The role of body size and fighting experience in predicting contest behaviour in the black field cricket, Teleogryllus commodus
The role of body size and fighting experience in predicting contest behaviour in the black field cricket, Teleogryllus commodus
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DOI：
10.1007/s00265-010-1030-0
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发表时间：
2011-02
影响因子：
2.3
通讯作者：
L. Reaney;Jean M. Drayton;M. Jennions
中科院分区：
文献类型：
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作者：
L. Reaney;Jean M. Drayton;M. Jennions
在许多物种中，身体大小强烈地预测了战斗行为和结果，较大的对手通常会赢得比赛。然而，最近的战斗经验可以对优势等级的建立产生强烈的影响，最近的赢家更有可能赢得随后的比赛，而最近的输家更有可能失败。因此，最近的战斗经验有可能改变身体大小在决定比赛行为和结果的影响。在这里，我们调查最近的战斗经验是否削弱了身体大小的作用，在预测比赛的行为在黑色的领域板球，Teleogryllus commodus。我们比较了身体大小的作用，在最初的非身体接触和升级的攻击性身体接触（格斗），以及升级发生的概率，在比赛中涉及一个天真的或经验丰富的较小的男性对一个天真的较大的男性在确定比赛的结果。我们发现，最近的战斗经验只影响比赛结果在非物理遭遇。一旦比赛升级为格斗，先前的输赢的影响就不再明显，身体大小强烈预测比赛结果。因此，一旦男性可以直接评估他们的对手的战斗能力，最近的战斗经验并没有改变身体大小对比赛行为和结果的影响。
Body size strongly predicts fighting behaviour and outcome in many species, with the larger opponent usually winning contests. However, recent fighting experience can have a strong influence on the establishment of dominance hierarchies, with recent winners being more likely to win subsequent contests, while recent losers are more likely to lose. Recent fighting experience therefore has the potential to modify the effect of body size in determining contest behaviour and outcome. Here, we investigate whether recent fighting experience weakens the role of body size in predicting contest behaviour in the black field cricket,Teleogryllus commodus. We compared the role of body size in determining contest outcome during initial non-physical encounters and escalated aggressive physical encounters (grapples), as well as the probability of escalation occurring, in contests involving either a naïve or experienced smaller male against a naïve larger male. We found that recent fighting experience only affected contest outcome during non-physical encounters. Once a contest had escalated into grappling, the effect of previous wins and losses was no longer apparent and body size strongly predicted contest outcome. Thus, once males can directly assess their opponent's fighting ability, recent fighting experience did not alter the effect of body size on contest behaviour and outcome.