Dynamics of a Predator-Prey System with a Mate-Finding Allee Effect

Abstract EN

We consider a ratio-dependent predator-prey system with a mate-finding Allee effect on prey.

The stability properties of the equilibria and a complete bifurcation analysis, including the existence of a saddle-node, a Hopf bifurcation, and, a Bogdanov-Takens bifurcations, have been proved theoretically and numerically.

The blow-up method has been applied to investigate the structure of a neighborhood of the origin.

Our mathematical results show the mate-finding Allee effect can reduce the complexity of system behaviors by making the complicated equilibrium less complicated, and it can be a destabilizing force as well, which makes the system has a high possibility of being threatened with extinction in ecology.