Studies on the infectivity of Fasciola hepatica miracidia to Lymnaea truncatula. Attachment and penetration of miracidia into non-infected and infected snails.

Fasciola hepatica miracidia labelled in vivo with radioselenium have been used in studies on the capacity of the miracidia to attach to and penetrate the tegument of infected compared with non-infected host snails (Lymnaea truncatula). The results show that the penetration of the larvae into the snail tissue is not influenced by an already existing infection, regardless of its developmental stage.