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Abstract
The viabilities of golden shiner virus (GSV), chum salmon virus (CSV), oyster reovirus 13P2 (13P2). and catfish reovirus (CRV) were compared following viruses incubation in pond water samples held at 4°. 20°, 25°, and 30°C for one month. At the three higher temperatures tested, viral infectivity was lost by day 15 for GSV, day 20 for CSV, and day 10 for CRV and 13P2. At 4°C. no infectious GSV was detected at day 15, while the other viruses showed little or no loss of infectivity during the 30-day incubation period. The survival of these viruses in natural waters appears to be sufficient to sustain fish-to-fish transmission.