Predation Rate
Aphid consumption by lady beetles was significantly impacted by the
interaction of warming treatment and time of day (day vs. night; df = 3,
Chisq = 209.76, p < 0.0001; Figure 3). Lady beetles in
day-warming treatments consumed the most aphids during the day
(06:00-18:00; all p’s < 0.01), and night-warming treatments
consumed the most aphids during the night (18:00-06:00; all p’s
< 0.01). When the data were combined to represent total aphids
eaten throughout a 24-hour period, there was a significant effect of
warming treatment on consumption (df = 3, Chisq = 402.76, p <
0.0001). All warming treatments increased lady beetle consumption
relative to the ambient treatment (all p’s < 0.01).