文献类型： 外文期刊

作者： Pan, Ting Shuang ¹ ; Nie, Pin ³ ;

作者机构： 1.Huazhong Agr Univ, Coll Fisheries, Wuhan, Hubei Province, Peoples R China

2.Anhui Acad Agr Sci, Inst Fisheries, Hefei, Anhui, Peoples R China

3.Jimei Univ, Coll Fisheries, Xiamen, Fujian Province, Peoples R China

关键词： Eoacanthocephala;mitochondrion;mt genome;rice-field eel;China;phylogeny;Syndermata

期刊名称：FOLIA PARASITOLOGICA （ 影响因子：2.122； 五年影响因子：1.863 ）

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收录情况： SCI

摘要： Acanthocephalans are a small group of obligate endoparasites. They and rotifers are recently placed in a group called Syndermata. However, phylogenetic relationships within classes of acanthocephalans, and between them and rotifers, have not been well resolved, possibly due to the lack of molecular data suitable for such analysis. In this study, the mitochondrial (mt) genome was sequenced from Pallisentis celatus (Van Cleave, 1928), an acanthocephalan in the class Eoacanthocephala, an intestinal parasite of rice-field eel, Monopterus albus (Zuiew, 1793), in China. The complete mt genome sequence of P. celatus is 13 855 bp long, containing 36 genes including 12 protein-coding genes, 22 transfer RNAs (tRNAs) and 2 ribosomal RNAs (rRNAs) as reported for other acanthocephalan species. All genes are encoded on the same strand and in the same direction. Phylogenetic analysis indicated that acanthocephalans are closely related with a clade containing bdelloids, which then correlates with the clade containing monogononts. The class Eoacanthocephala, containing P. celatus and Paratenuisentis ambiguus (Van Cleave, 1921) was closely related to the Palaeacanthocephala. It is thus indicated that acanthocephalans may be just clustered among groups of rotifers. However, the resolving of phylogenetic relationship among all classes of acanthocephalans and between them and rotifers may require further sampling and more molecular data.