TABLE 1.
Effect of Rickettsia infection on fitness parameters of the host aphida
| Characteristic | OYdw (+Rickettsia) | OYamp (−Rickettsia) |
|---|---|---|
| No. of aphids measured | 17 | 20 |
| Body wt* (mg) at 12 days old | 3.78 ± 0.48 | 4.38 ± 0.40 |
| Total no. of offspring* | 113 ± 19.5 | 134 ± 12.3 |
| Age at first reproduction (days after birth) | 8.35 ± 0.49 | 8.41 ± 0.50 |
| Longevity (days) | 28 ± 4.0 | 28 ± 3.8 |
a
Means ± standard deviations are shown. Asterisks indicate the fitness parameters that exhibited statistically significant differences (Mann-Whitney U test, P < 0.001). The measurements were conducted 15 generations after the injection treatments.