Table 3. Effect of female availability treatment and prior copulation success on the number of sperm in the guppy.

Source	df	Estimate	SS	F	P	Effect size
Sperm count
Treatment	1	0.019 (–0.099, 0.137)	0.0065	0.104	0.748	0.08 (–0.40, 0.55)
Copulation success	1	–0.140 (–0.274, –0.005)	0.2695	4.298	0.042	–0.50 (–0.98, –0.02)
Residuals	70		4.3894

Parameter estimates and effect sizes [59] are presented with 95% confidence intervals. Parameter estimates are relative to the high female availability (HFA) treatment level.