Edwardsiella ictaluri Infection in Rainbow Trout (Oncorhynchus mykiss)

Authors : Oktay KESKİN

Pages : 649-653

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The aim of this study was to isolate Edwardsiella ictaluri from diseased rainbow trout obtained from a commercial farm in the Ankara region, Turkey. Growth of the microorganism after 36 h of incubation was higher and purer at 28 ºC than at 37 ºC on all the organs insert ignore into journalissuearticles values(liver, spleen, kidney); of the 10 fish examined. Three groups, each consisting of 3 fish were used for experimental infection. All the fish in Group I, which received a pure culture suspension, died after treatment. There were no clinical symptoms of the disease or deaths in Group II treated with 1/50 concentration of the pure culture or in Group III insert ignore into journalissuearticles values(control group); treated with 0.85% saline. The isolation of E. ictaluri from non-ictalurid fish and the fact that similar bacteria have been isolated from non-ictalurid fish in different countries indicate that the organism is a widespread pathogen. The results from this study show that rainbow trout are susceptible to E. ictaluri and there is a possibility of natural infection.
Keywords : Edwardsiella ictaluri, Oncorhynchus mykiss, natural infection