Table 1.
Hypotheses for the main effects of several factors on larval time, pupal time, larval growth rate, pupal mass, chill-coma recovery time, and longevity
|
Traits |
Factors |
|||||
|---|---|---|---|---|---|---|
| Selection regime | Inbreeding | Rearing temperature | Sex | Adult temperature | Feeding regime | |
|
Larval time |
No |
No |
20°C > 27°C |
Females > Males |
- |
- |
|
Pupal time |
No |
No |
20°C > 27°C |
Males > Females |
- |
- |
|
Growth rate |
No |
No |
27°C > 20°C |
Males > Females |
- |
- |
|
Pupal mass |
No |
No |
20°C > 27°C |
Females > Males |
- |
- |
|
Chill-coma recovery time |
Controls > Selected Lines |
No |
27°C > 20°C |
No |
27°C > 20°C |
No |
| Longevity | No | No | 20°C > 27°C | Females > Males | 20°C > 27°C | Control > Starvation |
The hypotheses stated rest on prior results mainly obtained from B. anynana. Selection for increased cold tolerance is expected to have no effect on any trait other than chill-coma recovery time, as no correlated responses to selection were found in a previous study [34]. No inbreeding effects are expected here due to random mating for 14 generations after full-sib matings and thus prior to scoring trait values. Hypotheses regarding temperature, sex and feeding effects are all straight-forward and rest on previous results [e.g. [5,17,20,23,34,36,37]. ‘-‘: Not tested.