雪鸡属分类地位探讨  

PHYLOGENETIC RELATIONSHIPS OF TETAOGALLUS

作　　者：阮禄章[1] 文陇英[2] 张立勋[3] 刘发[3] 

机构地区：[1]南昌大学生命科学学院,江西南昌330031 [2]乐山师范学院化学与生命科学系,四川乐山614004 [3]兰州大学生命科学学院,甘肃兰州730000

出　　处：《动物分类学报》2009年第1期73-78,共6页Acta Zootaxonomica Sinica

基　　金：国家自然科学基金(30170138);国家自然科学基金重点项目(30530130)资助

摘　　要：以5种鸡形目鸟类,包括4个藏雪鸡Tetraogallus tibetanus、12个喜玛拉雅雪鸡T.himalayensis、1个阿尔泰雪鸡T.altaicus、1个石鸡Alectoris chuckar和1个斑翅山鹑Perdix dauurica为材料。通过PCR扩增线粒体细胞色素b基因513个碱基,同时从Gen Bank下载25种鸡形目鸟类细胞色素b基因序列,通过对鸡形目24个属线粒体细胞色素b基因序列的分析,结果表明共有214个变异位点,简约信息位点184个。以鸿雁Anser cygnoides为外群,在运用不同分析方法得到的拓扑结构基础上,构建了最大简约树(MP)和最大似然树(ML),结果表明鸡形目鸟类鹑族和雉族基本上是多系发生的。结合分子钟和遗传信息分析,可以得出雪鸡属在鹑族中形成的时间相对较晚,约在14.6Myr出现石鸡属的祖先种群;而在约12.6Myr雪鸡属和鹌鹑属开始出现。雪鸡属的祖先是起源于低海拔环境,后来伴随着青藏高原的逐渐隆起和更新世冰期事件的发生各自演化形成现今各个种。In total,513bp nucleotides in the mitochondria DNA cytochrome b gene had been sequenced in Galliformes including 4 T.tibetanus,12 T.himalayensis,1 T.altaicus,1 A.chuckar and 1 P.dauurica by PCR and 25 species of Galliformes from GenBank.The results indicated there were 214 variable sites and 184 parsim-info sites in 40 samples of Galliformes mitochondria DNA cytochrome b gene part sequences.Using Anser cygnoides as outgroup,there were polyphyletic in species of Perdicini or Phasianini from phylogenetic trees based on Maximum Parsimony（MP）and Maximum Likelihood（ML）methods.According to molecular clock and genetics information of Galliformes,we concluded that the Alectoris ancestor diverged from the Tetraogallus and Coturnix ancestors in 14.6Myr,and then the latter divided into two respective genus in 12.6Myr.The Tetraogallus ancestor originally inhabited in vast some lower latitude,subsequently,evolved to the nowadays different species along with the lift of Tibet-Qinghai Plateau and the glaciation in Pleistocene.

关 键 词：雪鸡属 细胞色素B 系统发育 多系发生 

分 类 号：Q959[生物学—动物学]