Infection Status with Clonorchis sinensis Metacercariae in Fish from Tamjin-gang (River) in Jeollanam-do, Republic of Korea

• Published in: Korean journal of parasitology Vol. 56; no. 2; pp. 183 - 188
• Main Authors: Yoon, Ki-Bok, Lim, Hyun-Cheol, Jeon, Doo Young, Park, Sook, Cho, Shin-Hyeong, Ju, Jung-Won, Shin, Sung-Shik, Na, Byoung-Kuk, Sohn, Woon-Mok
• Format: Journal Article
• Language: English
• Published: Korea (South) 대한기생충학열대의학회 01.04.2018; The Korean Society for Parasitology and Tropical Medicine
• Subjects: Original; Clonorchis sinensis; index fish; freshwater fish; Pungtungia herzi; Tamjin-gang; metacercaria
• ISSN: 0023-4001; 1738-0006
• DOI: 10.3347/kjp.2018.56.2.183

The present study was performed to investigate the infection status with metacercariae (CsMc) in fishes from 2 sites, the middle and lower reaches, of Tamjin-gang (River) in Jeollanam-do, the Republic of Korea. Total 1,132 fishes in 22 species were collected from the middle reaches in Jangheung-gun for 4 years (2014-2017) and 517 fishes in 17 species were also collected from the lower reaches in Gangjin-gun in 2014 and 2017. They were all individually examined with the artificial digestion method in our laboratory. CsMc were detected in 322 (28.5%) out of 1,132 fishes from Jangheung-gun, and in 161 (31.1%) out of 517 fishes from Gangjin-gun, and their densities were 51 and 57 per fish infected each. In the fish species with CsMc, positive rates were 61.5% in Jangheung-gun and 62.7% in Gangjin-gun. A total of 222 were examined and they were all infected with CsMc. The average intensity was 103 CsMc in the index fish, (95 in Jangheung-gun and 121 in Gangjin-gun). In bimonthly examined in 2017, the intensity was commonly most higher in March in 2 surveyed sites, however the significant seasonal endemicity was not showed. Conclusively, it was confirmed that CsMc is more or less prevalent in fishes from Tamjin-gang and their endemicity is higher in fish from the lower reaches in Gangjin-gun than the middle reaches in Jangheung-gun in Jeollanam-do, Korea.