期刊论文

中文

动物学报

1674-5507

2007

53

5

835-844

10.3969/j.issn.1674-5507.2007.05.008

国家自然科学基金项目（No.30470246）资助

本校为第一机构

通过PCR扩增获得我国常见昆虫病原索科线虫6属10种18S rDNA、28S rDNA(D3区)和COI基因序列,结合来自GenBank中6属10种索科线虫的18S rDNA同源序列,用邻接法和最大简约法构建系统进化树.结果显示:12属索科线虫分为三大类群,第一大类群是三种罗索属线虫(Romanomermis)先聚在一起,再与两索属(Amphimermis)和蛛索属(Aranimermis)线虫聚为一支;在第二大类群中,六索属(Hexamermis)、卵索属线虫(Ovomermis) 和多索属(Agamermis)亲缘关系最近,先聚在一起,再与八腱索属(Octomyomermis)和Thaumamermis线虫聚为一支.第三大类群由索属(Mermis)和异索属(Allomermis)线虫以显著水平的置信度先聚在一起,再与蠓索...

Mermithidae is a group of nematodes which parasitise insects and which have diversified morphological characters and host specificity. Because of the biological control value of these entomopathogenic nematodes, it is necessary to study their genetic variation and evolution. However, research on their classificationand evolutionary relationships has always been hindered by the overwhelming number of species, global distribution, and the lack of morphological specializations traditionally used in nematode classification. These problems have brou...