On the Control over the Distribution of Ticks Based on the Extensions of the KISS Model

Vassili N. Kolokoltsov ()
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Vassili N. Kolokoltsov: Faculty of Computation Mathematics and Cybernetics, Moscow State University, 119991 Moscow, Russia

Mathematics, 2023, vol. 11, issue 2, 1-25

Abstract: Ticks and tick-borne diseases present a well-known threat to the health of people in many parts of the globe. The scientific literature devoted both to field observations and to modeling the propagation of ticks continues to grow. To date, the majority of the mathematical studies have been devoted to models based on ordinary differential equations, where spatial variability was taken into account by a discrete parameter. Only a few papers use spatially nontrivial diffusion models, and they are devoted mostly to spatially homogeneous equilibria. Here we develop diffusion models for the propagation of ticks stressing spatial heterogeneity. This allows us to assess the sizes of control zones that can be created (using various available techniques) to produce a patchy territory, on which ticks will be eventually eradicated. Using averaged parameters taken from various field observations we apply our theoretical results to the concrete cases of the lone star ticks of North America and of the taiga ticks of Russia. From the mathematical point of view, we give criteria for global stability of the vanishing solution to certain spatially heterogeneous birth and death processes with diffusion.

Keywords: propagation of ticks; ticks’ growth control; critical patch size; KISS model; control zones; vector-valued diffusion models; discontinuous diffusion coefficients; stability of zero solution (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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