Chen Shijing, Sheraliev Bakhtiyor, Shu Lu, Peng Zuogang
Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Southwest University School of Life Sciences, Chongqing 400715, China Southwest University Chongqing China.
Faculty of Life Sciences, Fergana State University, Fergana 150100, Uzbekistan Fergana State University Fergana Uzbekistan.
Zookeys. 2021 Mar 26;1026:179-192. doi: 10.3897/zookeys.1026.61570. eCollection 2021.
We describe a new species of cave-dwelling loach, , based on specimens collected in a subterranean pool in a cave in Wulong County, Chongqing, Southwest China. The pool is connected to the Wujiang River drainage. differs from its congeners by the following combination of characters: eyes present, caudal fin with 18 branched rays; posterior chamber of the air bladder degenerate; stomach U-shaped; intestine without bends or loops immediately posterior to stomach; body smooth and scaleless, and lateral line complete. The mitochondrial cytochrome sequence differs from those of other published sequences of species of by 14.9-24.9% in K2P distance. Phylogenetic analysis based on cytochrome gene sequences recovered as sister taxon to all other cave-dwelling species of .
我们基于在中国西南部重庆武隆县一个洞穴的地下水池中采集的标本，描述了一种新的穴居泥鳅物种。该水池与乌江排水系统相连。该物种与其同属物种的区别在于以下特征组合：有眼睛，尾鳍有18条分支鳍条；鳔后室退化；胃呈U形；肠道在胃后方没有弯曲或环；身体光滑无鳞，侧线完整。线粒体细胞色素序列与其他已发表的该属物种序列在K2P距离上相差14.9 - 24.9%。基于细胞色素基因序列的系统发育分析将该物种恢复为所有其他穴居该属物种的姐妹分类单元。
