Kane R A, Southgate V R, Rollinson D, Littlewood D T J, Lockyer A E, Pagès J R, Tchuem Tchuentè L A, Jourdane J
Biomedical Parasitology Division, Department of Zoology, The Natural History Museum, Cromwell Road, London SW7 5BD.
Parasitology. 2003 Aug;127(Pt 2):131-7. doi: 10.1017/s0031182003003421.
Two recognized strains of Schistosoma intercalatum, one from the Democratic Republic of Congo (DRC), formerly Zaire, and the other from Cameroon, have been investigated using DNA sequences from 3 mitochondrial genes, cytochrome oxidase subunit 1 (cox1), NADH dehydrogenase subunit 6 (nad6) and the small ribosomal RNA gene (rrnS). In addition, partial DNA sequences from the nuclear large subunit ribosomal RNA gene (lsrDNA) were included within the study. Although partial lsrDNA alone reveals little taxonomic information, phylogenetic analysis of the mitochondrial data demonstrates a clear dichotomy between the 2 purported strains and it is proposed that they should be treated as distinct taxa. The 'original' S. intercalatum now falls relatively basal in the S. haematobium group, while the proposed new species is more derived and sister taxon to S. bovis and S. curassoni.
已使用来自3个线粒体基因（细胞色素氧化酶亚基1（cox1）、NADH脱氢酶亚基6（nad6）和小核糖体RNA基因（rrnS））的DNA序列，对两种公认的间插血吸虫菌株进行了研究，其中一种来自刚果民主共和国（DRC），前身为扎伊尔，另一种来自喀麦隆。此外，来自核大亚基核糖体RNA基因（lsrDNA）的部分DNA序列也被纳入该研究。尽管单独的部分lsrDNA几乎没有揭示分类学信息，但线粒体数据的系统发育分析表明，这两种所谓的菌株之间存在明显的二分法，因此建议将它们视为不同的分类单元。“原始的”间插血吸虫现在在埃及血吸虫组中相对处于基部位置，而提议的新物种则更具衍生性，是牛血吸虫和柯氏血吸虫的姐妹分类单元。
