Hopf bifurcation in a diffusive Lotka-Volterra type system with nonlocal delay effect

摘要

The dynamics of a diffusive Lotka Volterra type model for two species with nonlocal delay effect and Dirichlet boundary conditions is investigated in this paper. The existence and multiplicity of spatially non homogeneous steady-state solutions are obtained by means of Lyapunov Schmidt reduction. The stability of spatially nonhomogeneous steady-state solutions and the existence of Hopf bifurcation with the changes of the time delay are obtained by analyzing the distribution of eigenvalues of the infinitesimal generator associated with the linearized system. By the normal form theory and the center manifold reduction, the stability and bifurcation direction of Hopf bifurcating periodic orbits are derived. Finally, our theoretical results are illustrated by a model with homogeneous kernels and one-dimensional spatial domain. (C) 2015 Elsevier Inc. All rights reserved.