The first record of Centrocestus formosanus (Nishigori, 1924) (Digenea: Heterophyidae) in Egypt.

摘要: The life cycle of Centrocestus formosanus (Digenea: Heterophyidae) was to be successfully completed in the laboratory present study. Hundreds thiarid snail, Melanoides tuberculata, were collected from main water course Mansouriya Canal, Giza Governorate, Egypt. snails individually exposed artificial light determine possible infection with trematode larvae. Fifteen found infected opthalmopleurolophocercous cercariae (infection index 1.97). These shedded and placed an aquarium fish intermediate host, Gambusia affinis, obtain metacercariae encysted gills. gills fed albino rats, Rattus norvegicus, adult worms. Adult worms recovered small intestine rats at 7 days after they identified as based on morphological characteristics comparison previous descriptions literature. They small, 518 × 324 μm average size had characteristic 32 circumoral spines around oral sucker. developmental stages, adults, this heterophyid fluke given here. Therefore, presence is confirmed for first time Egypt by