Figure 1From: Stability and Hopf bifurcation of a producer-scrounger model with age-structure The case of \(\pmb{R_{0}>1}\) and \(\pmb{u_{0}>v_{0}}\) , where \(\pmb{b_{1}=1}\) , \(\pmb{a_{1}=1}\) , \(\pmb{b_{2}=0.8}\) , \(\pmb{a_{2}=2}\) , \(\pmb{m=3}\) , \(\pmb{d=1}\) , \(\pmb{\theta e^{-b_{3}\tau}=3}\) , \(\pmb{\tau =0.5}\) . Back to article page