. | Low food/early JHAi (sub-threshold) . | Low food/late JHAi (supra-threshold) . | High food/early JHAi (supra-threshold) . | High food/late JHAi (supra-threshold) . |
---|---|---|---|---|
Consumption rate before JHAi (g dry mass day–1) | 0.058±0.001 | 0.061±0.002 | 0.184±0.016 | 0.131±0.0325 |
Age at JHAi (days) | 40.000±0.000 | 89.000±0.000 | 40.000±0.000 | 89.000±0.000 |
Cumulative amount eaten at JHAi (g dry mass) | 2.282±0.032 | 5.400±0.399 | 7.001±0.367 | 11.127±2.778 |
Consumption rate after JHAi (g dry mass day–1) | 0.059±0.001 | 0.060±0.005 | 0.104±0.011 | 0.099±0.017 |
Cumulative amount eaten at oviposition (g dry mass) | 5.176±0.175 | 7.843±0.495 | 12.692±0.592 | 15.347±3.430 |
. | Low food/early JHAi (sub-threshold) . | Low food/late JHAi (supra-threshold) . | High food/early JHAi (supra-threshold) . | High food/late JHAi (supra-threshold) . |
---|---|---|---|---|
Consumption rate before JHAi (g dry mass day–1) | 0.058±0.001 | 0.061±0.002 | 0.184±0.016 | 0.131±0.0325 |
Age at JHAi (days) | 40.000±0.000 | 89.000±0.000 | 40.000±0.000 | 89.000±0.000 |
Cumulative amount eaten at JHAi (g dry mass) | 2.282±0.032 | 5.400±0.399 | 7.001±0.367 | 11.127±2.778 |
Consumption rate after JHAi (g dry mass day–1) | 0.059±0.001 | 0.060±0.005 | 0.104±0.011 | 0.099±0.017 |
Cumulative amount eaten at oviposition (g dry mass) | 5.176±0.175 | 7.843±0.495 | 12.692±0.592 | 15.347±3.430 |
Female lubber grasshoppers were manipulated to create one sub-threshold feeding group at JHAi and three supra-threshold feeding groups at JHAi. By manipulating food amount and hormone timing, we tested whether JH alone was sufficient to undergo vitellogenesis or if a cumulative feeding threshold was also necessary