Figure 3From: Global Hopf bifurcation for three-species ratio-dependent predator-prey system with two delays The trajectories of system ( 5.1 ) with \(\pmb{\tau _{1}=0}\) , \(\pmb{\tau_{2}=31.14 > \tau_{2_{10}}=31.1328}\) . A Hopf bifurcation occurs from the positive equilibrium \(E^{*}\). The initial value is \((4,3.2,1)\).Back to article page