Relation between dominance rank, prior agonistic intensity and subsequent aggressive levels in winners and losers of dyads of male Green swordtail fish (Xiphophorus helleri)

摘要: Aggressive scores obtained in a mirror test 1h before an encounter were found to be good predictor of victory male Xiphophorus dyads showing less than 5% size differences. Out 36 dyad members higher aggressive at pre-test, 28 the subsequent encounter. It was that future winners more losers their own image tests Initial individual levels also function rank individuals occupied home hierarchies. The rank, level as measured by pre-tests, well post-tests. This relationship applied winners, losers. aggression reached during agonistic not social ranks opponents Males composed two omegas fought fiercely males alphas or betas. No significant noted between initial pre-test and encounters. We existence correlation they increase 24h after victory. intense encounter, important winners; which still detectable However, prior alpha apparently sensitive betas since did change when compared baseline pre-test. After defeat, show any tests. Moreover, it encounters resident met intruder general intruders. Experiential effects are discussed instances learning generalisation.