2.2. Predator consumption rates
Aphid consumption rates of
A. aphidimyza
and
C. car-
nea
were measured in 60
£
15 mm Petri dish arenas. The
bottom of the dish was lined with moist
W
lter paper and
contained a soybean lea
X
et 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 ran-
domly on a cafeteria tray and held in a walk-in growth
chamber at 24:16 °C on a 16:8 h L:D.