796783.fig.007
Figure 7: This figure illustrates that the smooth line indicates the stability and the dashed (-) line indicates the instability of the system (3) with respect to quality of additional food 𝛼 for 𝑁 0 = 2 . 5 , 𝑎 = 0 . 2 6 , 𝛼 1 = 1 , 𝛼 2 = 0 . 5 , 𝛾 1 = 0 . 2 , 𝛾 2 = 0 . 1 5 , 𝛽 = 0 . 4 , 𝛽 1 = 0 . 2 , 𝑑 1 = 0 . 2 1 5 , 𝑑 2 = 0 . 1 0 7 , 𝜔 = 0 . 5 , and 𝜉 = 1 .