Maternal effects mediated by egg quality in the Yellow-legged Gull Larus michahellis in relation to laying order and embryo sex

Table 3 Correlation matrix between egg components

Among-clutches correlations
	Vitamin A	Vitamin E	Testosterone	Estradiol	Corticosterone
Lutein	0.56*	0.13	-0.21	0.01	-0.05
Total carotenoids	0.63*	-0.01	0.01	-0.09	-0.01
Vitamin A		0.42*	0.10	-0.28	0.27
Vitamin E			-0.06	0.29	0.14
Testosterone				0.07	-0.02
Estradiol					0.32
Within-clutch correlations
	Vitamin A	Vitamin E	Testosterone	Estradiol	Corticosterone
Lutein	0.40*	0.61*	-0.07	0.02	0.12
Total carotenoids	0.40*	0.71*	0.01	-0.01	0.16
Vitamin A		0.58*	-0.04	0.06	0.14
Vitamin E			-0.01	0.12	0.30
Testosterone				0.08	0.23
Estradiol					-0.04

Correlation coefficients were derived from multiple response mixed models while accounting for laying order, embryo sex and their interaction (see Methods and Results). Significance of correlation coefficients is calculated based on a conservative sample size of 30 (equal to the number of clutches included in the comparisons). Asterisks denote correlations with P < 0.05, while values in italics indicate correlation coefficients that significantly differed (P < 0.05) at the among- and within-clutch levels.

ISSN: 1742-9994