Table 3.
Conditioned behavioural responses of sensory-impaired sharks to presentation of stronger magnetic stimuli.
| Trial no. | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Β field (µT) | 8 | 8 | 5.3 | 1.2 | 1.4 |
| No. sharks | 5 | 5 | 5 | 5 | 5 |
| Minute | Passes over target | ||||
| 1 | 1 | 0 | 5 | 1 | 1 |
| 2 | 3 | 0 | 2 | 1 | 1 |
| 3 | 0 | 2 | 1 | 2 | 1 |
| 4 | 0 | 1 | 1 | 1 | 2 |
| 5 | 1 | 0 | 4 | 0 | 2 |
| 6 | 0 | 1 | 0 | 1 | 4 |
| 7 | 0 | 2 | 3 | 2 | 2 |
| 8 | 1 | 1 | 4 | 2 | 1 |
| 9 | 1 | 3 | 3 | 2 | 2 |
| 10 | 2 | 0 | 2 | 3 | 2 |
| 11 | 9 | 12 | 8 | 5 | 3 |
| 12 | 4 | 2 | 2 | 0 | 1 |
| 13 | 2 | 1 | 1 | 3 | 1 |
| 14 | 2 | 2 | 1 | 1 | 2 |
| 15 | 0 | 1 | 3 | 1 | 1 |
| 16 | 0 | 3 | 2 | 1 | 1 |
| 17 | 1 | 0 | 2 | 0 | 1 |
| 18 | 1 | 0 | 1 | 3 | 0 |
| 19 | 1 | 1 | 2 | 0 | 5 |
| 20 | 2 | 0 | 5 | 2 | 2 |
| 21 | 0 | 1 | 1 | 2 | 2 |
Counts of passes over the target, summed for all sharks (n = 5), for each minute of each trial are shown. S+ (11th) minute is highlighted in bold.