TABLE 4.
Component fitness assays in the absence of enemy challenge
| Aphid line | Symbiont infection status | No. of offspring by day 26 ± SE | Day of 50% survival (95% CI)a |
|---|---|---|---|
| CJ113 | Uninfected | 194 ± 15.5 | 23.2 (21.5–25.3) |
| 5AU-CJ113 | R. insecticola only | 187.8 ± 16.9 (P = 0.997) | 23.6 (21.3–25.1) (P = 0.200) |
| AS3-CJ113 | Protective H. defensa only | 61.1 ± 14.1 (P < 0.0001) | 15.1 (13.6–16.7) (P < 0.0001) |
| A2C-CJ113 | Nonprotective H. defensa only | 168.6 ± 8.7 (P = 0.540) | 21.8 (20.0–23.7) (P = 0.870) |
| AS3-5AU-CJ113 | Protective H. defensa + R. insecticola | 91.8 ± 11.5 (P < 0.0001) | 18.0 (16.2–20.1) (P = 0.030) |
| A2C-5AU-CJ113 | Nonprotective H. defensa + R. insecticola | 137.7 ± 13.6 (P = 0.021) | 22.2 (20.5–24.1) (P = 0.690) |
| PB17 (control) | Uninfected | 214.4 ± 28.1 | 23.6 (21.7–25.6) |
| 5AU-PB17 | R. insecticola only | 183.1 ± 17.6 (P = 0.596) | 21.6 (19.5–3.9) (P = 0.71) |
| AS3-PB17 | Protective H. defensa only | 100.0 ± 10.5 (P = 0.0001) | 18.8 (17.2–20.6) (P = 0.02) |
| A2C-PB17 | Nonprotective H. defensa only | 194.6 ± 16.0 (P = 0.892) | 22.3 (20.4–24.4) (P = 0.500) |
| AS3-5AU-PB17 | Protective H. defensa + R. insecticola | 163.6 ± 13.3 (P = 0.170) | 22.0 (20.3–23.9) (P = 0.867) |
| A2C-5AU-PB17 | Nonprotective H. defensa + R. insecticola | 160.4 ± 14.9 (P = 0.130) | 23.0 (21.4–24.8) (P = 0.482) |
| WI27 (control) | Uninfected | 109.0 ± 10.3 | 21.4 (19.5–23.7) |
| 5AU-WI27 | R. insecticola only | 175.6 ± 15.9 (P = 0.0001) | 24.9 (22.9–26.9) (P = 0.053) |
| AS3-WI27 | Protective H. defensa only | 53.3 ± 9.6 (P = 0.008) | 17.3 (16.2–18.5) (P = 0.002) |
| A2C-WI27 | Nonprotective H. defensa only | 112.4 ± 9.8 (P = 0.999) | 21.4 (19.5–23.4) (P = 0.894) |
| AS3-5AU-WI27 | Protective H. defensa + R. insecticola | 81.7 ± 14.1 (P = 0.368) | 18.6 (16.6–20.9) (P = 0.136) |
| A2C-5AU-WI27 | Nonprotective H. defensa + R. insecticola | 97.0 ± 11.2 (P = 0.930) | 19.7 (17.9–21.6) (P = 0.291) |
a
CI, confidence interval. Boldface indicates statistical significance.