A New Species of the Genus Garra from Nujiang River Basin, Yunnan, China (Teleostei: Cyprinidae)  

中国怒江流域墨头鱼属鱼类一新种(鲤形目:鲤科)(英文)

作　　者：陈自明[1,2] 赵晟[3] 杨君兴[2] 

机构地区：[1]云南大学生命科学学院,昆明650091 [2]中国科学院昆明动物研究所,昆明650221 [3]云南省环境科学研究院,昆明650034

出　　处：《Zoological Research》2009年第4期438-444,共7页动物学研究（英文）

基　　金：国家自然科学基金(40601096;30870291;30730017);国家重点基础研究发展计划(九七三计划)项目(2003CB415105);云南大学理(工)科校级科研项目(2008YB004)

摘　　要：A new species of the subfamily Labeoninae, Garra nujiangensis Chen and Yang, sp. nov. is recognized from a secondary branch of Nujiang River （upper Salween） in Zhenkang county, Yunnan province, China. It can be distinguished from other beardless Garra species by the following combination of characters： 12 - 14 circumpedunele scales; 48 - 50 lateral- line scales; a pair of rudimentary rostral barbels present in little individuals; 8 - 9 branched dorsal-fin rays; 5 - 6 scales between dorsal-fin origin and lateral line and 3 - 4 scales between pelvic-fin origin and lateral line; caudal peduncle relatively stouter; length between snout tip to posterior margin of eye longer than body depth at anal fin origin; head length longer than body depth at dorsal fin origin; prepelvic length 50.0% - 53.7% of standard length; pre-anus length 58.9% - 63.9% of standard length; body width 16.7% - 19.6% of standard length; body depth at dorsal fin 19.2% - 22.6% of standard length. The present study also verified that the presence of tiny barbells is a juvenile character in some beardless Garra species, such as G. nujiangensis and G. alticorpora.2003年4月,于怒江二级支流镇康县境内的大叉河中采获一批墨头鱼属(Garra)鱼类标本,经鉴定为一新种,命名为怒江墨头鱼(G. nujiangensis Chen and Yang, sp. nov.)。该新种主要鉴别特征:围尾柄鳞12～14;侧线鳞48～50;在小个体中有一对微小的吻须;背鳍分支鳍条8～9;侧线上鳞5～6,侧线下鳞3～4;体高小于头长;臀鳍起点处的小于眼后至吻端的距离;腹鳍前长为体长的50.0%～53.7%;肛门前长为体长的58.9%～63.9%;体宽为体长的16.7%～19.6%;体高为体长的19.2%～22.6%。本研究证实,在缺须的墨头鱼属的一些物种中,如高体墨头鱼(G. alticorpora)和怒江墨头鱼(G. nujiangensis),其幼体中往往具有一对很小的吻须。

关 键 词：Garra CYPRINID New species YUNNAN 

分 类 号：Q959.468[生物学—动物学] Q959.468.09