Intra-Specific Density Dependent Effect of a Host-Parasitoid Interaction Model

In this paper, the effect of intra-specific competition of host in a host-parasitoid model is investigated qualitatively by computer simulation. Many forms of complex dynamic are observed, including quasi-periodic, Hopf bifurcation reversal, and attractors crises. Furthermore, we obtain that the density-dependent effect may be a stabilizing factor. When hosts intra-specific competition stronger, the parameter region for persistent and stable interaction increases.