高原特有条鳅鱼类两新种在广西的发现及其动物地理学意义

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	高原特有条鳅鱼类两新种在广西的发现及其动物地理学意义
	杨君兴 1; 陈小勇 1; 蓝家湖 2
刊名	动物学研究
	2004
卷号	25 期号:2 页码:111-116
关键词	广西条鳅亚科新种动物地理
其他题名	Occurrence of Two New Plateau-indicator Loaches of Nemacheilinae ( Balitoridae) in Guangxi with Reference to Zoogeographical Significance
合作状况	其它
中文摘要	描述了采自广西都安县红水河水系的条鳅亚科鱼类 2个新种 :丽纹云南鳅Yunnaniluspulcherrimussp nov .在侧线长度、鳞片分布、鳍条数目、尾型、吻须长度等方面与侧纹云南鳅Yunnaniluspleurotaenia (Re gan ,190 4 )最为相似 ,但新种独特的斑纹和上下唇的长乳突可明显与之区别 ,二者在一些度量特征上也有区别。黄体高原鳅Triplophysaflavicorpussp nov 与同分布于西江水系的南丹高原鳅T .nandanensisLanetal 较为相似 ,并以下列特征组合与高原鳅属所有已知种相区别 :背鳍分枝鳍条 10根、臀鳍分枝鳍条 6～ 7根、体被细鳞、侧线完全、具 6条宽横斑和 1条沿侧线的细纵纹、尾鳍深分叉、尾鳍基具 1半圆形黑斑、尾鳍上下叶各具2条黑色横斑、腹鳍末端后伸超过肛门、腋部具发达的肉质鳍瓣、上唇中央完全中断等。云南鳅属和高原鳅属均是高原特有类群 ,前者仅分布于云南东中部地区 ,后者则集中分布于青藏高原。两个新种的分布地均远离这两个属的分布中心 ,而且呈间断分布。通过各自相近种谱系关系分析 ,推测这种特殊的分布格局是通过隔域分化形成的。
英文摘要	Two new loaches of subfamily Nemacheilinae have been recognized on basis of collections from Hongshui 2 he River , a tributary of Xijiang in Du π an County , Guangxi , China. All type specimens of Yunnanilus pulcherrimus sp. nov. (Holotype : KIZ 995001 , 39 1 6 mm SL) were collected from an underground river , and had diagnosis characters : dorsal 2 fin 3 , 8 - 9 (occasionally 3 , 9) ; anal 2 fin 3 , 5 - 6 (occasionally 3 , 6) ; pectoral 2 fin 1 , 8 - 10 ; pelvic 2 fin 1 , 6 - 7 (occasionally 1 , 6) ; branched caudal 2 fin rays 14 - 16 (occasionally 14) ; gill rakers 11 - 12 on the inner side of 1st gill arch ; vertebrae (1 ex 1 ) 4 + 29. The new species is closely related to Yunnanilus pleurotaenia (Regan , 1904) in length of lateral 2 line , pattern of scale coverage , count of fin rays , shape of caudal 2 fin and length of rostral barbels , but can be distinguished from all congeners by its unique color pattern and the elongated papillae on upper and lower lips , and can be further distinguished from Y. pleurotaenia by some morphometric characters : standard length/ body depth 4 1 3 - 5 1 6 (5 1 0) vs. 3 1 9 - 4 1 9 (4 1 2) , standard length/ head length 4 1 4 - 5 1 1 (4 1 7) vs. 3 1 7 - 3 1 9 (3 1 8) , standard length/ caudal 2 peduncle length 5 1 7 - 7 1 1 (6 1 3) vs. 7 1 7 - 9 1 1 (8 1 4) , head length/ snout length 2 1 7 - 3 1 5 (3 1 0) vs. 2 1 5 - 2 1 8 (2 1 6) , caudal 2 peduncle length/ depth 1 1 2 - 1 1 7 (1 1 4) vs. 1 1 1 - 1 1 2 (1 1 1) . All type specimens of Triplophysa flavi 2 corpus sp. nov. (Holotype : KIZ 995004 , 76 1 4 mm SL) were diagnosticated by characters : dorsal 2 fin 3 , 10 ; anal 2 fin 3 , 6 - 7 ; pectoral 2 fin 1 , 11 ; pelvic 2 fin 1 , 6 - 7 (occasionally 1 , 6) ; branched caudal 2 fin rays 8 + 8 ; gill rakers 5 - 9 on the outer side and 11 - 12 on the inner side of 1st gill arch ; vertebrae (1 ex 1 ) 4 + 34. The new triplophysid species is closely related to Triplophysa nandanensis Lan et al . 1995 by dorsal 2 fin origin at mid point of body , lateral 2 line complete and deep forked caudal 2 fin , and can be easily distinguished from all congeners byfollowing characters : 10 branched dor 2 sal fin rays , 6 - 7 branched anal fin rays , body covered by tiny scales , lateral 2 line complete , 6 - 7 broad vertical bars on body and 1 narrow longitudinal stripe along lateral 2 line , caudal 2 fin deeply forked , a large black spot on caudal 2 fin base , 2 black bars on both lobes of caudal 2 fin , posterior tip of pelvic 2 fin surpasses anus , a developed axillary lobe pre 2 sent at pelvic 2 fin base , upper lip completely interrupted at the middle. Both genera of Yunnanilus and Triplophysa are plateaus 2 indicator fishes. The genus of Yunnanilus is endemic to the eastern Yunnan Plateau. The genus of Triplophysa occurs mainly in Qinghai 2 Tibet Plateau. The geographical location of the two new loach species in Guangxi are far away from the distribution centers of their genera. Their distribution patterns are obviously disjunct. A preliminary phylogenetic analysis on both new species and their relatives demonstrates that disjunct patterns might have been yielded by vicariant mode of speciations.
收录类别	其他
资助信息	中国科学院知识创新重要方向项目(KSCX2-1-06A)
语种	中文
公开日期	2010-08-10
内容类型	期刊论文
源URL	[http://159.226.149.42:8088/handle/152453/1262]
专题	昆明动物研究所_系统进化与生物地理学昆明动物研究所_东南亚野生动物多样性
作者单位	1.中国科学院昆明动物研究所,昆明650223 2.广西都安县畜牧水产局,广西都安530700
推荐引用方式 GB/T 7714	杨君兴,陈小勇,蓝家湖. 高原特有条鳅鱼类两新种在广西的发现及其动物地理学意义[J]. 动物学研究,2004,25(2):111-116.
APA	杨君兴,陈小勇,&蓝家湖.(2004).高原特有条鳅鱼类两新种在广西的发现及其动物地理学意义.动物学研究,25(2),111-116.
MLA	杨君兴,et al."高原特有条鳅鱼类两新种在广西的发现及其动物地理学意义".动物学研究 25.2(2004):111-116.