Abstract

To investigate the fauna and larval infection status of freshwater snails living in water stream and rice paddy, we collected 925 freshwater snails at 7 regions in Sejong and Daejeon at 2016 and 2017. From the survey, a total of 925 freshwater snails were identified as 6 families, 9 genus and 9 species. The collected ten species of freshwater mollusks were identified as Lymnaea pervia, Radix (Lymnaea) auricularia, Physa acuta, Cipangopaludina chinensis, Gyraulus convexiusculus, Hippeutis cantori, Segmentina hemisphaerula, Semisulcospira libertina, and Parafoussarulus manchuricus. The most populated snails was L. pervia and the second one was P. acuta. The cercariae of Paragonimus, Metagonimus and Echinostoma species were isolated from Semisulcospira, Gyraulus, Hippeutus, Parafoussarulus, Segmentina, Lymnaea and Radix collected at 3 regions among 7 surveyed regions. Collectively, this study presented that various species of freshwater snails and cercaria-infected snails are distributed at water stream and rice paddy at Sejong and Daejeon, and further investigation needs to be carried out to identify the fauna of freshwater snails in detail.