Notocotylus attenuatus (Rudolphi, 1809) Kossack, 1911

Site of infection: gizzard, intestine, cecum.

Locality: De Monte lagoon, Buenos Aires Province (Argentina).

Life history: H1: Physa acuta Draparnaud, 1805 . No H2- cercariae encyst on vegetation. Reference: Boero et al. (1972).

Comments: After an experimental study on infections of this trematode in ducks and rodents, Graczyk and Shiff (1993) felt it was unlikely that transmission in the wild could be dependent on mice and rats.