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Infection Status of Zoonotic Trematode Metacercariae in Fishes from Vientiane Municipality and Champasak Province in Lao PDR

 Keeseon S. Eom  ;  Han-Sol Park  ;  Dongmin Lee  ;  Woon-Mok Sohn  ;  Tai-Soon Yong  ;  Jong-Yil Chai  ;  Duk-Young Min  ;  Han-Jong Rim  ;  Bounnaloth Insisiengmay  ;  Bounlay Phommasack 
 KOREAN JOURNAL OF PARASITOLOGY, Vol.53(4) : 447-453, 2015 
Journal Title
Issue Date
Animals ; Female ; Fish Diseases/epidemiology ; Fish Diseases/parasitology* ; Laos ; Male ; Metacercariae/classification ; Metacercariae/genetics ; Metacercariae/growth & development ; Metacercariae/isolation & purification* ; Trematoda/classification ; Trematoda/genetics ; Trematoda/growth & development ; Trematoda/isolation & purification* ; Trematode Infections/epidemiology ; Trematode Infections/parasitology ; Trematode Infections/veterinary* ; Vietnam ; Zoonoses/parasitology
Centrocestus formosanus ; Haplorchis pumilio ; Haplorchis taichui ; Haplorchis yokogawai ; Lao PDR ; Opisthorchis viverrini ; Procerovum varium ; fishborne trematode (FBT) metacercaria
The infection status of fishborne zoonotic trematode (FZT) metacercariae was investigated in fishes from 2 localities of Lao PDR. Total 157 freshwater fishes (17 species) were collected in local markets of Vientiane Municipality and Champasak Province in December 2010 and July 2011, and each fish was examined by the artificial digestion method. Total 6 species of FZT metacercariae, i.e., Opisthorchis viverrini, Haplorchis taichui, Haplorchis yokogawai, Haplorchis pumilio, Centrocestus formosanus, and Procerovum varium, were detected in fishes from Vientiane Municipality. The metacercariae of O. viverrini were detected in 50 (49.5%) out of 101 fishes (6 species), and their average number was 154 per fish infected. The remaining 5 species of heterophyid metacercariae were detected in 36.8%, 65.8%, 9.4%, 23.9%, and 5.1% fishes examined, and their average densities were 12, 1,038, 4, 15, and 13 per infected fish, respectively. In fishes from Champasak Province, 3 species of FZT metacercariae, i.e., O. viverrini, H. taichui, and H. yokogawai, were detected. Only 2 O. viverrini metacercariae were found in only 1 Barbonymus schwanefeldi. The metacercariae of H. taichui and H. yokogawai were detected in 60.0% and 50.0% of fishes examined, and their average densities were 47 and 28 per fish infected. By the present study, it has been confirmed that several species of FZT metacercariae are prevalent in fishes from Vientiane Municipality, with P. varium being a new member of FZT in Lao PDR. In comparison, FZT metacercariae are less prevalent in fishes from Champasak Province.
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1. College of Medicine (의과대학) > Dept. of Environmental Medical Biology (환경의생물학교실) > 1. Journal Papers
Yonsei Authors
Yong, Tai Soon(용태순) ORCID logo https://orcid.org/0000-0002-3445-0769
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