| seasonal variation of metacercariae in cyprinoid fish from kwae noi bamroongdan dam, phitsanulok province, northern thailand. | abstract. a seasonal investigation of the occurrence of metacercariae in cyprinoid fish was conducted at the kwae noi bamroongdan dam, phitsanulok province, northern thailand during december 2008-august 2009. a total 361 cyprinoid fish from 10 species were examined by artificial digestion method evaluating for metacercariae. the metacercariae determined were haplorchis taichui, haplorchis pumilio, haplorchoides sp and centrocestus caninus. the prevalence of metacercariae ranged from 76.5% to 82. ... | 2011 | 21323166 |