Table 1.

Comparison of fight duration (min) and proportion of escalated fights in different types of interactions: W_CL_C, first interaction between control males; W_CN, second interaction of control males between previous winner and naive individual; L_CN, second interaction of control males between previous loser and naive individual; W_TL_T, first interaction between males of the treated groups; W_TN, second interaction of previous winner treated with CA and naive individual; L_TN, second interaction of previous loser treated with KT and naive individual. (Different letters indicate significant differences between types of interaction within each treatment. For fight duration, differences between groups were assessed using a non-parametric Friedman ANOVA followed by post hoc Dunn tests. For percentage of escalated fights, differences between groups were estimated using the difference between two proportions test of the software Statistica.)

type of interaction	n	fight duration (min)	percentage of escalated fights
control groups
WCLC	16	45.9±11.1 a	43.75 a
WCN	16	38.3±8.9 a	25 a
LCN	16	40.8±9.9 a	37.5 a
treated groups
WTLT	16	27.6±4.2 a	62.5 a
WTN	16	31.8±5.6 a	31.25 ab
LTN	16	20.6±0.7 b	12.5 b