Cycle évolutif du trématode Echinostoma caproni Richard, 1964 (Echinostomatoidea).

Abstract

The life cycle of the Trematode Echinostomatoidea Echinostoma caproni Richard, 1964, develops under natural conditions in Madagascar in a bird Falco newtoni and in a Gastropod Biomphalaria pfeifferi. Metacercaries encyst in other Molluscs and in the kidney of an Amphibian Ptychadaena mascareniensis. The cycle has been reproduced experimentaly in France. The defivitive hosts are the white mouse, the rat and the chick. Biomphalaria galbrata is the first and the second intermediate host. Metacercaries encyst in different Molluscs and in the kidney of tadpoles of Rana esculenta. The larval stages are described. The cycle pattern and the morphology of larval stages are quite similar to those of Echinostoma liei Jeyarasasingam and coll., 1972.