Table 2.

Results of the analyses describing the effects of host genotype, and density manipulation on the disease characteristics of infected animals

	Direct effect (F0)		Maternal effect (F1)
Infection rate	χ 2 1	Partial-η2	χ 2 1	Partial-η2
Pathogen clone (GP)	–	–	2.08	0.013
Host clone (GH)	–	–	7.25**	0.042
Density effect (E)	–	–	8.22**	0.048
GP x GH	–	–	0.40	0.002
GP x E	–	–	2.40	0.015
GH x E	–	–	0.27	0.002
GP x GH x E	–	–	0.31	0.002
Pathogen spore loads	F 1, 220	Partial-η2	F 1, 224	Partial-η2
Pathogen clone (GP)	42.28***	0.161	3.77#	0.017
Host clone (GH)	8.75**	0.038	4.89*	0.021
Density effect (E)	0.53	0.002	4.15*	0.018
GP x GH	0.05	<0.001	6.16*	0.027
GP x E	0.08	<0.001	0.01	<0.001
GH x E	23.41***	0.096	0.12	0.001
GP x GH x E	0.73	0.003	3.19#	0.014
Host body size	F 1, 241	Partial-η2	F 1, 229	Partial-η2
Pathogen clone (GP)	6.36*	0.026	7.52**	0.032
Host clone (GH)	45.45***	0.159	1.25	0.005
Density effect (E)	0.17	0.001	25.78***	0.101
GP x GH	0.11	<0.001	4.53*	0.019
GP x E	0.57	0.002	2.60	0.011
GH x E	103.02***	0.299	22.84***	0.091
GP x GH x E	0.76	0.003	0.60	0.003
Overall host fecundity	F 1, 241	Partial-η2	F 1, 230	Partial-η2
Pathogen clone (GP)	89.26***	0.270	14.84***	0.061
Host clone (GH)	200.18***	0.454	35.82***	0.135
Density effect (E)	2.47	0.010	17.00***	0.069
GP x GH	1.05	0.004	0.73	0.003
GP x E	6.18*	0.025	3.08	0.013
GH x E	0.13	0.001	0.34	0.001
GP x GH x E	1.41	0.006	2.02	0.009

Direct effect refers to the treatment where animals were raised directly in conditioned water, whereas the maternal effect refers to the offspring of these manipulated mothers. Traits measured include the proportion of animals infected overall, plus the pathogen spore loads, body size, and lifetime fecundity of animals that survived until the end of the experimental period. Presented are the appropriate test statistics (^# p < 0.1, *p < 0.05, **p < 0.01, ***P < 0.001), and relative effect sizes (partial-η²) that estimate the proportion of variability associated with a particular effect