Genetic constraints for thermal coadaptation in Drosophila subobscura

Table 1 Inbreeding and temperature effects on thermal preference.

Source of variation	d.f.	Mean Square	F	P
Covariate (plate hour)	1	25.502	2.07	0.151
Karyotype (κ)	2	231.515	18.29	< 0.001
Cross ⊂ κ	15	12.676	1.03	0.425
Inbreeding (ι)	1	30.514	2.47	0.116
Temperature (τ)	1	4.119	0.33	0.564
Sex (ς)	1	46.227	3.74	0.053
κ × ι	2	40.337	3.27	0.039
κ × τ	2	40.031	3.24	0.040
κ × ς	2	6.195	0.50	0.606
ι × τ	1	11.063	0.90	0.344
ι × ς	1	6.257	0.51	0.477
τ × ς	1	0.408	0.03	0.856
κ × ι × τ	2	17.477	1.42	0.243
κ × ι × ς	2	11.532	0.93	0.393
κ × τ × ς	2	7.600	0.62	0.541
ι × τ × ς	1	12.123	0.98	0.322
κ × ι × τ ×ς	2	4.245	0.34	0.709
Error	717	12.346

Flies raised from inbred (isogenic) and outbred crosses of Drosophila subobscura reared at 18°C and 22°C. Karyotypes being compared are O_st/O_st, O₃₊₄/O₃₊₄, and O₃₊₄₊₈/O₃₊₄₊₈. (⊂ means "nested in".)

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