Effects of predation on CR and AR pea aphid fitness in different host plant contrasts within a simple (experiment I) and a more complex agricultural mosaic (experiment II).

Fitness values represent the average number of offspring/female at the end of the experiment. The fitness loss was calculated by using the formula: 1- Fd = 1-(P*100/C) where Fd is the % fitness difference between predator (P) treatment and control (C). Data from experiment I were analyzed with Mann-Whitney test, data from experiment II were analyzed with paired t test.