Abdel-Haleem AA
The present study includes ultrastructural aspects of molluscicidal effects of wild botanic aqueous extract, namely Za’ater plant (Origanum syriacum) on the gametogenesis of two terrestrial slugs, giant grey slug Limax maximus and tree slug L. marginatus. L. marginatus was more susceptible to this plant than L. maximus (LC90 are 445.1 and 460.2 for L. marginatus and L. maximus respectively). The present results revealed that Za’ater’s extract had adverse effects on gametogenesis of the treated slugs, including marked inhibition of the various stages of gametogenesis, besides intracellular accumulation of the toxic agents of Za’ater-plant. Therefore, the treatment of the tested slugs with LC90 of Za’ater extract can be recommended for controlling such slugs in the field, instead of using chemical pesticides that continuously pollute the environment.
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