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Table 3 Karyotype and temperature effects on thermal preference.

From: Genetic constraints for thermal coadaptation in Drosophila subobscura

Source of variation

d.f.

Mean Square

F

P

Covariate (plate hour)

1

147.947

11.84

< 0.001

Karyotype (κ)

5

60.774

4.97

0.002

    O st / O 3 + 4 *

1

0.853

0.07

0.793

    O 3 + 4 * / O 3 + 4 *

2

42.884

3.51

0.043

    O st / O st ,  O st / O 3 + 4 * , O 3 + 4 * / O 3 + 4 *

2

106.330

8.70

0.001

additive effect

1

205.854

16.85

< 0.001

dominance effect

1

3.532

0.29

0.595

Cross ⊂ κ

30

12.220

0.98

0.502

Temperature (Ï„)

1

41.328

3.31

0.069

Sex (Ï‚)

1

91.221

7.30

0.007

κ × τ

5

19.791

1.58

0.162

κ × ς

5

10.805

0.86

0.505

τ × ς

1

4.948

0.40

0.529

κ × τ × ς

5

8.863

0.71

0.617

Error

691

12.498

  
  1. Flies raised from outbred crosses of Drosophila subobscura reared at 18°C and 22°C. Karyotypes being compared are Ost/Ost, O3+4/O3+4, O3+4+8/O3+4+8, Ost/O3+4, Ost/O3+4+8 and O3+4/O3+4+8. O 3 + 4 * stands for O3+4 + O3+4+8. (⊂ means "nested in".)