Mitochondrial genes and genomes support a cryptic species of tapeworm within Taenia taeniaeformis.

Acta Tropica
Wanzhong JiaD T Littlewood

Abstract

Taenia taeniaeformis is a globally distributed cestode, which uses felids as definitive and rodents as intermediate hosts. The complete mitochondrial DNA (mtDNA) of T. taeniaeformis from Germany (Tt-GER) was sequenced, and compared with that of another isolate from China (GenBank NC_014768; Tt-CHN), both taken from cats. Analysis of the two mtDNAs indicated that the isolates are significantly different from one another with 12.6% and 9.9% nucleotide and amino acid divergence between them, for concatenated protein-coding genes; overall difference based on a pairwise nucleotide alignment of complete mtDNAs was 11.8%. A phylogenetic analysis based on the 12 protein-coding genes of all available taeniid mtDNAs confirmed the two T. taeniaeformis isolates as sister taxa (likely separate species) and early divergent members of the genus, as suggested previously by morphology. Phylogenetic analysis of published fragments of mt genes rrnS, cox1 and nad1, which represent multiple geographic isolates of T. taeniaeformis also resolve two distinct clades that at present do not seem to be geographically isolated. Mean pairwise (nucleotide) differences between the two clades of T. taeniaeformis were approximately 11%, 10% and 13% in partial r...Continue Reading

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Citations

Mar 13, 2014·The Journal of Parasitology·Gaotian ZhangZhenghuan Wang
Jun 13, 2018·Vector Borne and Zoonotic Diseases·Sameh AbuseirChristina Strube
Apr 2, 2021·Molecular Phylogenetics and Evolution·Yue ZhangZhihong Li
Apr 28, 2021·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Mughees Aizaz AlviWan-Zhong Jia

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