Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Survey of Zoonotic Trematode Metacercariae in Fish from Irrigation Canal of Togyo-jeosuji (Reservoir) in Cheorwon-gun, Gangwon-do, Republic of Korea

  • Sohn, Woon-Mok (Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine) ;
  • Na, Byoung-Kuk (Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine) ;
  • Cho, Shin-Hyeong (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Lee, Hee Il (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Ju, Jung-Won (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Lee, Myoung-Ro (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Lim, Eun-Joo (Infectious Disease Intelligence Division, Gangwon Institute of Health and Environment) ;
  • Son, Sung Yong (Infectious Disease Intelligence Division, Gangwon Institute of Health and Environment) ;
  • Ko, Eunmi (Infectious Disease Intelligence Division, Gangwon Institute of Health and Environment) ;
  • Choi, Jaeseok (Research Center for Fish Environmental Institute/Wildlife and Fish Research & Conservation Center, Kangwon National University)
  • Received : 2021.05.20
  • Accepted : 2021.07.21
  • Published : 2021.08.31
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Abstract

The infection status of zoonotic trematode metacercariae (ZTM) was investigated in total 568 freshwater fishes (19 species) from the irrigation canal of Togyo-jeosuji (Reservoir) in Cheorwon-gun, Gangwon-do, the Republic of Korea for 3 years (2018-2020). All fishes were examined using the artificial digestion method. The metacercariae of Clonorchis sinensis (CsMc) were detected in 180 (43.8%) out of 411 fish of positive species, and their infection intensity was 38 per fish infected (PFI). Especially, in 2 fish species, i.e., Pseudorasbora parva and Puntungia herzi, the prevalence was 82.1% and 31.3%, and the infection intensity with CsMc was 88 and 290 PFI, respectively. Metagonimus spp. metacercariae (MsMc) were found in 403 (74.1%) out of 544 fish of positive species, and their infection intensity was 62 PFI. In the pale chub, Zacco platypus, the prevalence of MsMc was 98.6%, and their infection intensity was 144 PFI. Centrocestus armatus metacercariae were detected in 171 (38.9%) out of 440 fish of positive species, and their infection intensity was 1,844 PFI. Echinostoma spp. metacercariae were found in 94 (19.6%) out of 479 fish of positive species, and their infection intensity was 3 PFI. Metorchis orientalis metacercariae were detected in 43 (29.3%) out of 147 fish of positive species, and their infection intensity was 4 PFI. By the present study, it has been confirmed that some species of ZTM, including CsMc and MsMc, are prevalent in fishes from the irrigation canal of Togyo-jeosuji in Cheorwon-gun, Gangwon-do, Korea.

Keywords

Acknowledgement

This study was supported by an Anti-Communicable Diseases Control Program, 2018-2020 (Investigation and analysis on the infections of zoonotic trematode metacercariae in fish intermediate hosts in the Republic of Korea) of National Research Institute of Health (NRIH), Korea Centers for Disease Control and Prevention (KCDCP). We thank Jung-A Kim, Hee-Ju Kim, and Yeo-Jin Ryu, Department of Parasitology and Tropical Medicine, Gyeongsang National University College of Medicine, Jinju, Korea, for their help in fish examinations.

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