Prevalence of Clonorchis sinensis Metacercariae in Freshwater Fish from Three Latitudinal Regions of the Korean Peninsula.
10.3347/kjp.2011.49.4.385
- Author:
Shin Hyeong CHO
1
;
Woon Mok SOHN
;
Byoung Kuk NA
;
Tong Soo KIM
;
Yoon KONG
;
Keeseon EOM
;
Won Seok SEOK
;
Taejoon LEE
Author Information
1. Division of Malaria and Parasitic Diseases, National Institute of Health, Centers for Disease Control and Prevention, Osong 363-951, Korea.
- Publication Type:Original Article
- Keywords:
Clonorchis sinensis;
metacercaria;
freshwater fish;
prevalence;
latitudinal level
- MeSH:
Animals;
Clonorchiasis/epidemiology/parasitology/*veterinary;
Clonorchis sinensis/*isolation & purification;
Fish Diseases/*epidemiology/parasitology;
Fishes;
Fresh Water;
Korea/epidemiology;
Metacercariae;
Prevalence
- From:The Korean Journal of Parasitology
2011;49(4):385-398
- CountryRepublic of Korea
- Language:English
-
Abstract:
A large-scale survey was conducted to investigate the infection status of fresh water fishes with Clonorchis sinensis metacercariae (CsMc) in 3 wide regions, which were tentatively divided by latitudinal levels of the Korean peninsula. A total of 4,071 freshwater fishes were collected from 3 regions, i.e., northern (Gangwon-do: 1,543 fish), middle (Chungcheongbuk-do and Gyeongsangbuk-do: 1,167 fish), and southern areas (Jeollanam-do, Ulsan-si, and Gyeongsangnam-do: 1,361 fish). Each fish was examined by the artificial digestion method from 2003 to 2010. In northern areas, only 11 (0.7%) fish of 2 species, Pungtungia herzi and Squalidus japonicus coreanus from Hantan-gang, Cheolwon-gun, Gangwon-do were infected with av. 2.6 CsMc. In middle areas, 149 (12.8%) fish were infected with av. 164 CsMc. In southern areas, 538 (39.5%) fish were infected with av. 159 CsMc. In the analysis of endemicity in 3 regions with an index fish, P. herzi, 9 (6.2%) of 146 P. herzi from northern areas were infected with av. 2.8 CsMc. In middle areas, 34 (31.8%) of 107 P. herzi were infected with av. 215 CsMc, and in southern areas, 158 (92.9%) of 170 P. herzi were infected with av. 409 CsMc. From these results, it has been confirmed that the infection status of fish with CsMc is obviously different among the 3 latitudinal regions of the Korean peninsula with higher prevalence and burden in southern regions.
