TABLE 6

Predicted rates of change of mean or scaled increments of variance for one generation of spontaneous mutation expressed on a per genome basis, and observed CVM estimates from spontaneous mutation accumulation experiments

Predicted
Lethal rate modelBristle variance modelObserved
Trait% ΔM */M% CVM% AM*/M% CVM% CVM
Viability−0.213.8−0.0481.82.1
Fecundity−0.393.3−0.0891.61.9
Hatchability−0.425.5−0.0962.61.1a
Development time0.0740.950.0170.46
Longevity−0.512.5−0.121.21.3
Mating speed−0.606.5−0.143.1
Phototaxis−0.113.3−0.0251.6
Body length−0.0180.30−0.00430.140.14
Abdominal bristles−0.0301.0−0.00690.500.25
  • a Data from the spontaneous mutation accumulation experiment of Fernandez and Lopez-Fanjul (1996) (A. Garcia-Dorado, personal communication). All other observed figures are derived from Houle et al. (1996).