Table 2.
Effects of artificial symbiont infection on the cumulative number of offspring produced by groups of aphids over the first 12 days of adult life, measured on either Lathyrus or Vicia. Terms were added in the order shown in the table, and the change in degrees of freedom and the deviance explained (the raw figure and as a percentage of the total deviance) are given along with the F-statistic and its associated probability (in bold when <0.05).
| factor(s) | d.f. | deviance | % deviation | F | p |
|---|---|---|---|---|---|
| Lathyrus | |||||
| no. of adults | 1 | 70.9 | 7.3 | 7.71 | 0.007 |
| block | 4 | 56.2 | 5.8 | 1.53 | 0.207 |
| recipient clone | 2 | 92.1 | 9.5 | 5.01 | 0.010 |
| infection status | 1 | 57.0 | 5.9 | 6.20 | 0.016 |
| donor strain | 3 | 101.6 | 10.5 | 3.69 | 0.017 |
| recipient × infection | 2 | 14.5 | 1.5 | 0.79 | 0.459 |
| recipient × donor | 5 | 11.2 | 1.2 | 0.24 | 0.941 |
| remaining deviance | 57 | 593.6 | |||
| Vicia | |||||
| no. of adults | 1 | 4879.2 | 22.79 | 35.79 | <0.001 |
| block | 2 | 13.6 | 6.21 | 4.88 | 0.011 |
| recipient clone | 1 | 2380.3 | 27.73 | 43.55 | <0.001 |
| infection status | 1 | 39.0 | 2.34 | 3.67 | 0.061 |
| donor strain | 3 | 90.3 | 4.23 | 2.21 | 0.097 |
| recipient × infection | 1 | 6.6 | 0.03 | 0.05 | 0.830 |
| recipient × donor | 3 | 229.9 | 2.71 | 1.42 | 0.247 |
| remaining deviance | 76 | 905.7 | |||