【摘要】 将采自中国云南的249尾原缨口鳅属鱼类标本以采集地分为13组,共测量20个常规性状,应用多变量形态度量学方法比较其形态差异。结果表明,全部标本可以水系分为3群,分别命名为澜沧江群、李仙江群和元江群。它们之间的差异系数均超过亚种水平的临界值(1.28),而且各群间的主成分分值散点间没有过渡中间类群。所以,3群应是3个不同的物种。根据原始文献描述的越南行政分区,推测李仙江分布的原缨口鳅属鱼类应为Vanmanenia tetraloba(Mai,1978),而元江分布的应为Vanmaneniastriata Chen(1980)。澜沧江中分布的原缨口鳅属鱼类标本以体型扁平、偶鳍宽大和头部骨骼小等特征组合区别于V.tetraloba和V.striata。经验证保存于中国科学院昆明动物研究所的唯一标本证实,采自禄劝掌鸠河的原缨口鳅属标本不是V.tetraloba,而应是平舟原缨口鳅V.pingchowensis。更多还原

【Abstract】 249 specimens of Vanmanenia from the Yunnan of China were divided into 13 groups according to localities, 20 general characteristics were measured when analyzed by the methods of multivariate morphometrics. The results showed that the specimens from the different localities could be divided into 3 groups according to drainages, named Lancangjiang Group, Lixiangjiang Group and Yuanjiang Group. The coefficient of difference was more than critical value (1.28) among 3 groups. And there was no mediacy in the scatter plots by principal component analysis among 3 groups. So 3 groups should be given status of 3 different species. It was inferred that specimens in Lixiangjiang Group should be Vanmanenia tetraloba (Mai, 1978) according to the administrative subarea of Vietnam in original description, and specimens in Yuanjiang Group should be V. striata Chen (1980). Specimens in Lancangjiang Group were distinguished from V. tetraloba and V. striata by the combination of characteristics, including compressed body, large pectoral and pelvic fins, small skull. It was confirmed that the specimen of Vanmanenia from Zhangjiuhe (a branch of Jinshajiang) in Luquan County is not V. tetraloba rather than V. pingchowensis after examined the one specimen kept in Kunming Institute of Zoology, the Chinese Academy of Sciences.更多还原