EcoHealth

, Volume 8, Issue 3, pp 301–319 | Cite as

Phylogeny, Life History, and Ecology Contribute to Differences in Amphibian Susceptibility to Ranaviruses

  • Jason T. Hoverman
  • Matthew J. Gray
  • Nathan A. Haislip
  • Debra L. Miller
Original Contribution

Abstract

Research that identifies the potential host range of generalist pathogens as well as variation in host susceptibility is critical for understanding and predicting the dynamics of infectious diseases within ecological communities. Ranaviruses have been linked to amphibian die-off events worldwide with the greatest number of reported mortality events occurring in the United States. While reports of ranavirus-associated mortality events continue to accumulate, few data exist comparing the relative susceptibility of different species. Using a series of laboratory exposure experiments and comparative phylogenetics, we compared the susceptibilities of 19 amphibian species from two salamander families and five anurans families for two ranavirus isolates: frog virus 3 (FV3) and an FV3-like isolate from an American bullfrog culture facility. We discovered that ranaviruses were capable of infecting 17 of the 19 larval amphibian species tested with mortality ranging from 0 to 100%. Phylogenetic comparative methods demonstrated that species within the anuran family Ranidae were generally more susceptible to ranavirus infection compared to species from the other five families. We also found that susceptibility to infection was associated with species that breed in semi-permanent ponds, develop rapidly as larvae, and have limited range sizes. Collectively, these results suggest that phylogeny, life history characteristics, and habitat associations of amphibians have the potential to impact susceptibility to ranaviruses.

Keywords

Anura Caudata Emerging infectious disease Frog virus 3 Iridoviridae Novel strain Phylogeny Reservoir 

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Copyright information

© International Association for Ecology and Health 2011

Authors and Affiliations

  • Jason T. Hoverman
    • 1
    • 2
  • Matthew J. Gray
    • 2
  • Nathan A. Haislip
    • 2
    • 4
  • Debra L. Miller
    • 2
    • 3
    • 5
  1. 1.Department of Ecology and Evolutionary BiologyUniversity of ColoradoBoulderUSA
  2. 2.Center for Wildlife Health, Department of Forestry, Wildlife, and FisheriesUniversity of TennesseeKnoxvilleUSA
  3. 3.Veterinary Diagnostic and Investigational Laboratory, College of Veterinary MedicineUniversity of GeorgiaGeorgiaUSA
  4. 4.Department of EctothermsFort Worth ZooFort WorthUSA
  5. 5.Department of Biomedical and Diagnostic Sciences, College of Veterinary MedicineUniversity of TennesseeKnoxvilleUSA

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