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Fungal pathogen transmission dynamics in North American salamanders: Mathematical insights for disease management

Author

Listed:
  • Chowdhury, Mohammad Mihrab
  • Gray, Matthew J.
  • Carter, Edward Davis
  • Woodhams, Douglas C.
  • McCartney, Julia A.
  • Surles, James G.
  • Nelms, K McKensie
  • Gan, Hao
  • Peace, Angela

Abstract

The transmission dynamics of infectious diseases in amphibians, particularly those with multiple transmission routes, are complex and can rapidly evolve into epizootics. Here, we consider the eastern newt (Notophthalmus viridescens) and the emerging fungal pathogen Batrachochytrium salamandrivorans (Bsal) as a host for amphibians and a pathogen for infectious diseases, respectively. The susceptible population can become infected by Bsal in two ways: direct contact with infected newts or by environmental zoospores. To properly depict the impact of Bsal on amphibians, we categorized the host newt population into distinct life stages: larvae, eft, and adult. Each life stage represents unique traits and habitat preferences. Considering these, we employed an interdisciplinary approach by combining mathematical modeling and laboratory experiments to explore the deterministic transmission dynamics of Bsal in amphibians. We developed a compartmental model employing a system of ordinary differential equations comprising life cycle and disease dynamics.

Suggested Citation

  • Chowdhury, Mohammad Mihrab & Gray, Matthew J. & Carter, Edward Davis & Woodhams, Douglas C. & McCartney, Julia A. & Surles, James G. & Nelms, K McKensie & Gan, Hao & Peace, Angela, 2025. "Fungal pathogen transmission dynamics in North American salamanders: Mathematical insights for disease management," Ecological Modelling, Elsevier, vol. 501(C).
    • Handle: RePEc:eee:ecomod:v:501:y:2025:i:c:s0304380025000110
    DOI: 10.1016/j.ecolmodel.2025.111028
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