Modelling the influence of prey switching and optimal foraging on the control of banana weevil Cosmopolites Sordidus(Germar)

Document Type : Review articles

Authors

1 Department of Mathematics, Mbarara University of Science and Technology, P.O.Box 1410, Mbarara, Uganda.

2 Bioversity International-Uganda, P.O.Box 24384, Naguru, Kampala, Uganda.

Abstract

A mathematical model for the control of the banana weevil  Cosmopolites Sordidus  (Germar) by predatory ant species  is formulated and analyzed. The model incorporates predator switching to a non-dynamic alternative food source, optimal foraging theory and self regulation in both the banana weevil and predatory-ant species! Using Lyapunov's first method, the local stability of the equilibria is established. Furthermore, conditions for the existence of the interior equilibrium are derived and its global stability  established by the Bendixson--Dulac criterion with   periodic orbits  ruled out by  the Poincare--Bendixson theorem. It is determined that intrinsic growth rates and carrying capacities rather than handling time and nutritional value have significant impact on the banana weevils-- predatory ant interaction. Numerical simulations   confirm the theoretical results.

Keywords

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Volume 13, Issue 1
March 2022
Pages 937-954
  • Receive Date: 31 March 2020
  • Accept Date: 08 September 2021