The penetration of Fasciola hepatica miracidia into the snail host Fossaria bulimoides. A scanning electron microscope study.

Snails of the species Fossaria bullimoides were exposed to miracidia of Fasciola hepatica for given periods of time. The course of penetration was followed by means of scanning electron microscopy. Topographical features of miracidial morphology were studied with emphasis on epidermal plates and body shape. Comparisons are made on the rate of penetration into this snail host.