摘要
采用贝叶斯法对棕黑疣螈种组13个个体的线粒体DNA ND2基因重建了系统发育关系,结果表明,(1)该种组物种形成1个单系群;(2)红瘰疣螈不是棕黑疣螈的同物异名,支持红瘰疣螈物种地位的有效性;(3)采自云南省红河州屏边县大围山的2个标本与红瘰疣螈亲缘关系较近,并构成姐妹群,其种间遗传距离已达到种级水平。其地理居群物种为一未描述新种,定名为大围山疣螈。新种的主要鉴别特征为,前肢长于后肢或后肢略长;头部和前后臂为棕黑色,颞部和指、趾端为棕黄色。
Bayesian inference method is used to reconstruct molecular phylogenetic tree of the mitochondrial DNA ND2 gene of thirteen individuals of Tylototriton verrucosus group.The results show that：（1） Tylototriton verrucosus group is monophyletic.（2） T.shanjing is not a synonym of T.verrucosus but supported as a valid species.（3）Two specimens collected from Dawei Mount,Pingbian County,Yunnan Province are more closely related to T.shanjing.Above two species form a sister group and their interspecific genetic distance has reached a species level.Therefore,the species of the geographic population is recognized as a new species,named as Tylototriton daweishanensis sp.nov.The identification characters are： its forelimbs are longer than the hind limbs,brown black head,forearms and postbrachiums,orange temporal,fingers and toes.
出处
《西部林业科学》
CAS
北大核心
2012年第5期85-89,共5页
Journal of West China Forestry Science
关键词
棕黑疣螈种组
系统发育
大围山疣螈
红瘰疣螈
新种
Tylototriton verrucosus group
molecular phylogeny
Tylototriton daweishanensis sp.nov.
Tylototriton shanjing
new species
