title: Prevalence of zoonotic trematode metacercariae in freshwater fish from Gangwon-do, Korea.
abstract: The infection status of zoonotic trematode metacercariae was investigated in a total of 2,293 freshwater fish collected from 11 rivers or streams in 9 administrative regions of Gangwon-do, Korea for 5 years (2009-2013). All fish were collected by netting methods and examined using the artificial digestion methods. Clonorchis sinensis metacercariae were detected in 4 fish species, i.e., Pungtungia herzi, Squalidus japonicus coreanus, Acheilognathus rhombeus, and Ladislabia taczanowskii, from only Hantangang in Cheorwon-gun. Metagonimus spp. metacercariae were found in 1,154 (50.3%) fish and their average number per infected fish was 55.8. Among the positive fish species, especially Tribolodon hakonensis from Namdaecheon in Yangyang-gun and Plecoglossus altivelis from Osipcheon in Samcheok-si were most heavily infected. Centrocestus armatus metacercariae were detected in 611 (26.7%) fish and the average metacercarial burden per infected fish was 1,032. Two chub species, Zacco platypus and Zacco temminckii were highly and heavily infected with C. armatus metacercariae in almost all regions surveyed. Echinostoma spp. metacercariae were also found in 24 fish from a few localities, but their numbers per fish infected were very low. From the above results, it is confirmed that the metacercariae of intestinal flukes, especially Metagonimus spp. and C. armatus, were heavily infected, while C. sinensis metacercariae were rarely found in fish from Gangwon-do, Korea.
authors.affiliation: Division of Malaria and Parasitic Diseases, National Institute of Health, Centers for Disease Control and Prevention, Osong 363-951, Korea.
authors.forename: Shin-Hyeong
authors.initials: SH
authors.lastname: Cho
authors.affiliation: Division of Malaria and Parasitic Diseases, National Institute of Health, Centers for Disease Control and Prevention, Osong 363-951, Korea.
authors.forename: Won-Ja
authors.initials: WJ
authors.lastname: Lee
authors.affiliation: Department of Parasitology and Inha Research Institute for Medical Sciences, Inha University College of Medicine, Incheon 400-103, Korea.
authors.forename: Tong-Soo
authors.initials: TS
authors.lastname: Kim
authors.affiliation: Infection Disease Intelligence Division, Gangwon Institute of Health and Environment, Chuncheon 200-822, Korea.
authors.forename: Won-Seok
authors.initials: WS
authors.lastname: Seok
authors.affiliation: Infection Disease Intelligence Division, Gangwon Institute of Health and Environment, Chuncheon 200-822, Korea.
authors.forename: Taejoon
authors.initials: T
authors.lastname: Lee
authors.affiliation: Infection Disease Intelligence Division, Gangwon Institute of Health and Environment, Chuncheon 200-822, Korea.
authors.forename: Kyungjin
authors.initials: K
authors.lastname: Jeong
authors.affiliation: Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
authors.forename: Byoung-Kuk
authors.initials: BK
authors.lastname: Na
authors.affiliation: Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
authors.forename: Woon-Mok
authors.initials: WM
authors.lastname: Sohn
mesh_terms: D000818:Animals; D044822:Biodiversity; D005393:Fish Diseases / Q000453:epidemiology* / Q000469:parasitology*; D005399:Fishes; D005618:Fresh Water; D007723:Korea; D059208:Parasite Load; D015995:Prevalence; D014200:Trematoda / Q000145:classification* / Q000302:isolation & purification*; D014201:Trematode Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*
keywords: Clonorchis sinensis; Gangwon-do; Metagonimus spp. Centrocestus armatus; freshwater fish; metacercaria; zoonotic trematode