ABSTRACT

The first phylogenetic reconstruction of the Lepocreadiidae that include Opechona olssoni, Prodistomum alaskense and Prodistomum orientale is presented. These trematode species were collected during a parasitological survey of marine fish caught in the North-western Pacific. Phylogenetic analysis based on comparisons of 28S rRNA gene partial sequences supports the monophyly of the genus Opechona. On the contrary, the genus Prodistomum is not a monophyletic taxon. The Opechona spp. clade together with P. orientale, P. alaskense and the three previously sequenced lepocreadiid species Prodistomum keyam, Preptetos trulla and Clavogalea trachinoti form a single high-supported group. The result of ITS1-based analysis does not confirm the taxonomic hypothesis about the conspecificity of O. olssoni and O. bacillaris.

摘要

介绍了Lepocreadiidae的第一个系统发育重建，包括Opechona olssoni，Prodistomum alaskense和Prodistomum Orientale。这些吸虫物种是在对西北太平洋捕获的海鱼进行寄生虫调查期间收集的。基于28S rRNA基因部分序列比较的系统进化分析支持了Opechona属的单属性。相反，Prodistomum属不是单系分类群。该Opechona属。进化枝与东方对虾，阿拉斯加对虾和三个先前测序的豹cre科物种一起进化Prodistomum keyam，Preptetos trulla和Clavogalea trachinoti组成一个单一的高支持群体。基于ITS1的分析结果并未证实关于Os olssoni和O. bacillaris的同质性的分类学假设。