2.2. Predator consumption rates
Aphid consumption rates of A. aphidimyza and C. carnea were measured in 60*15 mm Petridish arenas.
The bottom of the dish was lined with moist filter paper and contained a soybean leaflet infested with 30 second instar or adult A. glycines.
One second instar A. aphidimyza or second instar C. carnea was added to each arena and
allowed to forage for 24 h, after which the predator was removed and the number of remaining aphids recorded.
Five replications of each treatment were arranged randomly on a cafeteria tray and held in a walk-in growth chamber at 24:16 °C on a 16:8 h L:D.