Dynamics of a predator-prey system with inducible defense and disease in the prey

Establishing and researching a population dynamical model based on the differen-tial equation is of great significance. In this paper, a predator-prey system with inducible defense and disease in the prey is built from biological evolution and Eco-epidemiology. The effect of disease on population stability in the predator- prey system with inducible defense is studied. Firstly, we verify the positivity and uniform boundedness of the solutions of the system. Then the existence and stability of the equilibria are studied. There are no more than nine equilibrium points in the system. We use a sophisticated parameter transformation to study the properties of the coexistence equilibrium points of the system. A sufficient condition is established for the existence of Hopf bifurcation. Numerical simulations are performed to make analytical studies more complete.(c) 2022 Elsevier Ltd. All rights reserved.