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Table 3 Factors influencing gyrodactylid population growth

From: Population regulation in Gyrodactylus salaris – Atlantic salmon (Salmo salar L.) interactions: testing the paradigm

Effect Df Sum of squares Mean Square F statistic P % variance accounted for
Age of infection 1 1.5875 1.5875 2571 2 × 10-16 22.8
Stock/replicate 17 3.555 0.20915 339 2 × 10-16 51.1
Initial inoculum 1 0.0251 0.0251 41 2 × 10-10 0.4
First order interactions
Age of infection: stock 17 0.4306 0.02533 41 2 × 10-16 6
Age of infection: initial inoculum 1 0.0072 0.0072 11.7 0.00064 0.1
Stock: initial inoculum 14 0.0331 0.00236 3.8 1.8 × 10-6 0.05
Second order interactions
Age of infection: stock: initial inoculum 14 0.0254 0.00181 2.9 0.00018 0.3
Residual (Unaccounted) variance 2095 1.2934 0.00062    18.6
Total   6.9578     100
  1. Significant factors in ANCOVA model of gyrodactylid population growth rate ~ age of infection * stock * initial parasite inoculum