Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 400732, China.
Sci China Life Sci. 2012 Apr;55(4):312-20. doi: 10.1007/s11427-012-4305-z. Epub 2012 May 9.
Nineteen taxa representing 10 genera of Sisoridae were subjected to phylogenetic analyses of sequence data for the nuclear genes Plagl2 and ADNP and the mitochondrial gene cytochrome b. The three data sets were analyzed separately and combined into a single data set to reconstruct phylogenetic relationships among Chinese sisorids. Both Chinese Sisoridae as a whole and the glyptosternoid taxa formed monophyletic groups. The genus Pseudecheneis is likely to be the earliest diverging extant genus among the Chinese Sisoridae. The four Pareuchiloglanis species included in the study formed a monophyletic group. Glaridoglanis was indicated to be earliest diverging glyptosternoid, followed by Glyptosternon maculatum and Exostoma labiatum. Our data supported the conclusion that Oreoglanis and Pseudexostoma both formed a monophyletic group. On the basis of the fossil record and the results of a molecular dating analysis, we estimated that the Sisoridae diverged in the late Miocene about 12.2 Mya. The glyptosternoid clade was indicated to have diverged, also in the late Miocene, about 10.7 Mya, and the more specialized glyptosternoid genera, such as Pareuchiloglanis, originated in the Pleistocene (within 1.9 Mya). The speciation of glyptosternoid fishes is hypothesized to be closely related with the uplift of the Qinghai-Tibet Plateau.
十九个代表 10 个鱠科属的分类单元，进行了核基因 Plagl2 和 ADNP 以及线粒体基因细胞色素 b 的序列数据分析。三个数据集分别进行分析，并组合成一个单一数据集，以重建中国鱠科鱼类的系统发育关系。中国鱠科鱼类整体和 Glyptosternoid 分类单元形成单系群。Pseudecheneis 属可能是中国鱠科鱼类中最早分化的现存属。本研究中包括的四个 Pareuchiloglanis 种形成一个单系群。Glaridoglanis 被认为是最早分化的 Glyptosternoid，其次是 Glyptosternon maculatum 和 Exostoma labiatum。我们的数据支持 Oreoglanis 和 Pseudexostoma 都形成一个单系群的结论。基于化石记录和分子定年分析的结果，我们估计鱠科鱼类在大约 1220 万年前的中新世晚期分化。Glyptosternoid 分支也在中新世晚期分化，大约在 1070 万年前，而更专门化的 Glyptosternoid 属，如 Pareuchiloglanis，则起源于更新世（在 190 万年前）。推测 Glyptosternoid 鱼类的物种形成与青藏高原的隆升密切相关。
