Global stability and Neimark-Sacker bifurcation of a host-parasitoid model

ABSTRACT

We investigate qualitative behaviour of a density-dependent discrete-time host-parasitoid model. Particularly, we study boundedness of solutions, existence and uniqueness of positive steady-state, local and global asymptotic stability of the unique positive equilibrium point and rate of convergence of modified host-parasitoid model. Moreover, it is also proved that the system undergoes Neimark-Sacker bifurcation with the help of bifurcation theory. Finally, numerical simulations are provided to illustrate theoretical results. These results of numerical simulations demonstrate chaotic long-term behaviour over a broad range of parameters. The computation of the maximum Lyapunov exponents confirm the presence of chaotic behaviour in the model.

KEYWORDS:

• Host-parasitoid model
• steady states
• boundedness
• local and global stability
• Neimark-Sacker bifurcation

Disclosure statement

No potential conflict of interest was reported by the author.