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  • Title: Studies on the molluscicidal actvity of Calendula micrantha officinalis (Compositae) on fascioliasis transmitting snails.
    Author: Abd-El-Megeed KN.
    Journal: J Egypt Soc Parasitol; 1999; 29(1):183-92. PubMed ID: 12561898.
    Abstract:
    The molluscicidal activity of ethanolic extracts of Calendula m. officinalis (flowers and leaves) was used as plant molluscicides against Lymnaea cailliaudi. The results indicated that flowers extract possess a molluscicidal activity more than leaves extract and the LC50 was 35 and 52.17 ppm respectively. The mortality rate of exposed snails was increased by prolongation of the exposure time. The molluscicidal effect resulted in enhancing energy utilization and nutrient consumption since glucose, lipids, proteins and triglycerids were greatly reduced. The stomach and digestive gland of the treated L. cailliaudi snails were greatly altered.
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