Table 2

Intermale aggressive behaviors after castration

TreatmentGenotypeLatency, secDuration, secBouts, no. per 10 minn
Sham + oilC57BL/6157  ± 75305  ± 959.8  ± 2.76
PRKO393  ± 110101  ± 45.213.7  ± 3.89
C + OC57BL/6299.8  ± 122.678.3  ± 51.58.1  ± 2.16
PRKO269.7  ± 10659.8  ± 44.87.9  ± 2.99
C + TC57BL/6132.4  ± 30182.2  ± 28.2*18.4  ± 25
PRKO249.7  ± 104127.4  ± 4521.9  ± 5.79
  • 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.