石林盲高原鳅Triplophysa shilinensis Chen et Yang,sp.nov.是在我国发现的第四种洞穴条鳅鱼类。其鉴别特征为:眼睛完全退化;体半透明;须发达,鼻瓣延长成须状;体裸露无鳞;背鳍、尾鳍分枝鳍条分别为7和14根;体和尾柄较细长。在摒弃趋同...石林盲高原鳅Triplophysa shilinensis Chen et Yang,sp.nov.是在我国发现的第四种洞穴条鳅鱼类。其鉴别特征为:眼睛完全退化;体半透明;须发达,鼻瓣延长成须状;体裸露无鳞;背鳍、尾鳍分枝鳍条分别为7和14根;体和尾柄较细长。在摒弃趋同演化特征后,综合形态性状并结合地理分布资料分析的结果表明,类似于南盘江高原鳅的祖先曾广泛分布于滇东南一带,后来随着地下河的发育分别进入个旧卡房笆蕉箐溶洞和石林尾博邑溶洞。在溶洞间的地理隔离作用下,形成了与环境相适应的各自形态特点,最终分别演化成为目前的石林盲高原鳅和个旧盲高原鳅。本文还依据朱松泉的条鳅分类系统,订正了如下2个种:个旧盲高原鳅Triplophysa gejiuensis (Chu et Chen)、湘西盲高原鳅Triplophysa xiangxiensis (Yang et al.)。展开更多
2002年和2006年,在云南省邱北县腻脚村一喀斯特洞穴深处各采到一批盲鳅标本,经鉴定,为高原鳅属(Triplophysa)一未记录的新种--邱北盲高原鳅。新种具有的特殊头形及可数性状等特征,与中国已记录的穴居高原鳅均不同,而与分布于金沙江水系...2002年和2006年,在云南省邱北县腻脚村一喀斯特洞穴深处各采到一批盲鳅标本,经鉴定,为高原鳅属(Triplophysa)一未记录的新种--邱北盲高原鳅。新种具有的特殊头形及可数性状等特征,与中国已记录的穴居高原鳅均不同,而与分布于金沙江水系的前鳍高原鳅(T.anterodorsalis Cao et Zhu)相近,但新种有下列特征可与之相区别:1)无眼vs.眼正常;2)背鳍分枝鳍条7vs.8-9;3)尾叉形vs.尾微凹。新种与同水系(南盘江)的大斑高原鳅(T.macromaculata Yang)也较相近,但可与之相区别:1)无眼vs.有眼;2)无色素vs.有斑;3)尾叉形vs.尾微凹。展开更多
A new blind loach of the genus Triplophysa was collected in 2007 from a cave in Leyi village,located near Chuanshan Town,Huangjiang County in the Guangxi Zhuang Autonomous Region of southern China.The new species,Trip...A new blind loach of the genus Triplophysa was collected in 2007 from a cave in Leyi village,located near Chuanshan Town,Huangjiang County in the Guangxi Zhuang Autonomous Region of southern China.The new species,Triplophysa huangjiangensis sp.nov,can be distinguished from its congeners by eyes and scales absent;caudalfin forked;adipose keel present;lips with furrows;distal margin of dorsal-fin truncate,dorsal fin origin much closer to caudal-fin base than snout tip;8-9 branched dorsal-fin rays;6-7 branched pelvic-fin rays;6 branched anal-fin rays;10-11 branched pectoral-fin rays;13-14 branched caudal-fin rays;pectoral-fin length 52.3%-70.7% the distance between pectoral-fin origin to pelvic-fin origin;dorsal-fin origin posterior to vertical line of pelvic-fin origin;outer rostral barbel longer than other two pairs of barbels,with 47.0%-73.8% of lateral head length;anterior nostril with elongate barbel-like tip;and posterior chamber of gas-bladder developed,reaching pelvic-fin origin.展开更多
文摘石林盲高原鳅Triplophysa shilinensis Chen et Yang,sp.nov.是在我国发现的第四种洞穴条鳅鱼类。其鉴别特征为:眼睛完全退化;体半透明;须发达,鼻瓣延长成须状;体裸露无鳞;背鳍、尾鳍分枝鳍条分别为7和14根;体和尾柄较细长。在摒弃趋同演化特征后,综合形态性状并结合地理分布资料分析的结果表明,类似于南盘江高原鳅的祖先曾广泛分布于滇东南一带,后来随着地下河的发育分别进入个旧卡房笆蕉箐溶洞和石林尾博邑溶洞。在溶洞间的地理隔离作用下,形成了与环境相适应的各自形态特点,最终分别演化成为目前的石林盲高原鳅和个旧盲高原鳅。本文还依据朱松泉的条鳅分类系统,订正了如下2个种:个旧盲高原鳅Triplophysa gejiuensis (Chu et Chen)、湘西盲高原鳅Triplophysa xiangxiensis (Yang et al.)。
文摘2002年和2006年,在云南省邱北县腻脚村一喀斯特洞穴深处各采到一批盲鳅标本,经鉴定,为高原鳅属(Triplophysa)一未记录的新种--邱北盲高原鳅。新种具有的特殊头形及可数性状等特征,与中国已记录的穴居高原鳅均不同,而与分布于金沙江水系的前鳍高原鳅(T.anterodorsalis Cao et Zhu)相近,但新种有下列特征可与之相区别:1)无眼vs.眼正常;2)背鳍分枝鳍条7vs.8-9;3)尾叉形vs.尾微凹。新种与同水系(南盘江)的大斑高原鳅(T.macromaculata Yang)也较相近,但可与之相区别:1)无眼vs.有眼;2)无色素vs.有斑;3)尾叉形vs.尾微凹。
基金supported by Systematic and Conservation Studies on Cave Fishes in Guangxi(2060302)
文摘A new blind loach of the genus Triplophysa was collected in 2007 from a cave in Leyi village,located near Chuanshan Town,Huangjiang County in the Guangxi Zhuang Autonomous Region of southern China.The new species,Triplophysa huangjiangensis sp.nov,can be distinguished from its congeners by eyes and scales absent;caudalfin forked;adipose keel present;lips with furrows;distal margin of dorsal-fin truncate,dorsal fin origin much closer to caudal-fin base than snout tip;8-9 branched dorsal-fin rays;6-7 branched pelvic-fin rays;6 branched anal-fin rays;10-11 branched pectoral-fin rays;13-14 branched caudal-fin rays;pectoral-fin length 52.3%-70.7% the distance between pectoral-fin origin to pelvic-fin origin;dorsal-fin origin posterior to vertical line of pelvic-fin origin;outer rostral barbel longer than other two pairs of barbels,with 47.0%-73.8% of lateral head length;anterior nostril with elongate barbel-like tip;and posterior chamber of gas-bladder developed,reaching pelvic-fin origin.
