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Updated: Sep 23, 2025

Novel Sequence Discovery by Subtractive Genomics
Published on: January 25, 2019
The complete mitochondrial genome of Hemiclepsis yangtzenensis (Clitellata: Glossiphoniidae)
Ti-Lin Yi1,2, Meng-Ting Pei3, Zhi-Wei Xu1
1School of Animal Science, Yangtze University, Jingzhou, China.
Abstract:
We present the complete mitochondrial genome sequence of a recently described new leech species named Hemiclepsis yangtzenensis Yang & Bolotov 2021 collected in central China. The mitochondrial genome is 14,984 bp in length and consists of 13 protein-coding genes, 2 ribosomal RNA genes, and 22 transfer RNA genes, all of which are encoded on a single strand. It exhibited a strong A + T bias of 72.87%. There is a large non-coding region (614 bp) located between the tRNA-Arg and tRNA-His genes, wherein we identified 40 short dispersed repeats, 13-22 bp long, 8 of which were direct, 20 inverted, and 12 palindromic. Phylogenetic analysis of 20 Hirudinea mitogenome sequences resolved monophyletic Glossiphoniidae, and H. yangtzenensis formed a sister lineage with Glossiphonia concolor.
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