Summary of the four locomotory stages of the alternate reaction in cuttlefish
| . | Stage 1 . | Stage 2 . | Stage 3 . | Stage 4 . | End of experiment . |
|---|---|---|---|---|---|
| Defining locomotion | Slowing of movements | Behavioural freezing | Resumption of movement | Swimming | Resumption of resting behaviour |
| Duration | 3 s (2,5 s) | 3 s (3,12 s) | 40 s (13,77 s) | 9 min (7,16 min) | N/A |
| Important ventilatory and cardiac events (see Table 4) | Heart rate decreased below resting levels | Ventilation rate decreased below resting levels | Ventilation rate and heart rate recovered | Rates impossible to measure due to swimming | Ventilation rate and heart rate returned to resting |
| Important chromatic and textural events (see text) | Rapid chromatic and textural changes | Some textural changes; Deimatic Display | Recovery from Deimatic Display | Recovery from Deimatic Display | None |
| . | Stage 1 . | Stage 2 . | Stage 3 . | Stage 4 . | End of experiment . |
|---|---|---|---|---|---|
| Defining locomotion | Slowing of movements | Behavioural freezing | Resumption of movement | Swimming | Resumption of resting behaviour |
| Duration | 3 s (2,5 s) | 3 s (3,12 s) | 40 s (13,77 s) | 9 min (7,16 min) | N/A |
| Important ventilatory and cardiac events (see Table 4) | Heart rate decreased below resting levels | Ventilation rate decreased below resting levels | Ventilation rate and heart rate recovered | Rates impossible to measure due to swimming | Ventilation rate and heart rate returned to resting |
| Important chromatic and textural events (see text) | Rapid chromatic and textural changes | Some textural changes; Deimatic Display | Recovery from Deimatic Display | Recovery from Deimatic Display | None |
Duration is expressed as the median over all cuttlefish (N=6; 1st,3rd quartiles in parentheses). Also included are the important ventilation rate, heart rate and chromatic and textural changes.