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Figure 7


Fig. 7. Evolutionary patterns of foraging locomotor biomechanics and gait in relation to foraging mode in lizards (Fig. 1). From the ancestral condition of sit-and-wait foraging (black branches) with running mechanics (RUN) and a trotting gait (G:TROT), lizards have evolved walking mechanics (WALK) in concert with wide foraging (white branches) several times. Wide foraging species exhibit one of 4 patterns of gait shift (G1, G2, G3, G4, from Fig. 6) involving different shifts in limb phase ({uparrow} or {downarrow} LP) and duty factor ({uparrow} or {downarrow} DF). Note that walking mechanics was lost (WALK crossed out) each time foraging mode underwent an evolutionary reversal to SW.