The effects of the duration of the feeding period on the subsequent survival and timing of metamorphosis of fifth instar larval Manduca. Growth curves are for control (A) and for CAX (B) larvae that were starved for 2.5 d from the beginning of the last instar, given food for the indicated period, and then maintained with only a source of water. For the larvae that were fed on standard diet for only 6 or 12 h, they were subsequently given a sucrose-only diet to maintain their energetic needs. W, onset of wandering; crosses, time of death. Each point represents the mean weight, and the error bars represent SE. Numbers are the number of larvae in each group. Cross indicates death without beginning metamorphosis.