SSD on the x-axis versus mean number of peaks (N_peak) on the y-axis. A symbol is shown for each snapshot of the simulation with t_sim >  220 Myr. Symbol size differentiates between the models (see legend in each panel). Left panel: the tidal interaction models TI-fid, TI-far, TI-retro show higher N_peak values compared with the isolated galaxy (gray points, shown in all panels for reference). Center panel: the ram pressure models RP-weak, RP-fid, RP-strong are shown. Right panel: Models where tidal interactions are combined with ram pressure are shown (TI-fid+RP-fid and TI-fid+RP-weak).