set at 0.005 to account for the number of comparisons tested (ten). Data were analyzed using

SPSS for Windows (Release 11.0.0), and S-Plus (Version 7.0) was used for graphing smoothing

functions and Kaplan-Meier curves.

 Results

 The diets I imposed yielded different mass-specific intake trajectories for insects in each

treatment group (Fig. 5-2). Total dry mass of food consumed during each life-history stage

except the first instar differed significantly among treatment groups (Table 5-1). In the second

instar, food-restricted insects consumed more total food than insects feeding ad libitum despite

being significantly smaller (Fig. 5-3 and Table 5-2) and receiving proportionally less food on a

daily basis. This discrepancy is explained by the significantly longer instar duration in

food-restricted groups relative to groups feeding ad libitum (Figs. 5-3 and 5-4a). The pattern of

cumulative intake changed after the second instar and was dependent on diet history. Although

cumulative intake prior to the adult molt differed among treatment groups (F4,65 = 28.872, p <

0.0001), the total amount of food consumed between hatching and first oviposition did not differ

among treatment groups (F4,53 = 1.321, p = 0.274), hinting at a potential intake threshold for

induction of reproductive activity (Juliano et al. 2004).

 Size and age at each life-history transition differed significantly among treatment groups

(Fig. 5-3 and Table 5-2). Insects did not differ in body mass among treatment groups at hatching

(F4,65 = 1.00, p = 0.414). At the end of instars 1-4, body mass was greater and molting occurred

at younger ages in initially ad libitum insects (groups AL, AL-R at 5th, and AL-R at Ov) than in

initially food-restricted insects (groups R and R-AL at 5th). From the fifth instar until first

oviposition, all treatment groups except AL and AL-R at Ov differed significantly in body mass

and age at the end of each stage (Table 5-2). At death, body mass of AL-R at Ov insects was not

significantly different from body mass of AL and R-AL at 5th insects, but all other pairwise