Yang Qing, Zhu Yurong, Xiong Bangxi, Liu Huanzhang
The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan 430072, P. R. China.
Zoolog Sci. 2011 Feb;28(2):158-67. doi: 10.2108/zsj.28.158.
A new species of the bitterling genus Acheilognathus, Acheilognathus changtingensis sp. nov., was recently discovered from Changting County in Hanjiang River, Fujian Province, Southeastern China. It can be diagnosed by the following combination of characters: dorsal fin with three simple and 15 (occasionally 14) branched fin rays, anal fin with three simple and 12 (occasionally 11) branched fin rays; dorsal fin pale and anal fin slightly pale; white spots on anal-fin rays forming a transverse band, and anal fin margined with white band in males. Its unique characters are the many dispersed black spots on the dorsal, anal, pelvic, caudal fins, and on the head. Using the mitochondrial cytochrome Jb gene as a molecular marker, we reconstructed phylogenetic trees of A. changtingensis sp. nov. and other species in Acheilognathus to confirm its taxonomic status and study its speciation. Analyses of both morphological and molecular data consistently indicated the taxonomic status of the present new species. The results also show that A. changtingensis sp. nov. and Acheilognathus macropterus are sister species that diverged about 14.50 MYA by geographical isolation.
最近，在中国东南部福建省汀江长汀县发现了一种新的䱗属物种——长汀䱗（Acheilognathus changtingensis sp. nov.）。它可以通过以下特征组合来鉴别：背鳍有3根不分枝鳍条和15根（偶尔14根）分枝鳍条，臀鳍有3根不分枝鳍条和12根（偶尔11根）分枝鳍条；背鳍浅色，臀鳍稍浅；臀鳍鳍条上的白色斑点形成一条横向带，雄性臀鳍边缘有白色带。其独特特征是背鳍、臀鳍、腹鳍、尾鳍以及头部有许多分散的黑色斑点。以线粒体细胞色素Jb基因作为分子标记，我们构建了长汀䱗及䱗属其他物种的系统发育树，以确认其分类地位并研究其物种形成。形态学和分子数据的分析一致表明了该新物种的分类地位。结果还表明，长汀䱗和大鳍䱗是姐妹物种，大约在1450万年前因地理隔离而分化。
