Fig. 1. Typical shape of the resting larval body. (A) Silhouettes of lateral and dorsal views of a larva, traced from video images. The tail fin is shown in white. The concave-left bend in the tail of this individual can be seen from the dorsal view. (B) The midline measured from the dorsal view of the same individual. Trunk angle (
) is the angle between the trunk’s midline and the first anterior segment of the tail. Curvature for a tail segment (
) is equal to the angular flexion, 
, between the neighboring segments, divided by the length of the segment, s (Thomas and Finney, 1980).
