Human intestinal flukes Haplorchris taichui and Haplorchris pumilio in their intermediate hosts, freshwater snails of the families Thiaridae and Pachychilidae, in southern Thailand

摘要: The intestinal flukes Haplorchis taichui (Nishigori, 1924) and pumilio (Looss, 1899) (family Heterophyidae) are among the most important food-borne parasitic zoonoses found in Southeast Asia. Here, we report on a study of infection rates freshwater snails two Cerithioidean families Thiaridae Pachychilidae south Thailand. were collected by handpicking scooping every months for one year at several locations between January 2008 September 2009. snail samples examined infections lab shedding crushing methods. Parasite from 13 34 sampling sites. Nine species thiarid this study, viz. Melanoides tuberculatus (Muller, 1774) jugicostis (Hanley & Theobald, 1876), Thiara scabra 1774), Sermyla riqueti (Grateloup, 1840), Neoradina prasongi (Brandt, 1974) Tarebia granifera (Lamarck, 1822) as well four pachychilids, Brotia sp. 1, 2, wykoffi Adamietta housei (Lea, 1856). Among these only three (M. tuberculatus, M. N. prasongi) to be infected with parasites, while no record pachychilids. H. 0.59% (126/21,501) 0.12% (25/21,501) respectively, prasongi. 0.96% (89/9,227), 0.11% (1/920) 7.74% (36/465), respectively. was only, an rate 0.27% (25/9,227). (© 2011 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim)