Studies on the ecology of Lymnaea tomentosa, the intermediate host of Fasciola hepatica. 1. History, geographical distribution, and environment.

Abstract

The role of Lymnaea tomentosa as the intermediate host of Fasciola hepatica is reviewed, and an account is given of its habitats and distribution in Australia. L. tomentosa lives and reproduces within the pH range 5-8, but appears to be more adapted to slightly acid conditions. The relationship of the snail to its biological environment is discussed and observations on its parasites and predators are recorded. The pathological effect of trematode infection of L. tomentosa is described.