中国纹胸鮡属鱼类的分类、谱系分化与区域地史关系研究

项目名称： 中国纹胸鮡属鱼类的分类、谱系分化与区域地史关系研究

项目编号： No.31071907

项目类型： 面上项目

立项/批准年度： 2011

项目学科： 生物科学

项目作者： 杨剑

作者单位： 中国科学院昆明动物研究所

项目金额： 8万元

中文摘要： 纹胸鮡属鱼类，分布于中印山区、小亚细亚、东南亚的广大地区，记录有70余种，我国有20余种。近年不断有国内外本属鱼类新种的报道。在我国，该属鱼类既有仅分布于某一流域的特有种，也有跨流域分布的广布种。但近年来的野外工作发现在我国某些地方存在种类的误定，或存在没有被描述的种类。不同水系异域分化近缘种间和跨流域的广布种不同水系间的分化程度如何？中国纹胸鮡属鱼类是否为单系？各物种间的系统关系怎样？青藏高原的在第三纪晚期以来的大地质事件对纹胸鮡属鱼类的物种分化和分布格局带来什么影响？本项目拟收集我国各水系分布的纹胸鮡属鱼类标本和组织材料，以形态性状和分子系统发育相结合，系统整理中国纹胸鮡属鱼类；构建系统发育树，并运用分子钟计算支系分化时间。结合鱼类的分布信息，分析谱系地理分化与各大地质事件之间的对应关系；基于系统发育树，讨论中国各大主要水系间的关系，推算鱼类形态特征的演化。

中文关键词： 纹胸鮡属；中国；系统整理；分子系统学；生物地理学

英文摘要： Glyptothorax is a group of Sisoridae fish which wide distributing from Asia Minor (in the Tigris and Euphrates River drainages) westward to East Asia (in the Yangtze River drainage) and southward to Southeast Asia. There are more than 90 nominal species recorded, among which about 70 species are valid, including more than 20 species in China. It is still blooming in new species reported these years. In China, there existed both specific-basin species and inter-basin species. But field work in recently years reminded us that there were misidentified or unnamed species. How about the evolution level of these species? Does the Chinese species of Glyptothorax be a monophyly? What are their phylogenetic relationships? How about the effect of uplift of Qinghai-Tibet plateau to the speciation and distribution of Glyptothorax? This project is expected to resolve these questions by doing a system review of Chinese Glyptothorax species, by the method of morphology and molecular analysis combined. Molecular dating will calculate to deduce the biogeography of Glyptothorax. Phylogenetic tree will provide us a signal of the evolution of morphologic characteristics and the relationships of paleo-river systems.

英文关键词： Glyptothorax; China; System review; phylogeny; biogeography