Resistance to the drought of the Bulinus molluscs, human and animal trematodosis vectors in Senegal

Abstract

Laboratory experiments have shown that Bulinus truncatus, B. globosus and B. umbilicatus intermediate hosts of trematodosis in Senegal have a power resistance to the drought. Ten to 48 % of these molluscs particularly the medium sized ones (6 to 8 mm) have endured this drought which has lasted 7 to 8 months. This phenomenon has a great importance in the epidemiological study of human and animal trematodosis particularly in the Sahelian areas.