Controlling snails which are the intermediate hosts of schistosomiasis is one of the strategies used to reduce disease incidence. Researchers are always seeking molluscicides of biological origin to avoid using chemical molluscicides which are toxic to the environment. The aim of this study is to investigate the molluscicidal activity of fungal species isolated from the habitat of Biomphalaria alexandrina snails. Fungal species were isolated from the inner tissues of B. alexandrina snails, and

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... rom the tissues of Eichhornia crassipes which is an aquatic plant associated with these snails. The results indicated that the ethyl acetate extracts of endozoic fungi and endophytic ones showed LC 90 values higher than 600 ppm and 400 ppm, respectively.