Table 3. Results for all laboratory experiments on the effects of elevated temperature, drought, and their interaction, on parasitoid life-history parameters and aphid population response to parasitism using GLMMs, GLMs, and two-way ANOVAs.
Variable | Temperature | Drought | Temperature × Drought | |||
Z | P | Z | P | Z | P | |
Parasitism | 3.22 | <0.001 | 3.64 | <0.001 | 1.134 | 0.26 |
Aphid population growth | −4.87 | <0.001 | −5.92 | <0.001 | 11.29 | <0.001 |
fitted using OLR* | −0.04 | 0.362 | −0.02 | 0.562 | 0.131 | 0.017 |
No. of offspring | 0.079 | 0.937 | 4.12 | <0.001 | −1.55 | 0.12 |
Emergence success | 2.28 | 0.022 | −1.33 | 0.18 | −3.26 | 0.001 |
t | P | t | P | t | P | |
Longevity | −3.60 | 0.002 | −3.25 | 0.004 | 2.20 | 0.043 |
Significant P-values are given in bold. *Using observation-level vector (OLV) as random effect to account for overdispersion.