Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Morphology and Mitochondrial Genome of Fischoederius sp. 1 in Thailand

  • Watthanasiri, Pichanee (Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University) ;
  • Geadkaew-Krenc, Amornrat (Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University) ;
  • Grams, Rudi (Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University)
  • Received : 2021.05.04
  • Accepted : 2021.07.20
  • Published : 2021.08.31
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Abstract

A rumen fluke Fischoederius elongatus is assigned to the type species of genus Fischoederius, family Gastrothylacidae. However, the mitochondrial sequences recently published are thought to be of inconsistent species, suggesting that several morphologically similar but genetically distinct species might be classified as Fischoederius elongatus. Thus, mentions of F. elongatus from South, Southeast, and East Asia might unintentionally refer to different species. The present work describes morphology and a full mitochondrial genome sequence of one of these species. The fluke specimens were collected from 2 infected cattle in Thailand. An interesting finding was the presence of a second tRNA-Asp gene next to a partial ND1 gene. It is suggested that these duplicated sequences are the remnants of non-reciprocal recombination events caused by inverted repeats located between ND2 and ND1 mitochondrial genes.

Keywords

Acknowledgement

This work was funded by the Thailand Research Fund through a Royal Golden Jubilee Ph.D. scholarship to Pichanee Watthanasiri (PHD/0061/2556) and Thammasat University Research Unit in Parasitic Diseases. Nucleotide sequences of Fischoederius sp. 1 (Thailand) in this paper are deposited in GenBank under accession number MZ043126 and BioProject PRJNA723375.

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