الفهرس | Only 14 pages are availabe for public view |
Abstract 1- A total number of 755 fishes included, 450 0. niloticus and 305 C gariepinus of different life stages, were obtained alive from Abbassa fish farms and Sahl EI-Hosainia private fish farm during the period from July 2009 to November 2010. These fishes were subjected to clinical, P .M., mycological and histopathological examinations. 2- The isolated fungi from infected fishes were Saprolegnia spp., A.niger, A.Flavus, A.ochraceus, Afumigatus , Penicillium sp., Cladosporium sp., Alternaria sp., Candida albicans and Zygomycetes group (Mucor sp.,Rhizopus sp. and Absidia sp.). 3- The prevalence of the total fungal infection was (32.7%) among the examined fishes, it was (49.3%) among examined 0. niloticus and (50.7%) among examined C gariepinus. 4- The prevalence of different fungi among infected fishes, showed that C gariepinus possessed the highest prevalence rate of infection (18.6%) , (7.7%) , (6.9%) , (5.3%) , (4%) and (2.8%) for A.niger, Zygomycetes group , A.flavus, penicillium sp., Afumigatus and A.ochraceus respectively.While it was lowest (1.6%) for each of Cialbicans and Alternaria sp. followed by 2% for cladosporium 5P. .In case of 0. niloticus the highest prevalence infection rate was 13.4% , 11%, 8.1 %, 7.7%, 2.8% and 2.4% for A.niger, Zygomycetes group, penicillium sp., A.flavus, Afumigatus and Saprolegnia spp. respectively, while the lowest percentage was 0% for cladosporium sp. followed by 1.6% for A.ochraceus,then 1.2% for each of Calbicans, and Alternaria sp . |