English to French Science Zoology

Il s'agit d'un document sur les parasites des coques.
Ce terme revient souvent, et je n'arrive pas à trouver quelque chose qui colle bien dans ce contexte. Merci pour votre aide !

The parasite stage living in bivalves (including cockles) is the oocyst, which occurs within host haemocytes, while the other parasitic stages occur in the crabs.

Uninucleate, binucleate cells and multinucleate plasmodia occur throughout the connective tissue of digestive gland, gills and gonad; the parasite has not been reported in epithelia.