<p>We determined the complete mitochondrial (mt) genome of a species of Plagiorchiidae, obtained from <i>Lymnaea stagnalis</i> snail collected at Lake Chany, western Siberia. The cercariae were morphologically close to <i>Opisthioglyphe ranae</i> (Frölich, <CitationRef CitationID="CR59">1791</CitationRef>), but the species identification is still pending. The mitogenome is 13,849 base pairs in length. This genome includes 12 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and one non-coding region. Notably, 20 tRNA genes produce transcribed products with conventional cloverleaf structures, while two tRNA genes have unpaired D-arms. The gene <i>atp</i>8 is absent, and the remaining genes are transcribed in the same direction. The A + T content of the Plagiorchiidae gen. mt genome is 65.64%. The complete mtDNA of Plagiorchiidae gen. is shorter than that of all other related xiphidiate species compared in this study. Phylogenetic analysis based on the whole mitogenome revealed that Plagiorchiidae gen. clusters closely with species from the genera <i>Plagiorchis</i> and <i>Glypthelmins</i>. Additionally, the analysis of the 28S rRNA gene indicated that it belongs to Plagiorchiidae and is particularly close to <i>Dolichosaccus</i> (syn. <i>Lecithopyge</i>). This study reports the complete mitochondrial genome of Plagiorchiidae gen., providing a valuable resource of molecular markers for future research on the taxonomy, population genetics, and systematics of the family Plagiorchiidae.</p>

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The complete mitochondrial genome of Plagiorchiidae gen. (Digenea, Plagiorchiidae) cercariae larvae in snails and its phylogenetic implications

  • Janelle Laura J. Gacad,
  • Natalia I. Yurlova,
  • Maria Camille M. Calilung,
  • Mudjekeewis D. Santos,
  • Misako Urabe

摘要

We determined the complete mitochondrial (mt) genome of a species of Plagiorchiidae, obtained from Lymnaea stagnalis snail collected at Lake Chany, western Siberia. The cercariae were morphologically close to Opisthioglyphe ranae (Frölich, 1791), but the species identification is still pending. The mitogenome is 13,849 base pairs in length. This genome includes 12 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and one non-coding region. Notably, 20 tRNA genes produce transcribed products with conventional cloverleaf structures, while two tRNA genes have unpaired D-arms. The gene atp8 is absent, and the remaining genes are transcribed in the same direction. The A + T content of the Plagiorchiidae gen. mt genome is 65.64%. The complete mtDNA of Plagiorchiidae gen. is shorter than that of all other related xiphidiate species compared in this study. Phylogenetic analysis based on the whole mitogenome revealed that Plagiorchiidae gen. clusters closely with species from the genera Plagiorchis and Glypthelmins. Additionally, the analysis of the 28S rRNA gene indicated that it belongs to Plagiorchiidae and is particularly close to Dolichosaccus (syn. Lecithopyge). This study reports the complete mitochondrial genome of Plagiorchiidae gen., providing a valuable resource of molecular markers for future research on the taxonomy, population genetics, and systematics of the family Plagiorchiidae.