Transmission of Salmonid Whirling Disease by Birds Fed Trout Infected with Myxosoma cerebralis |
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Authors: | ROBERT L TAYLOR MARLEY LOTT |
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Institution: | Division of Veterinary Medicine, 5305 Mill Street, University of Nevada, Reno 89502 |
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Abstract: | SYNOPSIS. Mallard ducks, Anas platyrhynchos and a black crested night heron, Nycticorax nycticorax were fed trout infected with Myxosoma cerebralis (Hofer) in 2 separate experiments. Feces from the birds were deposited in troughs containing M. cerebralis -free mud as well as in 1 trough without mud. Spore suspensions were also added directly to mud in 1 trough and to another trough without mud. Susceptible rainbow trout, Salmo gairdneri , developed whirling disease in all troughs containing mud contaminated with M. cerebralis but remained free of infection when exposed to M. cerebralis in troughs without mud. This demonstrates the possibility of bird transmission of the organism causing whirling disease to previously non-contaminated waters. |
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Keywords: | Myxosoma cerebralis salmonid whirling disease transmission by waterfowl |
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