| ecological studies in madagascar of biomphalaria pfeifferi, intermediate host of schistosoma mansoni. 2. biology and dynamics in the non-endemic area of antananarivo. | the region of antananarivo, where schistosomiasis is not yet endemic, is compared to ambositra, a well established focus of s. mansoni, with regard to climate, hydrology and snail habitats. higher mean temperatures and a more pronounced dry season in antananarivo contribute to sometimes less favourable hydrological conditions. biomphalaria is found in very few and limited habitats. population dynamics were followed up in selected habitats and showed ecological parameters comparable to those of t ... | 1978 | 747438 |