Table 2 Results of the general linear models testing the effects of the different Wolbachia strain loads and composition (independent variables) on the integrated index of reproductive success, and on the male, female, and overall offspring number (dependent variables). Correlations with the overall offspring numbers were used to distinguish between the potential male killing and feminization mechanisms and hence were conducted only when there was an indication of reproductive manipulation. We obtained the strain composition by assigning a ‘high’ or ‘low’ load relative to the median load of each strain (a nominal variable). NA = not applicable.
Independent variables | Reproduction success | Number of male offspring per female | Number of female offspring per female | Overall offspring number per female |
|---|---|---|---|---|
Wolbachia wSc1 load × Maternal age | F3,158 = 0.502 p = 0.48 | F3,62 = 2.492 p = 0.12 | F3,62 = 3.271 p = 0.075 | NA |
Wolbachia wSc1 load | F1,160 = 0.097 p = 0.755 | F1,64 = 0.89 p = 0.349 | F1,64 = 1.961 p = 0.166 | NA |
Wolbachia wSc2 load × Maternal age | F3,158 = 2.285 p = 0.133 | F3,62 = 0.861 p = 0.357 | F3,62 = 0.102 p = 0.751 | NA |
Wolbachia wSc2 load | F1,160 = 0.201 p = 0.654 | F1,64 = 6.508 p = 0.013 | F1,64 = 0.0 p = 0.984 | F1,64 = 3.998 p = 0.05 |
Strain composition × Maternal age | F9,152 = 0.843 p = 0.5 | F7,58 = 1.080 p = 0.365 | F7,58 = 0.740 p = 0.533 | NA |
Strain composition | F4,157 = 2.449 p = 0.048 | F3,62 = 0.879 p = 0.457 | F3,62 = 0.359 p = 0.783 | NA |
