Chaos in disease outbreaks among prey.

Scientific Reports
Andreas EilersenKim Sneppen

Abstract

Epidemics are highly unpredictable, and so are real-world population dynamics. In this paper, we examine a dynamical model of an ecosystem with one predator and two prey species of which one carries a disease. We find that the system behaves chaotically for a wide range of parameters. Using the allometric mass scaling of animal and disease lifetimes, we predict chaos if (a) the disease is infectious enough to persist, and (b) it affects the larger prey species. This provides another example of chaos in a Lotka-Volterra system and a possible explanation for the apparent randomness of epizootic outbreaks.

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Citations

Jul 4, 2020·The European Physical Journal. E, Soft Matter·Andreas Eilersen, Kim Sneppen

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