Table 3.

Summary of genome-wide significant QTL identified for sex ratio and brood size in Nasonia vitripennis. CIs are confidence intervals.

			Variance explained (%)		Background
Trait	Chr*	Location† (95% CI)	Phenotypic	Genetic		QTL effect‡ (95% CI)	Normalized QTL effect§	μ¶	a**	d††
Sex ratio	2	17.0 (5.0–37.0)	0.16	1.56	High	0.0251 (0.0249 to 0.0253)	+14.9%	0.168	0.016	−0.008
					Low	0.0083 (0.0078 to 0.0089)	+5.5%	0.136
Brood size	1	35.4 (0.0–50.0)	0.13	0.76	High	−2.27 (−3.64 to −0.90)	−8.0%	25.92	−1.588	−0.798
					Low	−2.39 (−3.74 to −1.02)	−8.2%	29.09

QTL, quantitative trait locus.

^*Chromosome.

^†Location in centiMorgans.

^‡Estimated effect size of the QTL, calculated as the difference in sex ratio (or brood size) between sibships inheriting the high vs. the low allele from the recombinant F2 male.

^§Change relative to the mean in the high and low genetic backgrounds.

^¶Estimated genotypic mean in the high and low backgrounds.

^**Estimated additive effect of the QTL in the sibships. Positive values indicate that the H allele (from the high sex ratio line) confers greater sex ratio/brood size.

^††Estimated dominance effect of the QTL in the sibships.