中文摘要：

我们在由分析细胞色素 b 基因的序列在西藏的高原和它的包围区域在 36 个地理地点散布的高度专业化的等级 schizothoracine 鱼的 23 种类和亚种之中恢复了种系发生的关系。而且，我们在西藏的高原基于一个历史的地质的隔离事件在系之中估计了可能的分叉的时间。分子的数据表明高度专业化的等级 schizothoracine 鱼不是一个单音的门的组，但是与 generaGymnocypris 和 Schizogypsis 一样。我们的结果显示分子的种系发生的关系显然与排水反映了他们的地理、历史的协会，也就是，从一样、邻近的排水的种类一起聚类并且有靠近的关系。不同的系的分叉时间与很好一致快速高举西藏的 Plateauin 分阶段执行迟了的新生代，建议 schizothoracine 鱼的起源和进化被环境强烈影响变化源于西藏的高原的胀起。

英文摘要：

We recovered the phylogenetic relationships among 23 species and subspecies of the highly specialized grade schizothoracine fishes distributing at 36 geographical sites in the Tibetan Plateau and its surrounding regions by analyzing sequences of cytochrome b genes. Furthermore, we estimated the possible divergent times among lineages based on a historical geological isolation event in the Tibetan Plateau. The molecular data revealed that the highly specialized grade schizothoracine fishes were not a monophyletic group, but were the same as genera Gymnocypris and Schizogypsis. Our results indicated that the molecular phylogenetic relationships apparently reflected their geographical and historical associations with drainages, namely species from the same and adjacent drainages clustered together and had close relationships. The divergence times of different lineages were well consistent with the rapid uplift phases of the Tibetan Plateau in the late Cenozoic, suggesting that the origin and evolution of schizothoracine fishes were strongly influenced by environment changes resulting from the upheaval of the Tibetan Plateau.