Metagonimus miyatai

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Metagonimus miyatai
Scientific classification
M. miyatai
Binomial name
Metagonimus miyatai
Saito, Chai, Kim, Lee and Rim, 1997[1]

Metagonimus miyatai is a species of a trematode, or fluke worm, in the family Heterophyidae.

It is a human parasite causing metagonimiasis.

Life cycle

Metagonimus miyatai eggs

The first intermediate hosts of Metagonimus miyatai include freshwater snails Semisulcospira libertina,[2] Semisulcospira dolorosa,[2] and Koreoleptoxis globus.[3]

The second intermediate host include freshwater fish: Phoxinus lagowskii steindachneri,[2] Zacco platypus, Nipponocypris temminckii, Plecoglossus altivelis, Tribolodon hakonensis, and Tribolodon brandtii, Opsariichthys bidens.[1][3]

Natural definitive hosts are: dogs, red fox Vulpes vulpes japonica, Japanese raccoon dog Nyctereutes procyonoides viverrinus, black-eared kite Milvus migrans lineatus, and humans.[1]

Experimental definitive hosts are: mice, rats, hamsters, and dogs.[1][3]


This species occurs in Japan[2] and Korea.[3]


An infected individual may experience abdominal pain and diarrhea[4] The diagnosis is done via stool sample[5] and management is via praziquantel, which is recommended [6]


  1. 1.0 1.1 1.2 1.3 Saito S., Chai J. Y., Kim K. H., et al. (1997). "Metagonimus miyatai sp. nov. (Digenea: Heterophyidae), a new intestinal trematode transmitted by freshwater fishes in Japan and Korea". The Korean Journal of Parasitology 35: 223–232. doi:10.3347/kjp.1997.35.4.223.
  2. 2.0 2.1 2.2 2.3 Shimazu T. (2002). "Life cycle and morphology of Metagonimus miyatai (Digenea: Heterophyidae) from Nagano, Japan". Parasitology International 51(3):271–280. doi:10.1016/S1383-5769(02)00038-7.
  3. 3.0 3.1 3.2 3.3 Chai J. Y., Darwin Murrell K. & Lymbery A. J. (2005). "Fish-borne parasitic zoonoses: Status and issues". International Journal for Parasitology 35(11-12): 1233-1254. doi:10.1016/j.ijpara.2005.07.013.
  4. "Metagonimiasis - About the Disease - Genetic and Rare Diseases Information Center". Archived from the original on 17 May 2022. Retrieved 7 September 2023.
  5. "CDC - DPDx - Metagonimiasis". 21 January 2019. Archived from the original on 7 June 2023. Retrieved 7 September 2023.
  6. Mahanta, Jagadish (2022). "Metagonimiasis". Textbook of Parasitic Zoonoses. Springer Nature. pp. 309–316. ISBN 978-981-16-7204-0. Archived from the original on 10 September 2023. Retrieved 7 September 2023.