Control measures against lymnaea caillaudi

ABSTRACT

The molluscicidal effect of some plants and chemicals on the snail intermediate hosts of Fasciola sp. in Egypt was tried. It was observed that the mortality rate have reached its maximum in the concentration of 10 part per million of copper sulfate after 12 hours and at 1.0 ppm of Bayluscide after 24 hours at room temperature [14 - 23C]. Concerning the effect of plant extracts, it was observed that the leaf infusion of Amaryllis at the concentration of 1 500 had the mortality rate of 85% after 24 hours, while the bulb infusion was 75%. The infusion of Ambrosia maritima [Damsissa] had a lethal effect of 67.5% at a concentration of 1 500 after 24 hours. The molluscicidal effect of Typha was 80% after 24 hours, while its rhizomes extracts was 82.5%. In case of and ropogon citratus [lemon grass], the mortality rate was 80% and 47.5% from leaves and rhizomes, respectively, at a concentration of 1 100 after 24 hours