Fig. 6. Lactate concentrations at rest, immediately after exercise and 60 min after exercise in (A) white levator and (B) dark levator muscles. Note that resting lactate values and those immediately after exercise are not significantly different among the size classes. At 60 min, lactate begins to decrease in both tissues from small and medium crabs, while it remains elevated in large dark and white levator muscles. An asterisk indicates that lactate concentrations for that animal size class were significantly different (P<0.05) from the other two size classes (see text for details).