Fig. 1. (a) Basins of attraction of the two stable steady states, (V,R)1 = (0,0) and (V,R)3 = (1,1), for D'0 = 40, β' = 0.9 and γ' = 0.15. The dotted line marks the transition between the two basins in the absence of spatial dynamics (i.e., D0 = 0), and the dashed line separates the two attraction domains when D0≠0 (D0 = 40); (b) temporal dynamics of V (solid line) and R (dotted line) with D0 = 0 and initial conditions V = 0.035, R = 0.3. The other parameters are the same as in (a); (c) same as (b), but with R = 0.25; (d) same as (c) but with D0 = 40.