Distribution and Abundance of Opisthorchis viverrini Metacercariae in Cyprinid Fish in Northeastern Thailand

Somchai Pinlaor; Sudarat Onsurathum; Thidarut Boonmars; Porntip Pinlaor; Nuttanan Hongsrichan; Apisit Chaidee; Ornuma Haonon; Wutipong Limviroj; Smarn Tesana; Sasithorn Kaewkes; Paiboon Sithithaworn

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자료유형: 학술저널

저자정보: Somchai Pinlaor (Khon Kaen University) Sudarat Onsurathum (Khon Kaen University) Thidarut Boonmars (Khon Kaen University) Porntip Pinlaor (Khon Kaen University) Nuttanan Hongsrichan (Khon Kaen University) Apisit Chaidee (Khon Kaen University) Ornuma Haonon (Khon Kaen University) Wutipong Limviroj (Khon Kaen University) Smarn Tesana (Khon Kaen University) Sasithorn Kaewkes (Khon Kaen University) Paiboon Sithithaworn (Khon Kaen University)

저널정보: 대한기생충학열대의학회 Parasites, Hosts and Diseases The Korean Journal of Parasitology Vol.51 No.6

발행연도: 2013.12

수록면: 703 - 710 (8page)

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To increase public health awareness for prevention of opisthorchiasis caused by eating raw freshwater fish, the distribution and abundance of Opisthorchis viverrini metacercariae (OV MC) was investigated in freshwater fish obtained from 20 provinces in northeastern Thailand between April 2011 and February 2012. A cross-sectional survey was conducted on 12,890 fish consisting of 13 species randomly caught from 26 rivers, 10 dams, and 38 ponds/lakes. Fish, were collected in each of the rainy and winter seasons from each province. Fish were identified, counted, weighed, and digested using pepsin-HCl. Samples were examined for OV MC by a sedimentation method, and metacercariae were identified under a stereomicroscope. OV MC were found in 6 species of fish; i.e., Cyclocheilichthys armatus, Puntius orphoides, Hampala dispar, Henicorhynchus siamensis, Osteochilus hasselti, and Puntioplites proctozysron from localities in 13 provinces. Among the sites where OV MC-infected fish were found, 70.0% were dams, 23.7% were ponds/lakes, and 7.7% were rivers. The mean intensity of OV MC ranged from 0.01 to 6.5 cysts per fish (or 1.3-287.5 cysts per kg of fish). A high mean intensity of OV MC per fish (>3 cysts) was found in 5 provinces: Amnat Charoen (6.5 cysts), Nakhon Phanom (4.3), Mukdahan (4.1), Khon Kaen, (3.5) and Si Sa Ket (3.4). In conclusion, OV MC are prevalent in natural cyprinid fish, with the infection rate varying according to fish species and habitats.

#Opisthorchis viverrini #metacercaria #foodborne trematode #cyprinid fish #distribution #intensity

참고문헌 (31)

참고문헌 신청

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