旋毛虫是一种重要的人兽共患寄生虫，寄生于人体可导致严重的疾病。为了了解我国几个不同地区旋毛虫之间的种属关系，我们对这些地区的旋毛虫进行了线粒体细胞色素氧化酶亚单位I（COI）基因的扩增，并得到了正确的COI基因。利用ClusterX、Genedoc等软件我们对这些COI基因序列进行了分析，构建了遗传距离矩阵及系统发生树。分析可知，T1与东北株COI基因的相似性高达97.9%，遗传距离仅为0.0081，两者的同源性非常高。T2与T5株COI基因的相似性为95.0%，遗传距离为0.0412，同源性也很高，两者与T3株有一定的差别。湖北株与云南株的遗传距离为0.0000，两者的同源性最高。而河南株与...Trichinella is an important intestinal parasitic nematode in human and animal which can cause serious trichinellosis. In order to analyse the relationship between several Trichinella isolates from different areas in China, we amplified the COI gene from these isolates and obtained their sequences. We analyzed these sequences and established the genetic distance matrix and the phylogenetic tree by ...学位：理学硕士院系专业：生命科学学院生物学系_动物学学号：2012005130199
