Habitats of Limnaea truncatula in England and Wales during Dry Seasons

Abstract

1. The complacent attitude that fluke is no longer a disease of importance is attacked on the grounds that the recent low incidence of the disease is largely due to a temporary scarcity of the intermediary, Limnaea truncatnla.2. A description is given of methods of making contacts, taking samples, and recording observations in a survey of typical habitats of L. truncatula in England and Wales.3. Twenty-two such habitats are described in some detail.4. These form the basis of a brief discussion on factors contributing to the ideal habitat, knowledge of which is desirable for the elaboration of new methods of control.5. A provisional map showing the distribution of liver fluke in England and Wales is appended.