Zhu X, Gasser R B, Chilton N B
Department of Veterinary Science, University of Melbourne, Werribee, Victoria, Australia.
Int J Parasitol. 1998 Apr;28(4):617-22. doi: 10.1016/s0020-7519(97)00214-2.
Sequences of the 5.8S rDNA were obtained for 14 species of nematode from different superfamilies and families within the order Ascaridida. All sequences were 157 bp in length. Sequence differences among species ranged from 0 to 18 bp (0-11.5%). A phenetic analysis of the sequence data groups the 14 taxa into their respective superfamilies and families, but does not discriminate fully at the subfamily level. A phylogenetic analysis of the sequence data failed to resolve the evolutionary relationships at the superfamily level. The 5.8S gene may be useful for phylogenetic studies of the phylum Nematoda at the ordinal level.
从蛔目不同总科和科的14种线虫中获得了5.8S核糖体DNA序列。所有序列长度均为157 bp。物种间的序列差异为0至18 bp（0 - 11.5%）。对序列数据进行的表型分析将14个分类单元归入各自的总科和科，但在亚科水平上不能完全区分。对序列数据进行的系统发育分析未能解决总科水平上的进化关系。5.8S基因可能对线虫门目水平的系统发育研究有用。
