Extended Data Fig. 7: Regional stability of the simulation model showing the frequency of resistant aphid clones (black line) and the proportion parasitism (red line) calculated from all 40 simulated fields.
From: Self-perpetuating ecological–evolutionary dynamics in an agricultural host–parasite system
To illustrate regional dynamics of the simulation model (Fig. 3), we removed the log-normal variation in aphid survival within fields and iterated the model for 4000 days. On days 667 and 2667, a perturbation was applied in which the proportion of the resistant clone was sharply increased. This caused parasitism to decrease, and with decreased parasitism selection favoured the non-resistant clone. After roughly 1000 days the proportion of resistant clones and proportion parasitism returned to their regional equilibrium values.
