中国姬鼠属物种的空间景观遗传结构及其适应性进化

The wide distributional species may be under the different selective presure due to the different living environment. The different environment factors and local adaptation of species will play the important role in speciation and population divergence. Here, we will use selective nucleotide marker(haemoglobin) and neutral markers (nucleotide intron, microsatellite loci and mitochondrial gene) on several wood mice in China (Apodemus draco, A. chevrieri, A. ilex, A. agrarius and A. latronum) to investigate: (1) the spatial landscape genetic structure of these five species; (2) the molecular mechanism on altitude adaptation; and (3) the effect on speciation and population divergence by their habitat complexity and local altitude adaptation. Thus,this project will be important for understanding the evolutionary mechanism of the small mammals in China.

广泛分布的物种由于生活在不同的环境中，可能会受到不同的选择压力。不同的环境因素以及物种的当地适应性是成种或种群分化的重要因素。本项目拟从多种中国地区姬鼠特有种或广泛分布的物种入手（中华姬鼠、高山姬鼠、澜沧江姬鼠、黑线姬鼠、大耳姬鼠），利用选择性核标记（血红蛋白功能基因，与氧结合相关）和中性核标记（核基因内含子、微卫星，辅以线粒体基因），进行景观遗传学与海拔适应性进化分析。通过种内与种间的比较分析，以期揭示：（1）五种姬鼠的空间景观遗传结构；（2）五种姬鼠对海拔适应性的分子机制；（3）姬鼠栖息地复杂性以及对海拔的适应性在成种与种内遗传分化发挥的作用，为中国地区小型兽类的进化提供重要的基础资料。