Research Article

Adaptive Evolution of Virulence-Related Traits in a Susceptible-Infected Model with Treatment

Figure 3

Critical function analysis (a)-(b), (a) , (b) ; black solid lines indicate the CSS, red solid line indicates convergence stable but not evolutionarily stable singular strategy (i.e., evolutionary branching point), and parameter values are , and .
891401.fig.003a
(a)
891401.fig.003b
(b)