Table 2. Effect of cold shock on pre- and post-copulatory traits.

Summary of results of a three-factor mixed model ANOVA considering selection regime (FSB and FCB) and period (recovery period 4, 12 and 30 hours after cold shock) as fixed factors crossed with block as random factor on the (A) mating success and (B) male fertility data. p-values in bold are statistically significant. Estimated denominator DF (Satterthwaite method) was very low. Hence F ratio and p values are unavailable for some of the effects.

Trait	Effect	SS	MS Num	DF Num	DF Den	F ratio	p
(A)	Selection (Sel)	0.051	0.051	1	4	17.154	0.014
Mating	Period (Per)	0.152	0.076	2	8	18.937	0.001
success	Block (Blk)	0.078	0.020	4	1.127	7.214	0.243
	Sel×Per	0.017	0.008	2	8	1.986	0.199
	Sel×Blk	0.012	0.003	4	8	0.696	0.616
	Per×Blk	0.032	0.004	8	8	0.937	0.535
	Sel× Per×Blk	0.034	0.004	8	.	.	.
(B)	Selection (Sel)	0.053	0.053	1	4	66.681	0.001
Male	Period (Per)	0.052	0.026	2	8	8.104	0.012
fertility	Block (Blk)	0.016	0.004	4	0.588	.	.
	Sel×Per	0.020	0.010	2	8	1.694	0.244
	Sel×Blk	0.003	0.001	4	8	0.136	0.965
	Per×Blk	0.026	0.003	8	8	0.551	0.792
	Sel×Per×Blk	0.047	0.006	8	.	.	.