Fig. 4. Bar diagram illustrating differences in feeding behavior between Sphenodon punctatus (closed bar) and an agamid lizard (Plocederma stellio; open bar) feeding on the same prey (mealworm). Note how both the duration of a single transport cycle (TCD, transport cycle duration; F_1,28=25.29; P<0.01) and the transport stage duration (TSD; F_1,28=6.01; P=0.02) are significantly larger in S. punctatus. The duration of a single swallowing cycle (SCD) and the duration of the swallowing stage (SSD), by contrast, are not different between species (P>0.5).