The grey shaded region represents the region of stability for the equilibrium of the generalized Lotka-Volterra model (3).

The stability criterion (10) is plotted in terms of the log sensitivities of the attack rate f(h, p) to the prey (fh) and predator (fp) densities. The yellow line within the stability region separates the regions of negative real eigenvalues of the Jacobian matrix and complex eigenvalues with negative real parts. For this plot, the prey’s growth rate is assumed to be r = 2 per unit time and γ = 1 per unit time.