Table 2.
Resident-intruder test in reciprocal F1 crosses.
| (B × M)F1 | (M × B)F1 | |||
|---|---|---|---|---|
| 1st | 2nd | 1st | 2nd | |
| NUMBER OF ANIMALS | ||||
| Total resident males | 10 | 10 | 10 | 10 |
| Males that showed attack bites | 6 | 8 | 9a | 10a |
| % aggressive males | 60 % | 80 % | 90 % | 100 % |
| DETAILED BEHAVIORS | ||||
| Attack bites (f) | 25.0 ± 8.9 | 31.6 ± 7.4a | 44.9 ± 9.7a | 42.8 ± 11.5a |
| Sideways threats (d) | 8.2 ± 2.3 | 8.3 ± 1.6 | 13.5 ± 2.8a | 11.4 ± 3.3 |
| Tail rattles (d) | 4.6 ± 1.6 | 12.3 ± 4.7 | 17.0 ± 6.1a | 19.8 ± 7.5a |
| Pursuit (d) | 4.0 ± 1.8b | 7.6 ± 3.4b | 5.9 ± 1.9b | 4.4 ± 1.7b |
| Walking (d) | 79.3 ± 5.2a | 80.5 ± 7.0 | 73.5 ± 7.2a | 55.7 ± 8.8a |
| Rearing (d) | 50.3 ± 10.1b | 36.4 ± 6.8 | 32.7 ± 7.5 | 16.7 ± 6.7 |
| Grooming (d) | 13.5 ± 5.5 | 9.8 ± 2.0 | 9.3 ± 4.8 | 9.5 ± 3.0 |
| Contact (d) | 48.1 ± 15.4 | 26.9 ± 11.0 | 43.0 ± 13.8 | 8.4 ± 5.8 |
| Attack latency | 197.0 ± 27a | 111.9 ± 33a | 89.4 ± 26abc | 58.6 ± 14a |
Significant differences compared with B6 (
a
), MSM (
b
) (Table 1) and (B×M)F1 (
c
) by Tukey-Kramer test (p < 0.05). (f): frequency, (d): duration.