中国巨松鼠Ratufa bicolor(Sciuridae:Ratufinae)头骨形态的地理学变异  

Geographic variation in giant squirrels Ratufa bicolor (Sciuridae:Ratufinae) from China based on cranial measurable variables

作　　者：李松[1] 杨君兴[1] 蒋学龙[1] 王应祥[1] 

机构地区：[1]中国科学院昆明动物研究所,昆明650223

出　　处：《兽类学报》2008年第2期201-206,共6页Acta Theriologica Sinica

基　　金：云南省运用基础研究计划面上项目(2007C099M);国家重点基础研究发展计划资助项目(2007CB411600);国家自然科学基金资助项目(DEB-0103795);(30370194)

摘　　要：巨松鼠(Ratufa bicolor)是东洋界的特有类群。中国仅有一种,分布于海南、广西西南部、云南南部、西南部、西部和西北部,关于其亚种的分化结论过去主要依据其皮毛的颜色特征。本研究共测取75个巨松鼠头骨,每号头骨标本测取23个变量,运用统计分析软件SPSS11.0对巨松鼠的可测量变量进行主成分分析、判别分析及聚类分析,以探讨巨松鼠各亚种地位的有效性及其头骨形态的地理学变异。研究结果显示阿萨姆亚种R.b.gigantea和海南亚种R.b.hainana均为有效亚种,前者分布自广西西南部向西经云南南部、西南部、西部达西北部,后者分布于海南。同时,本研究结果不支持滇南亚种R.b.stigmosa作为一个有效的亚种。Giant squirrels （Ratufa bicolor） are an endemic group in the Indomalayan Region. Only one species of the giant squirrel occurs in China, and is distributed in Hainan Province, southwestern Guangxi Province, southern, southwestern, western , and northwestern Yunnan Province. Subspecies differentiation of the species used to be determined by their pelage characteristics. In this study, we obtained data on 23 cranial variables from 75 specimens. Principal component analyses , discriminant analysis, and cluster analysis were performed to discuss the validity of each subspecies and their geographic variation. Our results indicated that R. b. gigantea and R. b. hainana are all valid subspecies, the former ranging from southwestern Guangxi Province to southern, southwestern, western, and northwestern Yunnan Province, and the latter occurring in Hainan Province. However, our results did not support R. b. stigmosa as a valid subspecies of R. bicolor.

关 键 词：巨松鼠 亚种分化 中国 分类 

分 类 号：Q959[生物学—动物学]