Biodiversity Institute, Department of Ecology and Evolutionary Biology, University of Kansas, Dyche Hall, 1345 Jayhawk Blvd., Lawrence, KS 66045, USA.
Mol Phylogenet Evol. 2012 Nov;65(2):799-804. doi: 10.1016/j.ympev.2012.07.029. Epub 2012 Aug 2.
The Philippines is characterized by a high rate of endemism among its terrestrial vertebrates, including enigmatic genera with uncertain affinities. In a recent comprehensive study of the avian family of Timaliidae (babblers), it was shown that three putative babbler genera endemic to the Philippines (Leonardina, Robsonius, and Micromacronus) are distant relatives of Timaliidae. With additional DNA sequences from new samples and data from Genbank, we attempt to determine the phylogenetic affinities of these three genera and examine the resulting implications for biogeography and avian endemism in the Philippines. Well-supported phylogenies recover the three genera in three different families spanning the sylvioid and muscicapoid radiations of passerine birds. Leonardina groups with Muscicapidae and is most closely related to other isolated montane endemic species in Southeast Asia. Robsonius appears to be an early offshoot of Locustellidae. Micromacronus belongs in Cisticolidae, but its position in the family is unresolved. Contrary to implications based on traditional taxonomy, the Philippine archipelago appears to have played a minor role in the diversification of babblers.
菲律宾的陆地脊椎动物具有很高的特有率，其中包括亲缘关系不确定的神秘属。在最近对山椒鸟科（画眉科）鸟类的综合研究中，表明菲律宾特有的三种拟画眉属（Leonardina、Robsonius 和 Micromacronus）是山椒鸟科的远亲。我们利用来自新样本的额外 DNA 序列和来自 Genbank 的数据，试图确定这三个属的系统发育亲缘关系，并探讨它们对菲律宾生物地理学和鸟类特有性的影响。支持良好的系统发育树将这三个属分别归为三个不同的科，涵盖了雀形目鸟类的 sylvioid 和 muscicapoid 辐射。Leonardina 与 Muscicapidae 一起，与东南亚其他孤立的山地特有种关系最密切。Robsonius 似乎是 Locustellidae 的早期分支。Micromacronus 属于 Cisticolidae，但在科内的位置尚未解决。与基于传统分类学的推论相反，菲律宾群岛在画眉科的多样化中似乎只扮演了次要角色。
