Table 3.

Sequential model building approach comparing the effects of P and C intake on traits across the sexes in N. cinerea. The angle (θ) between the linear vectors (and 95% CI) is also provided to highlight differences in the directionality of any observed nutrient effects

	SSR	SSC	DF1	DF2	F	P	θ (95% CI)
3H2B versus Clutch size
Linear	353.57	328.55	2	461	17.55	0.0001A	40.30° (16.68°,63.85°)
Quadratic	305.50	304.18	2	457	0.99	0.37
Correlational	296.29	294.98	1	455	2.02	0.16
2MT versus Clutch size
Linear	351.55	326.66	2	461	17.56	0.0001B	38.13° (15.31°,61.29°)
Quadratic	303.78	302.32	2	457	1.10	0.33
Correlational	293.10	292.36	1	455	1.15	0.28
4E2M versus Clutch size
Linear	376.82	364.38	2	461	7.87	0.0004C	30.57° (5.47°,53.60°)
Quadratic	345.42	344.61	2	457	0.54	0.58
Correlational	333.69	333.42	1	455	0.37	0.54
3H2B versus Gestation time
Linear	369.10	340.92	2	461	19.05	0.0001D	30.36° (0.08°,57.37°)
Quadratic	325.51	321.19	2	457	3.07	0.047E
Correlational	321.18	320.16	1	455	1.45	0.23
2MT versus Gestation time
Linear	367.55	339.03	2	461	19.39	0.0001F	28.65° (0.15°,54.67°)
Quadratic	323.65	319.33	2	457	3.09	0.046G
Correlational	319.23	317.54	1	455	2.42	0.12
4E2M versus Gestation time
Linear	392.15	376.76	2	461	9.41	0.0001H	23.49° (0.00°,49.30°)
Quadratic	364.52	361.37	2	457	1.99	0.14
Correlational	361.27	358.60	1	455	3.39	0.07

Univariate tests: ^AP: F _1,461 = 15.66, P = 0.0001, C: F _1,461 = 4.56, P = 0.033; ^BP: F _1,461 = 14.33, P = 0.0002; C: F _1,461 = 5.51, P = 0.019; ^CP: F _1,461 = 6.49, P = 0.011; C: F _1,461 = 2.42, P = 0.12; ^DP: F _1,461 = 8.79, P = 0.0032; C: F _1,461 = 12.11, P = 0.0006; ^EP: F _1,457 = 0.16, P = 0.69; C: F _1,457 = 5.75, P = 0.017; ^FP: F _1,461 = 7.80, P = 0.005; C: F _1,461 = 13.63, P = 0.0002; ^GP: F _1,457 = 0.38, P = 0.54; C: F _1,457 = 5.46, P = 0.020; ^HP: F _1,461 = 2.66, P = 0.10; C: F _1,461 = 8.10, P = 0.0046.