Dynamics of a Leslie-Gower predator-prey system with cross-diffusion

Abstract

A Leslie–Gower predator–prey system with cross-diffusion subject to Neumann boundary conditions is considered. The global existence and boundedness of solutions are shown. Some sufficient conditions ensuring the existence of nonconstant solutions are obtained by means of the Leray–Schauder degree theory. The local and global stability of the positive constant steady-state solution are investigated via eigenvalue analysis and Lyapunov procedure. Based on center manifold reduction and normal form theory, Hopf bifurcation direction and the stability of bifurcating time-periodic solutions are investigated and a normal form of Bogdanov-Takens bifurcation is determined as well.

Keywords

• cross-diffusion
• predator–prey system
• global existence
• stability
• hopf bifurcation
• bogdanov–takens bifurcation