Table 3. Sperm viability of uninfected honey bee males and males infected with Nosema apis.
| Source | Type III Sum of Squares | df | Mean Square | F | Sig |
|---|---|---|---|---|---|
| Corrected Model | 3829.692a | 3 | 1276.564 | 5.664 | 0.001 |
| Intercept | 51845.693 | 1 | 51845.693 | 230.047 | >0.001 |
| Treatment | 793.490 | 1 | 793.490 | 3.521 | 0.063 |
| Age | 2119.431 | 1 | 2119.431 | 9.404 | 0.003 |
| Treatment * Age | 1427.795 | 1 | 1427.795 | 6.335 | 0.013 |
| Error | 23663.822 | 105 | 173.227 | ||
| Total | 588393.693 | 109 | |||
| Corrected Total | 27493.514 | 108 |
Results from an analysis of covariance examining the effects of an infection with the microsporidian parasite Nosema apis on the sperm viability of male honey bees at different ages. Dependent variable: % live sperm per ejaculate counted. In a first analysis we used treatment as fixed factor, colony as random factor and age as a covariate. As colony was non significant (F = 2.290, df = 1, P = 0.381) we removed it for the final analysis.A. R Squared = .139 (Adjusted R Squared = .115).