Korean J Parasitol.
2008 Mar;46(1):49-53. 10.3347/kjp.2008.46.1.49.
Centrocestus formosanus (Digenea: Heterophyidae) Encysted in the Freshwater Fish, Puntius brevis, from Lao PDR
- Affiliations
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- 1Department of Parasitology, Kangwon National University College of Medicine, Chuncheon, Republic of Korea.
- 2Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, Republic of Korea. cjy@snu.ac.kr
- 3Department of Hygiene and Prevention, Ministry of Public Health, Vientiane, Lao PDR
- 4Department of Parasitology, College of Medicine, Korea University, Seoul, Republic of Korea.
- KMID: 1720552
- DOI: http://doi.org/10.3347/kjp.2008.46.1.49
Abstract
- The metacercariae of Centrocestus formosanus, a minute intestinal trematode of mammals and birds, were detected in the freshwater fish, Puntius brevis, from Vientiane Municipality, Lao PDR. The metacercariae were experimentally fed to mice, and adult flukes were recovered in their small intestines 7 days later. The adult flukes were morphologically characterized by having 32 (rarely 34) circumoral spines arranged in 2 alternative rows, a large bipartite seminal vesicle, an oval-shaped ovary, and an X-shaped excretory bladder. Based on these characters, the adults were identified as Centrocestus formosanus (Nishigori, 1924). The taxonomic significance of C. formosanus, in relation to a closely related species, C. caninus (Leiper, 1913), is briefly discussed. It has been first verified by adult worm recovery that C. formosanus is prevalent in Vientiane areas of Lao PDR, taking the freshwater fish, P. brevis, as a second intermediate host.
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