comparisons of size were significantly different. Age at death differed significantly among all

groups except R and R-AL at 5th

 Relative body mass also differed among treatment groups at the adult molt as determined

by allometric analysis (Table 5-3). Least squares regression of body mass (y) and length (x) for

AL insects at the end of each instar yielded the equation ln(y) = 2.7112*ln(x) 12.018 (F1,76 =

14077.66, p < 0.0001, R2 = 0.995). This equation was used to calculate predicted body masses at

actual body lengths for each insect at the adult molt (Table 5-3). The ratio of actual to predicted

body mass was lower for insects feeding at a restricted rate during the final two instars (groups R

and AL-R at 5th), indicating that insects in these groups had proportionally lower body masses for

a given body length than insects in the other three groups.

 The duration of each life-history stage differed among treatment groups (Fig. 5-4a).

Food-restricted insects generally progressed more slowly through each stage than insects feeding

ad libitum. Previous diet history affected the duration of the fifth and sixth instars and the

pre-oviposition adult stage for insects in groups AL-R at 5th and R-AL at 5th, as individuals in

these groups progressed through these stages more rapidly than continuously food-restricted

individuals (group R) but more slowly than continuously ad libitum individuals (group AL).

Insects experiencing food restriction during adulthood prior to first oviposition laid their first

eggs later in the adult stage than insects feeding ad libitum during this time. However, duration

of adulthood after first oviposition was significantly shorter for insects that were food-restricted

than for insects that were feeding ad libitum during this time, regardless of when the food

restriction was imposed.

 Food-restricted insects also grew more slowly than insects feeding ad libitum (Fig. 5-4b),

although diet history affected the magnitude of this difference. After a switch from restricted to