Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01 Košice, Slovakia.
Department of Veterinary Biosciences (Veterinary Parasitology), Faculty of Veterinary Medicine, University of Helsinki, Agnes Sjöberginkatu 2, Helsinki 00014, Finland.
Parasite. 2022;29:8. doi: 10.1051/parasite/2022009. Epub 2022 Feb 11.
The geographic distribution of Spirometra erinaceieuropaei (Cestoda: Diphyllobothriidea), the causative agent of food/water-borne sparganosis, is restricted to Europe, where infected canids, felids, mustelids, suids, and reptiles have been documented from Poland, Ukraine, Belarus, Russia, Serbia, Estonia, Latvia, and Finland. The main objective of the current study was to map the molecular divergence of S. erinaceieuropaei from Finland using the complete sequences of the mitochondrial cytochrome c oxidase subunit 1 gene (cox1 mtDNA). Seven cox1 haplotypes were determined in 15 tapeworms from Eurasian lynx (Lynx lynx) from three localities in southern Finland. In addition, the first inter-population study of S. erinaceieuropaei based on currently obtained data on cox1 from Finland and previously published data from Finland, Latvia, Ukraine, and Poland, was performed. The haplotype network showed a star-like pattern without specific subdivision of lineages according to the locality. Samples from Finland, Latvia, and Poland shared several haplotypes and formed the common Baltic lineage. The haplotype of S. erinaceieuropaei from Ukraine was unique and placed on a separate mutational pathway, suggesting a different lineage of the parasite.
细粒棘球绦虫（Cestoda: Diphyllobothriidea）是食源性/水源性包虫病的病原体，其地理分布局限于欧洲，在波兰、乌克兰、白俄罗斯、俄罗斯、塞尔维亚、爱沙尼亚、拉脱维亚和芬兰，已从犬科、猫科、鼬科、猪科和爬行类动物中记录到感染病例。本研究的主要目的是利用线粒体细胞色素 c 氧化酶亚基 1 基因（cox1 mtDNA）的完整序列，对来自芬兰的细粒棘球绦虫进行分子分化绘图。从芬兰南部三个地点的欧亚猞猁（Lynx lynx）中确定了 15 条绦虫的 7 个 cox1 单倍型。此外，还根据目前从芬兰获得的 cox1 数据和先前从芬兰、拉脱维亚、乌克兰和波兰发表的数据，首次对细粒棘球绦虫进行了种群间研究。单倍型网络显示出无特定谱系细分的星形模式。来自芬兰、拉脱维亚和波兰的样本共享多个单倍型，并形成了共同的波罗的海谱系。来自乌克兰的细粒棘球绦虫的单倍型是独特的，位于单独的突变路径上，表明寄生虫的谱系不同。
