Figure 8.
Relationship between pre- and post-foraging lifespan components predicted via the general linear model. (a) irs knockdown (hIRS) influences the relationship between the pre- and post-foraging components of lifespan in the high strain by reducing foraging lifespan more than the injected control (hGFP) group for each day that foraging onset was delayed (glmm: 0.39 ± 0.11 s.e., χ2 = 14,31, p = 0.0008, n = 444). (b) The interaction between age of first foraging and treatment was not significant in the low strain (glmm: 0.08 ± 0.101 s.e., χ2 = 1.12, p = 0.573, n = 447). Fitted lines are ± 95% confidence intervals.