Table 1. MANCOVA analyses for protein and carbohydrate intake by Bt-S and Bt-RU from the three choice experiments.

	Protein and carbohydrate intake
	Day 0–1			Days 0–2			Days 0-pupation
source	d.f. (Num, Den)	F-value	P-value	d.f. (Num, Den)	F-value	P-value	d.f. (Num, Den)	F-value	P-value
initial weight	2, 219	0.45	0.64	2, 218	10.90	<0.0001	2, 218	0.40	0.67
sex	2, 219	5.54	<0.01	2, 218	2.06	0.13	2, 218	5.84	<0.01
colony	2, 219	41.33	<0.0001	2, 218	26.82	<0.0001	2, 218	40.73	<0.0001
choice expt	4, 440	2.39	0.05	4, 438	5.93	<0.0001	4, 438	2.68	0.03
colony×choice expt	4, 436	0.67	0.62	4, 434	2.16	0.07	4, 434	2.05	0.09
colony×sex	2, 216	0.75	0.47	2, 218	5.93	<0.01	2, 218	4.88	<0.01
choice expt×sex	4, 430	1.70	0.15	4, 430	0.51	0.73	4, 430	0.69	0.60
colony×choice expt×sex	4, 426	1.43	0.22	4, 426	2.39	0.05	4, 426	2.36	0.05

Analyses were performed on each of the three cumulative intake points (days 0–1, 0–2, and 0-pupation). Non-significant interactions (p≥0.05) were removed sequentially.

colony = susceptible vs. resistant.