841646.fig.002a
(a)
841646.fig.002b
(b)
Figure 2: Catching prey. Up is forward. The turquoise area indicates the field of view. (a) If the prey is stepped or jumped on longitudinally, the organism gains one fitness point (the prey is caught and eaten). (b) If the prey is stepped or jumped on laterally, the organism loses one fitness points (the prey injures the organism and flees).