Abstract
The comparative susceptibility of the snail vector of intestinal schistosomiasis,
Biomphalaria pfeifferi to the action of extracts from Saudi Arabian Euphorbiales has been determined. Methanol and chloroform extracts of the plants tested (
Jatropha glauca, Euphorbia helioscopia and
Euphorbia schimperiana) were the most promising from the molluscicidal point of view with LD
50 values in the range 10–100 ppm.