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Phylogenetic relationships between Dicrocoelium chinensis populations in Japan and China based on mitochondrial nad1 gene sequences

文献类型： 外文期刊

作者： Hayashi, Kei 1 ; Tang, WenQiang 3 ; Ohari, Yuma 1 ; Ohtori, Maiko 1 ; Mohanta, Uday Kumar 1 ; Matsuo, Kayoko 4 ; Sato, 1 ;

作者机构： 1.Iwate Univ, Lab Vet Parasitol, Fac Agr, 3-18-8 Ueda, Morioka, Iwate 0208550, Japan

2.Gifu Univ, United Grad Sch Vet Sci, Dept Pathogen Vet Sci, 1-1 Yanagido, Gifu 5011193, Japan

3.Tibet Acad Agr & Anim Husb Sci, Inst Anim Sci, 56 Duodi Rd, Lhasa 850009, Tibet, Peoples R China

4.Hida Reg Livestock Hyg Serv Ctr, 7-468 Kamiokamotomachi, Takayama 5068688, Japan

5.Gifu Univ, Fac Appl Biol Sci, 1-1 Yanagido, Gifu

关键词： Dicrocoelium chinensis;China;Japan;nadl;Phylogenetic analysis;ITS2

期刊名称：PARASITOLOGY RESEARCH （ 影响因子：2.289； 五年影响因子：2.403 ）

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收录情况： SCI

摘要： We carried out phylogenetic analyses of the relationships between Dicrocoelium chinensis populations in Japan and China using molecular markers. One hundred nine lancet flukes collected from Japan and China were identified as D. chinensis based on their testis orientation and the nucleotide sequences of their ribosomal ITS2. These flukes were analyzed phylogenetically using mitochondrial nad1 gene sequences. An analysis of molecular variance found that the percentage of variation between the countries was extremely high, indicating that the D. chinensis populations in Japan and China are differentiated genetically. D. chinensis mainly parasitizes wild sika deer, which is thought to originate in northeast Asia and to have colonized into Japan from the Eurasia continent in the Pleistocene glaciations. In addition, phylogenic analyses indicated that Japanese sika deer is genetically differentiated from Chinese population; therefore, we hypothesize that D. chinensis might have been introduced into Japan along with the migration of infected wild ruminants in the Pleistocene, and then the population became differentiated from the Chinese population. This study provides the nucleotide sequences of the nad1 gene of D. chinensis in Japan for the first time and shows that these sequences are useful for elucidating the phylogenetic relationships of the Dicrocoelium species prevalent in Asia.

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