摘要
应用数值分类方法探讨了中国罗索线虫属(Romanomersis)“种”的水平划分问题,以国内已发表的6种罗索属线虫及武昌罗索线虫的7个种群作为分类运算单位(OTUs),观测43个性状,计算OTUs间的平均欧氏距离系数,运用UPGMA法聚类。聚类结果树系图表明,结合线l_2在1.4681(平均欧氏距离系数)的水平上,将国内传统方法定的6种罗索属线虫聚合为3类,结合线l_2可以作为“种线”,按照优先权,国内6“种”罗索线虫被归并为旌德罗索线虫R.jingdensis(同物异名:集安罗索线虫R.jianensis),四川罗索线虫R.sichuanensis和武昌罗索线虫R.wuchangensis(同物异名豫南罗索线虫R.yunauensis,彬州罗索线虫R.chenzhouensis)。根据各分类群形态测量值,结合对宿主的特异性差异和是否存在生殖隔离等情况综合考虑,作者认为这一结果比较符合实际。
This paper deals with the diagnosis of species of Romanomermis genus in China using the numerical taxonomic methods. A Q clustering analysis for 12 OTUs of Romanomermis genus in China, including 6 species of this genus and 7 populations of R·wuchangensis, based on 43 characters has been undertaken by means of the average Euclidean distance coefficients and UPGMA method. The phenogram indicated that 12 OTUs were classified into 3 groups corresponding to 3 taxonomic species respectively, i. e. R. jingdensis (Syn. R. jianensis) and R. sichuanensis as well as R. wuchangensis (Syn. R. yunanensis, R, chenshouensis). And the combined line l_2(1.4681)was considered as a line for diagnosis of the species. Furthermore, the morphometric data of each OTU and the differences of sensitivity to host as well as the biological characteristics of the mating test were discussed. We think the results of Q clustering andlysis comparatively tally with the actual situation.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
1992年第2期204-208,共5页
Journal of Central China Normal University：Natural Sciences
基金
联合国开发计划署/世界银行/世界卫生组织热带病研究培训特别计划处的资助~~
