Influence of Atrazine and Roundup pesticides on biochemical and molecular aspects of Biomphalaria alexandrina snails

► Biomphalaria alexandrina snails from laboratory bred colony in Medical Malacology Department. ► Atrazine and Roundup caused reduction in egg production of treated snails. ► Atrazine proved to be more toxic to B. alexandrina snails than Roundup. ► Two pesticide led to depletion of biochemical parameters in tissues of snails. ► The changes in the number, position of DNA bands induced by pesticides.