【摘要】 采用分子系统学方法对鸫亚科(Turdinae)16属35种鸟类的线粒体细胞色素b基因进行系统发生分析。所测序列经对位排列后共983bp,包含变异位点399个,简约信息位点349个。以太平鸟(Bombycillagarrulus)和雪松太平鸟(Bombycillacedrorum)为外群,采用邻接法、最大简约法、最大似然法和贝叶斯法分别构建鸫亚科的系统发生树。研究结果表明:构建的系统树将所研究鸫亚科鸟类分为2个支系。第1个支系包括鸫属(Turdus)、地鸫属(Zoothera)和宽嘴鸫属(Cochoa);第2个支系包括歌鸲属(Luscinia)、鸲属(Tarsiger)、鹊鸲属(Copsychus)、薮鸲属(Cercotrichas)、红尾鸲属(Phoenicurus)、水鸲属(Rhyacornis)、燕尾属(Enivurus)、啸鸫属(Myiophoneus)、石属(Saxicola)、属(Oenanthe)、溪鸲属(Chaimarrornis)、矶鸫属(Monticola)和欧亚鸲属(Erithacus)。其中地鸫属并非单系类群;红尾鸲属为并系发生,水鸲属和溪鸲属归并到这一支系;石属与矶鸫属互为姐妹群,再与属聚合构成另一支系;然后上述两个支系构成姐妹群;歌鸲属和鸲属聚成姐妹群。对于鹊鸲属、薮鸲属、啸鸫属、欧亚鸲属、宽嘴鸫属和燕尾属,本研究结果并没有完全解决它们在大分支内与其它属间的亲缘关系更多还原

【Abstract】 The phylogeny of Turdinae species(Passeriformes,Muscicapidae)remains controversial.In this study,we investigated phylogenetic relationships within this subfamily based on analysis of mitochondrial cytochrome b gene sequences.35 species representing 16 of 20 putative Turdinae genera from Turdinae were analyzed,and Bombycilla garrulous and Bombycilla cedrorum were selected as outgroups.Altogether 983 bp gene fragments from these species were obtained,in which 399 variable sites and 349 parsimony informative sites were identified.Neighbor-joining(NJ),maximum parsimony(MP),maximum-likelihood(ML)and Bayesian(BI)analyses generated nearly identical tree topologies.In the phylogenetic trees,the species examined in the study are clustered into two clades,which are almost consistent with morphological classification.The first clade included Turdus,Zoothera and Cochoa.The second clade included Phoenicurus,Chaimarrornis,Oenanthe,Rhyacornis,Monticola,Saxicola,Erithacus,Tarsiger,Enivurus,Luscinia,Myiophoneus,Copsychus and Cercotrichas.Genus Zoothera was not a monophyletic taxon and genus Phoenicurus was paraphyletic forming a well supported clade with the addition of two monotypic genera(Rhyacornis and Chaimarrornis).The genus Monticola was sister to Saxicola first,and then clustered with Oenanthe,which indicates that Monticola is more closely related to the chat than the thrush.With regard to some genera such as Erithacus,Tarsiger,Enivurus,Luscinia,Myiophoneus,Copsychus and Cercotrichas in the second clade,phylogenetic relationships are still uncertain更多还原