Dynamics of a non-autonomous stochastic mutualism model with jumps

Authors

  • Oleksandr Borysenko Taras Shevchenko National University of Kyiv
  • Olga Borysenko National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine

DOI:

https://doi.org/10.17721/1812-5409.2026/1.3

Keywords:

stochastic mutualism model, global solution, stochastic ultimate boundedness, stochastic permanence, extinction, non-persistence in the mean, weak and strong persistence in the mean

Abstract

In nature, we can find many examples where the interaction of two or more species is to the advantage of all. Mutualism occurs when one species provides some benefit in exchange for some benefit, for example, ants and aphids, in which the ants obtain honeydew food resources excreted by aphids while the aphids obtain increased survival by the non-trophic service of ant defense against natural enemies of the aphids. Mathematical deterministic mutualism models are widely used to study the dynamics of such population systems. In real life, there is a lot of randomness and stochasticity, such as environmental noise, so using stochastic models is more suitable. Suppose we want to take into account abrupt environmental perturbations, such as epidemics, fires, earthquakes, etc., in the considered models. In that case, we must introduce Poisson noises into population models to describe such discontinuous systems. So, we take into account not only “small” jumps, corresponding to the centered Poisson measure, but also the “large” jumps, corresponding to the non-centered Poisson measure. The existence and uniqueness of the global positive solution are proved for the system of stochastic differential equations describing a non-autonomous mutualism model disturbed by white noise, centered, and non-centered Poisson noises. We obtain sufficient conditions of stochastic ultimate boundedness, stochastic permanence, non-persistence in the mean, weak and strong persistence in the mean, and extinction of the solution to the considered system.

Pages of the article in the issue: 17 - 26

Language of the article: English

References

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Published

2026-06-05

Issue

Section

Algebra, Geometry and Probability Theory

How to Cite

Borysenko, O., & Borysenko, O. (2026). Dynamics of a non-autonomous stochastic mutualism model with jumps. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics, 82(1), 17-26. https://doi.org/10.17721/1812-5409.2026/1.3