Table 2:

Results of general linear mixed models testing predictors of F2 mass and length (n=125 males, n=126 females) and square-root transformed cortisol (n=97 males, n=99 females).

	Female F2s				Male F2s
	Mass
	t	df	p	Cohen’s F	t	df	p	Cohen’s F
Maternal grandfather treatment	0.83	18.84	0.42	0.08	0.82	14.26	0.43	0.08
Paternal grandfather treatment	1.88	16.36	0.08	0.05	−1.35	117.21	0.18	0.13
Standard length	24.29	117.41	<0.001	2.34	24.31	114.33	<0.001	2.33
Maternal * paternal GF treatment	−2.85	117.40	0.005	0.27	---	---	---	---
	Standard length
	t	df	p	Cohen’s F	t	df	p	Cohen’s F
Maternal grandfather treatment	1.22	5.58	0.27	0.12	0.94	117.10	0.35	0.09
Paternal grandfather treatment	−0.002	2.69	1	0	0.56	14.96	0.59	0.05
Tank density	−4.10	92.69	<0.001	0.41	−4.86	107.67	<0.001	0.47
Days since hatching	0.27	70.63	0.27	0.03	−1.33	59.33	0.19	0.13
	Acute cortisol
	t	df	p	Cohen’s F	t	df	p	Cohen’s F
Maternal grandfather treatment	−0.58	7.87	0.58	0.06	−0.04	10.62	0.97	0.004
Paternal grandfather treatment	−0.43	7.15	0.68	0.05	0.12	10.75	0.90	0.02
Standard length	−0.50	55.78	0.62	0.06	2.20	92.13	0.03	0.24