Molecular Systematics Laboratory, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden.
Mol Phylogenet Evol. 2010 Jun;55(3):901-10. doi: 10.1016/j.ympev.2010.01.009. Epub 2010 Jan 15.
We investigated the phylogenetic relationships within the Monticola rock-thrushes, an open-habitat genus inhabiting a large part of the Old World. Our results support one Oriental clade and one clade including African, Malagasy and Eurasian taxa. The biogeographic reconstruction obtained with the dispersal-vicariance analysis suggested Southern Africa plus Palearctic as the Monticola ancestral area. Our phylogenetic hypothesis suggests also some taxonomic changes. The polytypic Monticola solitarius includes two reciprocally monophyletic clades that should be recognized as full species, M. solitarius s.s. and M. philippensis. With the exclusion of the south-western population, M. imerinus, all other Malagasy rock-thrush populations should be merged in the monotypic, albeit polymorphic, M. sharpei. The genus Thamnolaea is shown to be non-monophyletic, with T. semirufa being part of the Monticola radiation, while T. cinnamomeiventris is related to other chat species inhabiting open-habitats. We demonstrate that a previous phylogenetic hypothesis for the rock-thrushes was flawed by the inclusion of contaminated sequences obtained from study-skins and we suggest some working guidelines to improve the reliability of the sequences obtained from old or degraded DNA.
我们研究了栖息在旧大陆大部分地区的开阔生境的山雀属鸟类内部的系统发育关系。我们的研究结果支持一个东洋分支和一个包括非洲、马达加斯加和欧亚分类群的分支。扩散-分歧分析得到的生物地理重建表明，南非加上古北地区是山雀属的祖先地区。我们的系统发育假说还提出了一些分类学变化。多型的山雀包括两个相互单系的分支，应该被认定为完整的物种，即山雀 s.s.和山雀 philippensis。排除西南部的种群，山雀 imerinus，所有其他马达加斯加的山雀种群都应该合并为单型的，尽管是多态的，山雀 sharpei。山雀属被证明是不单系的，山雀 semirufa 是山雀辐射的一部分，而山雀 cinnamomeiventris 与其他栖息在开阔生境的雀形目物种有关。我们证明，以前的山雀系统发育假说因包含了从研究皮肤中获得的污染序列而存在缺陷，我们提出了一些工作准则，以提高从旧的或降解的 DNA 中获得的序列的可靠性。
