الفهرس 
Introduction
Classification of saprolegniaOnly 14 pages are availabe for public view
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Abstract
1. Survey for Microorganisms Associated with the Nile Tilapia Fish Eleven sites of the Nile tilapia commercial earthen pond farms situated within Kafr El-Sheikh Governorate, where numerous commercial Nile tilapia intensive culture ponds are located, were surveyed during the winter of 2002 for microbes associated with Nile tilapia fish. More than 20 fungal isolates belonging to different genera and species including Saprolegnia, Trichoderma, Alternaria spp., Penicillium, Fusarium sp., Fusarium semitectum (= F. incarnatum), Cladosporium, Phoma, Nigrospora, Aspergillus niger and Aspergillus flavus in addition to five bacteria were isolated from naturally diseased fish. 2. Isolation of the causal organisms 2.1. Isolation of Saprolegnia sp. In the winter season of 2002, an attempt was made to isolate Saprolegnia sp. from moderately infected fish, water, and feed sampled from the saprolegniasis-affected pond. Saprolegnia sp. was successfully recovered from the infected fish and pond water samples but was not found in the feed samples.