Table 2.

Regression analysis of the effects of latitude on population means for the traits, including confidence intervals for the proportion of variation explained by latitude. (Significant associations are italicized.)

species	trait	slope	R2	p-value	lower CI	upper CI
D. serrata	cold, femalesa	−0.586	0.306	0.017	0.168	0.412
	desiccation, femalesa	−0.016	0.004	0.798	0.000	0.082
	starvation, femalesa	0.234	0.053	0.372	0.000	0.258
	starvation, malesa	0.486	0.365	0.010	0.044	0.524
	development timeb	0.034	0.404	0.048	0.264	0.540
	wing size, malesa	0.133c	0.907	<0.001	0.865	0.931
	wing size, femalesa	0.117c	0.928	<0.001	0.887	0.941
	microsatellitesd	−10.130	0.209	−	0.036	0.222
D. birchii	cold, females 2002e	0.030	0.003	0.868	0.000	0.224
	cold, females 2004	0.032	0.002	0.924	0.000	0.009
	desiccation, females 2002f	0.334	0.478	0.018	0.266	0.611
	desiccation, females 2004	0.197	0.560	0.051	0.159	0.781
	starvation, femalese	2.854	0.461	0.022	0.310	0.557
	heat, femalese	0.082	0.086	0.380	0.000	0.309
	development time, femalese	1.560	0.250	0.117	0.087	0.415
	development time, malese	1.073	0.141	0.255	0.026	0.293
	wing size, femalese	−0.290	0.009	0.777	0.000	0.126
	microsatellitesg	1.857	0.078	—	0.028	0.144
D. bunnanda	cold, females	0.332	0.142	0.532	0.000	0.806
	cold, males	1.785	0.685	0.084	0.019	0.929
	desiccation, females	0.067	0.033	0.772	0.000	0.514
	desiccation, males	−0.170	0.380	0.268	0.003	0.846
	wing size, females	1.983	0.323	0.317	0.071	0.605
	wing size, males	1.571	0.206	0.443	0.065	0.606
	microsatellites	−0.797	0.061	—	0.023	0.166

^aData from Hallas et al. (2002).

^bData from Sgrò & Blows (2003).

^cLogarithmic relationship.

^dExcluding locus D34.

^eData from Griffiths et al. (2005).

^fData from Hoffmann et al. (2003).

^gData from Schiffer et al. (2007).