Table 1.
Avoidance of predator cue |
Attraction to predator cue |
|||
Age posthatch (d) | Time in water stream with cue (%) | No. of individuals | Time in water stream with cue (%) | No. of individuals |
1 | 18.3 | 22 | — | 0 |
2 | 15.9 | 22 | — | 0 |
3 | 22.3 | 22 | — | 0 |
4 | 16.3 | 11 | 77.8 | 9 |
5 | 15.8 | 15 | 74.2 | 5 |
6 | 13.5 | 14 | 84.9 | 8 |
8 | 6.8 | 12 | 88.3 | 10 |
10 | 0.7 | 12 | 84.6 | 13 |
Behavioral responses were tested in a two-channel flume chamber, where one stream of water contained the chemical cue of the predator and the other stream of water did not contain the cue. Responses are split into individuals that avoided the predator cue (<50% of time spent in the water stream containing the cue) and individuals that were attracted to the predator cue (>50% of time spent in the water stream containing the cue).