Metagonimus takahashii is a species of a trematode, or fluke worm, in the family Heterophyidae.
It is a human parasite causing metagonimiasis.
Distribution This species occurs in Japan and Korea.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. .
Life cycle The first intermediate hosts of Metagonimus takahashii include freshwater snails Semisulcospira coreana and Koreanomelania nodifila.Waikagul J. & Thaekham U. (2014). Approaches to Research on the Systematics of Fish-Borne Trematodes. Academic Press, 130 pp., page 97.
The second intermediate host include freshwater fish: crucian carp Carassius carassius, common carp Cyprinus carpio, and Tribolodon brandtii.
Natural definitive hosts are humans. Experimental definitive hosts are: mice, and dogs.Chai J.-Y., Guk S.-M., Han E.-T., et al. (2000). "Surface ultrastructure of Metagonimus takahashii metacercariae and adults". The Korean Journal of Parasitology 38(1): 9-15. .
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