Kokuzawa Takuya, Ichikawa-Seki Madoka, Itagaki Tadashi
Laboratory of Veterinary Parasitology, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan.
J Vet Med Sci. 2013 Nov;75(11):1427-31. doi: 10.1292/jvms.13-0273. Epub 2013 Jun 26.
We analyzed almost complete 18S rDNA sequences of 10 bovine Eimeria species, namely Eimeria alabamensis, E. auburnensis, E. bovis, E. bukidnonensis, E. canadensis, E. cylindrica, E. ellipsoidalis, E. subspherica, E. wyomingensis and E. zuernii. Although these sequences showed intraspecific variation in 8 species, the sequences of each species were clustered in monophyletic groups in all species, except E. auburnensis. The sequences constituted 3 distinct clusters in a phylogenetic tree with relatively high bootstrap values; however, the members including each cluster shared no similarities in oocyst morphology.
我们分析了10种牛艾美耳球虫的近乎完整的18S核糖体DNA序列,即阿拉巴马艾美耳球虫、奥本艾美耳球虫、牛艾美耳球虫、布基农艾美耳球虫、加拿大艾美耳球虫、柱状艾美耳球虫、椭圆艾美耳球虫、亚球形艾美耳球虫、怀俄明艾美耳球虫和邱氏艾美耳球虫。尽管这些序列在8个物种中显示出种内变异,但除奥本艾美耳球虫外,每个物种的序列在所有物种中都聚为单系群。这些序列在具有相对较高自展值的系统发育树中构成了3个不同的簇;然而,包括每个簇的成员在卵囊形态上没有相似之处。