Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Morphological and Molecular Confirmation of Parvatrema duboisi Metacercariae in the Manila Clam Ruditapes philippinarum from Gochang-gun, Korea

  • Chang, Taehee (Institute of Parasitic Diseases, Korea Association of Health Promotion) ;
  • Jung, Bong-Kwang (Institute of Parasitic Diseases, Korea Association of Health Promotion) ;
  • Shin, Hyejoo (Institute of Parasitic Diseases, Korea Association of Health Promotion) ;
  • Hong, Sooji (Institute of Parasitic Diseases, Korea Association of Health Promotion) ;
  • Lee, Jeonggyu (Institute of Parasitic Diseases, Korea Association of Health Promotion) ;
  • Kim, Deok-Gyu (Institute of Parasitic Diseases, Korea Association of Health Promotion) ;
  • Patarwut, Laddawan (Department of Zoology, Faculty of Science, Kasetsart University) ;
  • Sohn, Woon-Mok (Institute of Health Sciences, Gyeongsang National University College of Medicine) ;
  • Chai, Jong-Yil (Institute of Parasitic Diseases, Korea Association of Health Promotion)
  • Received : 2019.09.10
  • Accepted : 2019.10.19
  • Published : 2020.02.29
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Abstract

Gymnophallid metacercariae found in the Manila clam Ruditapes philippinarum ('Banjirak' in Korean) from Gochang-gun, Jeollabuk-do, Korea were morphologically and molecularly confirmed to be Parvatrema duboisi (Dollfus, 1923) Bartoli, 1974. The metacercariae were morphologically characterized by having a large oral sucker, small ventral sucker, genital pore some distance anterior to the ventral sucker, no ventral pit, and 1 compact or slightly lobed vitellarium, which were all compatible with P. duboisi. Some of the metacercariae were experimentally fed to mice, and adult flukes were recovered at day 7 post-infection. The morphology of the adult flukes was basically the same as that of the metacercariae except for the presence of uterine eggs; the uterus was filled with up to 40 eggs. The nucleotide sequences (1,193 bp) from ITS regions (ITS1, 5.8S rDNA, and ITS2) of the metacercariae showed 99.7% identity with P. duboisi and 75.7% identity with Gymnophalloides seoi deposited in GenBank. These results confirmed the presence of P. duboisi metacercariae in the Manila clam R. philippinarum in an estuary region of Gochang-gun, Korea.

Keywords

References

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