Agatsuma Takeshi, Iwagami Moritoshi, Uni Shigehiko, Takaoka Hiroyuki, Katsumi A, Kimura Eisaku, Bain Odile
Department of Environmental Health Science, Kochi Medical School, Nankoku City, Kochi 783-8505, Japan.
Parasitol Int. 2005 Sep;54(3):195-9. doi: 10.1016/j.parint.2005.04.002.
DNA sequences from a portion of the mitochondrial COI gene were used to clarify phylogenetic relationships among Japanese species in the genus Cercopithifilaria. Sequences were determined from seven Japanese species, five (C. shohoi, C. multicauda, C. minuta, C. tumidicervicata and C. bulboidea) from the serow (Capricornis crispus F. Bovidae) and two (C. longa and C. crassa) from the sika deer (Cervus nippon nippon F. Cervidae). No base substitutions were observed between C. bulboidea and C. longa, suggesting that recent host switching of a lineage of C. bulboidea between bovid and cervid hosts gave rise to C. longa. In phylogenetic trees inferred using a variety of methods, the morphologically ancestral type, C. bulboidea, appeared as a derived species. C. multicauda was found to be basal in the analyses. It seems therefore that C. multicauda is the most primitive out of the seven species.
线粒体细胞色素氧化酶亚基I（COI）基因部分的DNA序列被用于阐明日本长尾丝虫属物种间的系统发育关系。测定了来自七个日本物种的序列，其中五个（庄内长尾丝虫、多尾长尾丝虫、微小长尾丝虫、肿胀颈长尾丝虫和球茎长尾丝虫）来自鬣羚（日本鬣羚，牛科），两个（长形长尾丝虫和粗长尾丝虫）来自梅花鹿（日本梅花鹿，鹿科）。在球茎长尾丝虫和长形长尾丝虫之间未观察到碱基替换，这表明球茎长尾丝虫的一个谱系最近在牛科和鹿科宿主之间发生宿主转换，从而产生了长形长尾丝虫。在使用多种方法推断的系统发育树中，形态学上的原始类型球茎长尾丝虫表现为衍生物种。在分析中发现多尾长尾丝虫处于基部位置。因此，多尾长尾丝虫似乎是这七个物种中最原始的。
