Table 1.
Summary of fitness traits for Mbita and Ifakara strains, and filial generations of hybridization between the two strains (100 Ifakara females, 100 Ifakara males, 100 Mbita females, and 100 Mbita males).
| Trait | Replicate | Mbita | Ifakara | F1 | F5 | F10 | F15 | F20 |
| Wing length (mm) | 1 | 2.92 (0.02) | 2.96 (0.02) | 3.10 (0.02) | 3.09 (0.03) | 3.11(0.02) | 3.14(0.03) | 3.03(0.16) |
| 2 | 2.87 (0.03) | 2.89 (0.03) | 3.17 (0.03) | 3.34 (0.03) | 2.98(0.02) | 3.07(0.03) | 2.95(0.02) | |
| Fecundity* | 1 | 47.17(2.66) | 58.25(2.29) | 63.37(2.28) | 64.58(2.18) | 70.26(2.05) | 65.08(2.02) | 68.90 (1.83) |
| 2 | 35.96(2.56) | 49.28(2.67) | 62.60(2.95) | 65.42(2.32) | 76.97(2.80) | 63.60(2.23) | 61.44(2.38) | |
| Blood-meal size (μl) | 1 | 3.15(0.14) | 2.54(0.08) | 3.96(0.26) | 2.78(0.15) | 2.53(0.23) | 3.10(0.15) | 3.13(0.16) |
| 2 | 2.93 (0.18) | 2.61 (0.11) | 4.51 (0.21) | 4.02 (0.16) | 2.97 (0.20) | 3.19 (0.17) | 3.21 (0.13) | |
| Larval survivorship (%) | 1 | 91.78 | 94.44 | 98.00 | 95.22 | 97.00 | 95.78 | 95.88 |
| 2 | 96.44 | 92.54 | 98.34 | 93.34 | 96.66 | 93.44 | 95.78 | |
| Mean adult longevity (days) | 1 | 22.31 | 14.52 | 20.03 | 29.00 | 31.81 | 20.71 | 16.95 |
| 2 | 19.61 | 15.66 | 19.97 | 21.66 | 33.72 | 16.38 | 18.64 |
Note: The values in parenthesis are standard errors. * Fecundity is the number of eggs laid plus the number of eggs retained.