Год выпуска: 2012 Автор: Shawky Aboelhadid Издательство: LAP Lambert Academic Publishing Страниц: 144 ISBN: 9783659299926 Описание During the period from May 2002 to April 2003, a number of 14075 freshwater snails were examined to investigate the cercarial infection rate, seasonality and description of it. A number of 277 (1.927%) snail were found to be infected. The infection rate between different freshwater snails was high in Lymnaea cailliaudi (8.208%), followed by Bulinus truncatus (5.500%), then Melania tuberculata (5%), Lanistes carinatus (3.511%), Cleopatra bulimoides (1.078%) and the lowest in Biomophilaria alexanderina (0.963%). Two snail species were found free from any infection during the period of the study, Physa acuta and Vivipara unicolor. In the present study, the obtained cercariae were classified into: 2 Amphistome cercariae, 2 Parapleurolophocercous cercaria, 3 Gymnocephalus cercariae, 1 Distome cercaria, 2 Echinostome cercariae, 8 Furcocercous cercariae and 10 Xiphidiocercariae. Twelve species of cercariae were found infecting Cleopatra bulimoides, which are Megalodiscus sp. cercaria,... |