Survey on the larval trematodes found in the fresh water snails in Edfina Behera Governorate, Egypt

ABSTRACT

The total percentage of infestation with larval trematodes was 64.5% in Bulinus truncatus, 44.3% in Biomphalaria alex and rina, 27.3% in Melania tuberculata, 19.4% in Lymnaea caillaudi, 16.7% in Physa acuta and 5.5% in Cleopatra spp. The seasonal incidence of cercariae was 65.0% in summer and 11.6% during spring and 0% in winter. The Cercariae, which were shedded from naturally infected fresh water snails in Edfina [Behaira Governorate] were Xiphidio cercaria from Bulinus truncatus, Nephrostome ramosum cercaria from B. truncatus, Cercaria vivax from Lymnaea caillaudi, Gymnocephala cercaria from Melania tuberculata, Echinostomatidae cercaria from Physa acuta and B. truncatus, Schistosoma mansoni cercaria from Biomphalaria alex and rina, Fasciola gigantica cercaria from Lymnaea caillaudi, Amphistome cercaria from Bulinus truncatus and Cleopatra spp. cercaria tetragl and is from Lymnaea caillaudi