Reproductive performance.

2014-11-03T03:52:46Z (GMT) by Alison M. Roark Karen A. Bjorndal
<p>(A) Cumulative fecundity of insects in each of five treatment groups. The x-axis represents days of the reproductive lifespan. Each curve terminates at a point corresponding to the mean duration (± standard error) of reproductive activity and the mean fecundity (± standard error) for each group. Curves were constructed by scaling the reproductive lifespan of each insect to the mean reproductive lifespan for that group, determining the mean cumulative fecundity of all insects in that group on each day of the scaled reproductive lifespan, and fitting a smooth spline (<i>df</i> = 7) to the resulting means. U = unlimited access to food, L = limited access to food. Sample sizes: UUU <i>n</i> = 13, ULL <i>n</i> = 13, UUL <i>n</i> = 13, LLL <i>n</i> = 7, LUU <i>n</i> = 12. Different letters to the right of each point indicate significantly different means for fecundity (a, b, and c) and reproductive lifespan (w, x, y, and z) among treatment groups. (B) Metrics of egg production. Early egg output (white squares) was measured as the number of eggs oviposited during the first six days of the reproductive lifespan, and mean egg mass (black diamonds) was measured in mg (means ± standard errors). U = unlimited access to food, L = limited access to food. Sample sizes: UUU <i>n</i> = 13, ULL <i>n</i> = 13, UUL <i>n</i> = 13, LLL <i>n</i> = 7, LUU <i>n</i> = 12. Different letters indicate significantly different means for early egg output (a, b, and c) and mean egg mass (x, y, and z) among treatment groups.</p>