Survival of Aeromonas salmonicida in river water |
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Authors: | D. Allen-Austin B. Austin R.R. Colwell |
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Affiliation: | Department of Microbiology, University of Maryland, College Park, MD 20742, U.S.A.;Ministry of Agriculture, Fisheries and Food, Directorate of Fisheries Research, Fish Diseases Laboratory, Weymouth, Dorset DT4 8UB, U.K. |
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Abstract: | Abstract By definition, Aeromonas salmonicida is found in fish but never in surface water. However, this does not explain the reason for explosive out-breaks of furunculosis among populations of salmonid fish which have never been exposed to the disease. Evidence is presented, from laboratory-based experiments, which show that A. salmonicida survives in freshwater, beyond the period necessary for plate counts to reach zero. These cells may subsequently be re-activated by the addition of nutrient. It may be assumed, therefore, that A. salmonicida survives outside of fish, by entering a dormant phase. |
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Keywords: | Dormancy of Aeromonas salmonicida dormancy of Aeromonas in water furunculosis, dormancy in water |
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