LI Qiang, HUANG Wenwei, PENG Suhan, ZHOU Jiangwei, ZHAN Huawei, ZHANG Yuying, LAN Zhaojun, LI Wenjun, GUI Lin
Anhui Agricultural Science Bulletin.
2023, 29(16):
51-55.
Based on the COI gene sequence, 13 species of Acrossocheilus were analysed. The results showed that the genetic distance between species of Acrossocheilus is more than 0.020 0 except for the genetic distance between A. beijiangensis and A. stenotaeniatus (0.015 7). In the phylogenetic tree, A. beijiangensis and A. stenotaeniatus formed as the same clade, which genetic distance less than the level of species classification. The two species may be the same species with two different names. The genetic distance from A. jishouensis, A. parallens and A.hemispinus protrudated into sister branches in phylogenetic tree, and the genetic distance from both was obviously greater than 0.020 0, which showed that A. jishouensis is an effective specie. A. hemispinus and A. cinctus were distributed in two independent branches of the phylogenetic tree, and the genetic distance between them is larger than that between the species on the same branch, so they should be regarded as two separate species. The results of this study indicate that mitochondrial COI gene sequences are effective for species identification and can be used to explore the phylogeny of Acrossocheilus.