used maximum likelihood and Bayesian methods to construct trees from DNA sequences of two mitochondrial and two nuclear genes obtained from 11 Philippine bulbul species as well as 32 other Asian and African taxa. We found eight independent colonization events of bulbuls to the Philippines, including one clade comprising Philippine members of the genus Ixos that underwent extensive diversification within the archipelago. Each Philippine clade of bulbuls invaded either the Palawan region or the oceanic islands of the Philippines, but not both. Genetic data reveal at least 5 lineages that warrant recognition as full species. This study underscores how Philippine avian diversity is currently underestimated and highlights the need for further phylogenetic studies in other Philippine bird groups.
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