Loser-effect duration evolves independently of fighting ability
Loser-effect duration evolves independently of fighting ability
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DOI：
10.1098/rspb.2019.0582
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发表时间：
2019-05
期刊：
影响因子：
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通讯作者：
K. Okada;Y. Okada;Sasha R. X. Dall;D. Hosken
中科院分区：
文献类型：
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作者：
K. Okada;Y. Okada;Sasha R. X. Dall;D. Hosken
比赛的输赢会影响随后的竞争行为，而且这些影响的持续时间会延长。虽然很明显，影响取决于社会和发展环境，但它们在多大程度上是可遗传的，从而是可进化的，就不那么清楚了，而且尚未得到检验。此外，理论预测赢家和输家的影响应该独立于实际战斗能力而发展，但对这一预测的测试也是有限的。本研究通过对复制的甲虫种群进行人工选择，证明了失败者效应的持续时间是可以进化的，实现遗传率约为17%。我们还发现，天真的战斗能力不会随着失败者效应持续时间的减少而共同进化。我们将讨论这些发现的含义以及它们如何证实理论预测。
Winning or losing contests can impact subsequent competitive behaviour and the duration of these effects can be prolonged. While it is clear effects depend on social and developmental environments, the extent to which they are heritable, and hence evolvable, is less clear and remains untested. Furthermore, theory predicts that winner and loser effects should evolve independently of actual fighting ability, but again tests of this prediction are limited. Here we used artificial selection on replicated beetle populations to show that the duration of loser effects can evolve, with a realized heritability of about 17%. We also find that naive fighting ability does not co-evolve with reductions in the duration of the loser effect. We discuss the implications of these findings and how they corroborate theoretical predictions.