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Korean J Parasitol. 2009 Sep;47(3):249-257.
Published online 2009 August 28.  doi: 10.3347/kjp.2009.47.3.249.
Copyright © 2009 by The Korean Society for Parasitology
Fishborne Trematode Metacercariae in Freshwater Fish from Guangxi Zhuang Autonomous Region, China
Woon-Mok Sohn,1 Keeseon S. Eom,2 Duk-Young Min,3 Han-Jong Rim,4 Eui-Hyug Hoang,5 Yichao Yang,6 and Xueming Li6
1Department of Parasitology and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
2Department of Parasitology and Medical Research Institute, Chungbuk National University School of Medicine, Cheongju 360-763, Korea.
3Department of Parasitology, Hanyang University College of Medicine, Seoul 133-791, Korea.
4Department of Parasitology, College of Medicine, Korea University, Seoul 136-705, Korea.
5Korea Association of Health, Seoul 157-704, Korea.
6Guangxi Centre for Disease Prevention and Control, Nanning, Guangxi, China.

Corresponding author (Email: wmsohn@gnu.ac.kr )
Received April 06, 2009; Revised May 16, 2009; Accepted June 05, 2009.

Abstract

A survey was performed to investigate the infection status of fishborne trematode (FBT) metacercariae in freshwater fish from Guangxi Zhuang Autonomous Region, China. A total of 307 freshwater fish of 31 species were collected from 5 administrative regions of Guangxi Zhuang Autonomous Region. They were examined by artificial digestion method from July 2003 to August 2004. No metacercariae were detected in fish from Fusui-xian. In fish from Mashan-xian and a market in Nanning, 3 species of metacercariae, Haplorchis taichui,Haplorchis pumilio, and Centrocestus formosanus, were mainly detected. Metacercariae (8 in number) of Clonorchis sinensis were found in 1 Chanodichthys dabryi purchased from a market in Nanning. In fish from Yangshuo, Metagonimus yokogawai metacercariae were detected from all 18 fish species examined. Total 13 C. sinensis metacercariae were found in 3 out of 10 Hemibarbus maculatus from Yangshuo. All 7 Zacco platypus from Yangshuo were infected with 8-112 Echinochasmus perfoliatus metacercariae. In fish from Binyang-xian, H. pumilo metacercariae were mainly detected in all 5 fish species examined, and only 1 metacercaria of C. sinensis was found in a Hemiculter leucisculus. From the above results, it was confirmed that some species of freshwater fish play a role of second intermediate hosts for FBT in Guangxi Zhuang Autonomous Region, China. In particular, 4 species of intestinal flukes, M. yokogawai,H. taichui,H. pumilio, and C. formosanus, were prevalent in fish hosts, whereas C. sinensis metacercariae were detected only in 3 fish species.

Keywords: Haplorchis taichui, Haplorchis pumilio, Centrocestus formosanus, Metagonimus yokogawai, Clonorchis sinensis, fishborne trematode metacercariae, freshwater fish, Guangxi Zhuang Autonomous Region, China.
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