Table 4. Linear model results for isofemale number of offspring eclosed against mtDNA species type. Results for OreR and Aut nuclear types are shown. The model coefficients (β ± SE) are compared against the respective values for D. melanogaster mtDNAs (intercept= 60.16 for OreR nuclear type; intercept= 58.81 for Aut nuclear type). In the OreR nuclear background, isofemales with D. simulans mtDNAs produced significantly fewer offspring than isofemales with D. melanogaster mtDNAs. In the Aut nuclear background, isofemales with D. simulans mtDNAs produced significantly more offspring than isofemales with D. melanogaster mtDNAs (see Figure 3). In both nuclear backgrounds, there was a significant effect of mtDNA species type (D. simulans vs. D. melanogaster) on isofemale offspring numbers. Degrees-of-freedom, R2, F-statistics and P-values are shown. Bold denotes significance at α=0.05.
| T-test (Individual haplotypes against model) | ANOVA (Haplotype effect) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nuclear type | Term against model | β (± SE) | T | Nuclear type | Model term | d.f. | Sum-of-squares | R2 | F | P |
| OreR | D. simulans mtDNA | −23.44 (3.42) | −6.85 | OreR | mtDNA species | 1 | 37644 | 0.145 | 46.98 | 4.43e-11 |
| Residual | 285 | 228350 | ||||||||
| Aut | D. simulans mtDNA | 12.68 (2.78) | 4.56 | Aut | mtDNA species | 1 | 10998 | 0.067 | 20.78 | 7.63e-6 |