Table 2.
Intermale aggressive behaviors after castration
| Treatment | Genotype | Latency, sec | Duration, sec | Bouts, no. per 10 min | n |
|---|---|---|---|---|---|
| Sham + oil | C57BL/6 | 157 ± 75 | 305 ± 95 | 9.8 ± 2.7 | 6 |
| PRKO | 393 ± 110 | 101 ± 45.2 | 13.7 ± 3.8 | 9 | |
| C + O | C57BL/6 | 299.8 ± 122.6 | 78.3 ± 51.5 | 8.1 ± 2.1 | 6 |
| PRKO | 269.7 ± 106 | 59.8 ± 44.8 | 7.9 ± 2.9 | 9 | |
| C + T | C57BL/6 | 132.4 ± 30 | 182.2 ± 28.2* | 18.4 ± 2† | 5 |
| PRKO | 249.7 ± 104 | 127.4 ± 45 | 21.9 ± 5.7‡ | 9 |
No difference in intermale aggression was observed between C57BL/6 and PRKO males in response to castration. Males were tested by using the resident–intruder with standardized intruder paradigm. C, castrated; O, sesame oil.
*
P < 0.04 vs. oil treatment.
†
P < 0.004 vs. oil treatment.
‡
P < 0.02 vs. oil treatment.