Ultrastructural and Histopathological effect of common pesticide and molluscicide on eye, eye tentacles and cerebral ganglia of Theba pisana land snail (Mollusca,Gastropoda) inhabiting in Kafr-El Sheikh, Egypt

Abstract

Land snails, Theba pisana, Biomajic, Agrinate, eye histopathology and cerebral ganglia ultrastructure The land snail Theba pisana, is one of the most injurious snails, as it feeds on field crops. The traditional control methods rely on the pesticides. The most commonly used molluscicide in Egypt are Agrinate 24% (Methomyl) and Biomagic (Metarhizium anisopliae). The present study aimed to fined and evaluate the effect of pesticide on T. pisana land snail in order to predict the hazard effects of these pesticides on the non-target organisms. The exposure of adult T. pisana to sub lethal dose of Biomajic (Metarizhium anisoplae) and Agrinate caused varying degrees of ulturastrcture and histopathological changes in the examined organs (eyes, tentacles and cerebral ganglia). The exposure to both pesticides for 14 days leads to loss of the architecture of eye and eye stalk in addition, both of them displayed multiple degenerative changes in cereberal gangalia of the snail, but, molluscicide Agrinate 24% methomyl was more effective mollscicide against T. pisana than Biomajic.