Spot light survey on fresh-water snails of medical importance in Al Fayoum governorate, Egypt

ABSTRACT

In a survey carried out during summer and autumn of 2004, for snails of medical importance, nine species were recovered. They were Biomphalaria alexandrina, B. glabrata, B. pfeifferi, Bulinus truncatus, B. forskalii, Lymnaea natalensis, Bellamya [=Vivipara] unicolor, Physa acuta and Hydrobia mesaensis. Parasitological examination revealed that B. alexandrina, B. glabrata and L. natalensis harboured immature stages of their concerned trematode parasites. Moreover, P. acuta harboured the immature stage of the nematode parasite Parastrongylus cantonensis