Table 3.

Analysis of the blood biochemical correlates (haematocrit, lactate level and glycaemia) of sensitivity to hypoxia (R and S individuals) at two oxygen concentration levels (100% and 11%) by linear modelling. (Results shown concern reduced models issued from backward elimination. For each blood biochemical parameter and covariate, the following elements are given: its effect coefficient α together with its s.e. (α) in the reduced model; the associated F statistic with its degrees of freedom (at numerator and denominator as indices) and the resulting p-value for the type II test from the complete model. Terms excluding O₂ test effects on the constitutive levels of the blood biochemical parameters under normoxia, while terms involving O₂ test effects on the response of blood biochemical parameters to hypoxia. α₀, intercept; S, sensitivity group (factor: sensitive/resistant); T, larval rearing temperature (continuous); L, juvenile dietary lipid content (continuous); O₂, water concentration level (factor: 100%/11%); n.a., not applicable.)

parameter	covariate	α	s.e. (α)	F	p-value
haematocrit
under normoxia	α0	2.159	0.036	n.a.	n.a.
response to hypoxia	O2	0.181	0.049	F1,52 = 12.110	0.001
lactates
under normoxia	α0	−1.360	0.169	n.a.	n.a.
	S	0.353	0.200	F1,63 = 10.826	0.002
	T	−0.070	0.041	F1,63 = 0.019	0.892
	L	0.0001	0.022	F1,63 = 0.322	0.572
	S × L	−0.051	0.025	F1,63 = 4.017	0.050
	T × L	0.016	0.006	F1,63 = 6.054	0.017
response to hypoxia	O2	1.453	0.162	F1,63 = 217.026	<0.001
	O2 × S	0.510	0.228	F1,63 = 4.614	0.036
glycaemia
under normoxia	α0	−2.592	0.174	n.a.	n.a.
	S	0.033	0.169	F1,62 = 6.157	0.016
	T	−0.024	0.052	F1,62 = 0.550	0.461
	L	0.034	0.018	F1,62 = 26.780	<0.001
	T × L	0.018	0.007	F1,62 = 7.304	0.009
response to hypoxia	O2	1.408	0.206	F1,62 = 120.686	<0.001
	O2 × S	0.533	0.235	F1,62 = 4.732	0.033
	O2 × T	−0.163	0.059	F1,62 = 6.965	0.011