TABLE 3.

Thermal reaction norm parameters for male and female reproductive performance. Random slopes extracted from random slope models examining the change in each response variable between either 25°C and 27°C or between 27°C and 29°C temperatures. Table reports two model outputs: ‘High lines (Intercept)’ which tests whether the slope of high lines differs from a slope of zero and ‘Low lines’ which tests whether the slope of high and low lines differ. df indicates the degrees of freedom. t value is the t test values obtained in each analysis. Statistically significant contrasts are represented in bold and marginal significance is marked with *

Sex	Var. of interest	Reaction norm	Comparison	Estimate	SE	t value	p value
Male	Mating success	25°C −27°C	High lines (Intercept)	0.055	0.009	5.865	<0.001
			Low lines	0.003	0.013	0.236	0.815
		27°C −29°C	High lines (Intercept)	−0.872	0.048	−18.37	<0.001
			Low lines	−0.037	0.067	−0.557	0.581
	Fertility	25°C −27°C1	High lines (Intercept)	0.065	0.079	0.817	0.419
			Low lines	0.23	0.112	2.046	0.048
		27°C −29°C	High lines (Intercept)	−0.745	0.145	−5.145	<0.001
			Low lines	−1.707	0.205	−8.335	<0.001
	Productivity	25°C −27°C1	High lines (Intercept)	0.001	0.022	0.060	0.952
			Low lines	−0.015	0.031	−0.477	0.636
		27°C −29°C	High lines (Intercept)	−0.348	0.182	−1.913	0.063*
			Low lines	−1.39	0.258	−5.396	<0.001
Female	Productivity	25°C −27°C1	High lines (Intercept)	−0.145	0.073	−1.979	0.069*
			Low lines	0.075	0.100	0.747	0.468
		27°C −29°C	High lines (Intercept)	0.224	0.272	−0.821	0.426
			Low lines	−0.597	0.3730	−1.601	0.133