Effect of sublethal concentration of atriplex halimus [chenopediaceae] on Biomphalaria alexandrina, the snail-vector of Schistosoma mansoni in Egypt

ABSTRACT

The effect of sublethal concentrations of Atriplex halimus on the mortality rate, longevity, egg production of Biomphalaria alexandrina and hatchability of their eggs was studied. The sublethal concentrations of Atriplex caused a reduction in the survival rates, longevity and egg production of B. alexandrina. The hatchability of snail eggs exposed to the tested plant was decreased by increasing its concentrations