Hormonal regulation of offspring begging and mediation of parent-offspring conflict
Hormonal regulation of offspring begging and mediation of parent-offspring conflict
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后代乞讨的荷尔蒙调节与亲子冲突的调解
DOI：
10.1016/j.anbehav.2010.11.029
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发表时间：
2011
期刊：
影响因子：
2.5
通讯作者：
Smiseth P
中科院分区：
文献类型：
--
作者：
Smiseth P
近年来，人们对内源性和母体激素作为子代乞讨调节因子和亲子冲突调解因子的作用产生了浓厚的兴趣。在这里，我们回顾了最近在这一领域的工作，并确定文献中的不一致之处。我们发现了很好的证据，表明激素在乞讨中起着调节作用：13项研究报告了对乞讨的积极影响，6项研究报告了负面影响。也有很好的证据表明，激素会影响后代的健康，但报告的影响方向是不一致的：8项研究报告对后代的健康有积极影响，10项有负面影响。我们探索了激素对乞讨和生长的影响的潜在途径。我们发现，我们目前对这些途径的理解是不完整的，并提出了一个简单的模型，将激素对乞讨和生长的影响联系起来。接下来，我们将讨论激素作为父母-子女冲突调解人的作用。我们发现很少有证据表明母性激素提供了父母偏爱的机制。我们使用图形模型来探索假设，母体激素作为诚实的信号，并发现激素生产的成本可以确保母体激素的诚实，但只有在非常有限的条件下。我们讨论的证据，从最近的交叉培养实验表明，母性激素的作用在父母和后代之间的利益重叠的背景下。最后，我们强调需要更多的研究nonavian类群，以确定是否激素调节乞讨是特定的鸟类或一般跨类群的后代乞求父母的食物。
Recently, there has been much interest in the role of endogenous and maternal hormones as regulators of offspring begging and mediators of parent–offspring conflict. Here, we review recent work in this field, and identify inconsistencies in the literature. We find good evidence that hormones play a role as regulators of begging: 13 studies report a positive effect on begging and six a negative effect. There is also good evidence that hormones influence offspring fitness, but the direction of reported effects is inconsistent: eight studies report a positive effect on offspring fitness and 10 a negative effect. We explore potential pathways linking hormonal effects on begging and growth. We find that our current understanding of these pathways is incomplete, and suggest a simple model linking hormonal effects on begging and growth. We next discuss the role of hormones as mediators of parent–offspring conflict. We find little evidence that maternal hormones provide a mechanism for parental favouritism. We use graphical models to explore the hypothesis that maternal hormones act as honest signals, and find that costs of hormone production can ensure the honesty of maternal hormones but only under very restricted conditions. We discuss evidence from recent cross-fostering experiments suggesting that maternal hormones act in the context of overlapping interests between parents and offspring. Finally, we highlight the need for more studies on nonavian taxa to establish whether hormonal regulation of begging is specific to birds or general across taxa where offspring beg for food from their parents.