Ranavirus (family Iridoviridae) is a genus of pathogens of poikilotherms, and some ranaviruses may play a role in widespread mortality of amphibians. Ecology of viral transmission in amphibians is poorly known but can be addressed through experimentation in the laboratory. In this study, we use the Ranavirus frog virus 3 (FV3) as an experimental model for pathogen emergence in naïve populations of tadpoles. We simulated emerging disease by exposing tadpoles of the Italian agile frog (Rana latastei), to the North American Ranavirus FV3. We demonstrated that mortality occurred due to viral exposure, exposure of tadpoles to decreasing concentrations of FV3 in the laboratory produced dose-dependent survival rates, and cannibalism of virus-carrying carcasses increased mortality due to FV3. These experiments suggest the potential for ecological mechanisms to affect the level of exposure of tadpoles to Ranavirus and to impact transmission of viral pathogens in aquatic systems.
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VIROLOGY|
October 01 2004
RESPONSE OF THE ITALIAN AGILE FROG (RANA LATASTEI) TO A RANAVIRUS, FROG VIRUS 3: A MODEL FOR VIRAL EMERGENCE IN NAÏVE POPULATIONS Open Access
Peter B. Pearman;
Peter B. Pearman
4
1 Zoologisches Institut, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
2 Current address: Michigan Natural Features Inventory—Zology and Department of Fisheries and Wildlife, 345 Giltner Hall, Michigan State University, East Lansing, Michigan 48824, USA
4 Corresponding author (email: [email protected])
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Trenton W. J. Garner;
Trenton W. J. Garner
1 Zoologisches Institut, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
3 Current address: Wildlife Epidemiology, Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, UK
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Monika Straub;
Monika Straub
1 Zoologisches Institut, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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Urs F. Greber
Urs F. Greber
1 Zoologisches Institut, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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J Wildl Dis (2004) 40 (4): 660–669.
Article history
Received:
November 21 2003
Citation
Peter B. Pearman, Trenton W. J. Garner, Monika Straub, Urs F. Greber; RESPONSE OF THE ITALIAN AGILE FROG (RANA LATASTEI) TO A RANAVIRUS, FROG VIRUS 3: A MODEL FOR VIRAL EMERGENCE IN NAÏVE POPULATIONS. J Wildl Dis 1 October 2004; 40 (4): 660–669. doi: https://doi.org/10.7589/0090-3558-40.4.660
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