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No evidence that kin selection increases the honesty of begging signals in birds

机译:没有证据表明亲属选择可以提高鸟类乞讨信号的真实性

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Providing plausible mechanisms to explain variation in the honesty of information communicated through offspring begging signals is fundamental to our understanding of parent–offspring conflict and the evolution of family life. A recently published research article used comparative analyses to investigate two long‐standing hypotheses that may explain the evolution of begging behavior. The results suggested that direct competition between offspring for parental resources decreases begging honesty, whereas indirect, kin‐selected benefits gained through saving parental resources for the production of future siblings increase begging honesty. However, we feel that evidence for a role of kin selection in this context is still missing. We present a combination of arguments and empirical tests to outline alternative sources of interspecific variation in offspring begging levels and discuss avenues for further research that can bring us closer to a complete understanding of the evolution of offspring signaling.
机译:提供合理的机制来解释通过后代乞求信号传达的信息诚实度的变化,这是我们了解父母与后代冲突和家庭生活演变的基础。最近发表的一篇研究文章使用比较分析研究了两个长期的假设,这些假设可以解释乞讨行为的演变。结果表明,后代之间在争夺父母资源方面的直接竞争降低了乞讨诚实,而通过节省父母资源来生产未来兄弟姐妹而获得的间接,亲属选择的利益则增加了乞讨诚实。但是,我们认为,在这种情况下,有关亲属选择的作用的证据仍然缺失。我们提出了论据和实证检验的组合,以概述后代乞讨水平种间变异的替代来源,并讨论了进一步研究的途径,可以使我们更完全了解后代信号的演变。

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