AL
a, w
R-AL at 5th
T ----db, x
0 20 40 60 80 100 120
Reproductive Lifespan (days)
Figure 5-7. Cumulative fecundity of insects in each of five treatment groups. The x-axis
represents days of the reproductive lifespan, with day 0 representing the first day of
oviposition. Each curve terminates at a point corresponding to the mean duration (
standard error) of reproductive activity (x) and the mean fecundity ( standard error)
for each group (y). Curves were constructed by scaling the reproductive lifespan of
each insect to the mean reproductive lifespan for that group, averaging the cumulative
fecundity of all insects in that group on each day of the reproductive lifespan, and
fitting a smooth spline (df= 7) to the resulting averages. Abbreviations: AL = ad
libitum, R = restricted. See Figure 5-1 for a description of diet treatments. Sample
sizes are the same as in Figure 5-2 for adults. Different letters to the right of each
endpoint indicate significantly different means for fecundity (a, b, and c) and
reproductive lifespan (w, x, y, and z) among treatment groups. See text for data
analysis.