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Table 2 Results of the analyses describing the effects of host genotype, and density manipulation on the disease characteristics of infected animals

From: The trans-generational impact of population density signals on host-parasite interactions

  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
  1. 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