Table 1.
ANCOVA results for temporal changes in the frequencies of several X chromosome arrangement combinations and autosomal inversions across the seven collecting sites in this study. r2 is an estimate of the proportion of the total variance explained by the model used.
| X chromosome combination 1S | |||||
| Source | df | Type III SS | F Value | Pr > F | r2 |
| Model | 13 | 1.151 | 50.31 | < 0.0001 | 0.942 |
| Year | 1 | 0.014 | 5.97 | 0.019 | |
| Site | 6 | 0.207 | 14.93 | < 0.0001 | |
| Year*Site | 6 | 0.199 | 14.35 | < 0.0001 | |
| X chromosome combination S1 | |||||
| Source | df | Type III SS | F Value | Pr > F | r2 |
| Model | 13 | 2.589 | 50.94 | < 0.0001 | 0.943 |
| Year | 1 | 0.000 | 0.02 | 0.894 | |
| Site | 6 | 0.206 | 8.79 | < 0.0001 | |
| Year*Site | 6 | 0.197 | 8.39 | < 0.0001 | |
| Gene arrangement 2L-1 | |||||
| Source | df | Type III SS | F Value | Pr > F | r2 |
| Model | 13 | 1.317 | 20.55 | < 0.0001 | 0.870 |
| Year | 1 | 0.038 | 7.66 | 0.0085 | |
| Site | 6 | 0.215 | 7.25 | < 0.0001 | |
| Year*Site | 6 | 0.216 | 7.29 | < 0.0001 | |
| Gene arrangement 3R-1 | |||||
| Source | df | Type III SS | F Value | Pr > F | r2 |
| Model | 13 | 2.054 | 54.09 | < 0.0001 | 0.946 |
| Year | 1 | 0.043 | 14.76 | 0.0004 | |
| Site | 6 | 0.057 | 3.28 | 0.0102 | |
| Year*Site | 6 | 0.060 | 3.40 | 0.0084 | |