Testosterone amplifies the negative valence of an agonistic gestural display by exploiting receiver perceptual bias

Testosterone amplifies the negative valence of an agonistic gestural display by exploiting receiver perceptual bias
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睾酮通过利用接收者感知偏差来放大竞争性手势显示的负效价

DOI:
10.1098/rspb.2021.1848
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发表时间:
2021
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
通讯作者:
Fuxjager, Matthew J.
Fuxjager, Matthew J.
中科院分区:
--
文献类型:
--
作者:
Anderson, Nigel K.;Grabner, Martina;Mangiamele, Lisa A.;Preininger, Doris;Fuxjager, Matthew J.

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许多动物通过表演精心制作的表演来交流,这些表演令人难以置信的奢侈和疯狂。那么,这些显示器是如何进化的呢?一种观点认为,先天的感官偏见武断地倾向于某些展示特征的出现,导致了一种不寻常的展示设计。在这里,我们研究了与信号产生相关的生理因素如何影响这一过程,这是一个几乎没有受到关注的话题。我们关注的是一种热带青蛙,它的雄性通过精心制作的挥手表演来争夺雌性。我们的研究结果表明,像睾丸激素这样的性激素调节特定的展示手势,这些手势利用了高度保守的感知系统,最初进化是为了检测环境中的“危险”刺激。因此,在战斗中,睾丸激素会让某些姿势看起来对对手更危险。这表明,激素作用可以与感官偏见的影响相互作用,以创造一个进化的最佳状态,指导如何显示夸张展开。
Many animals communicate by performing elaborate displays that are incredibly extravagant and wildly bizarre. So, how do these displays evolve? One idea is that innate sensory biases arbitrarily favour the emergence of certain display traits over others, leading to the design of an unusual display. Here, we study how physiological factors associated with signal production influence this process, a topic that has received almost no attention. We focus on a tropical frog, whose males compete for access to females by performing an elaborate waving display. Our results show that sex hormones like testosterone regulate specific display gestures that exploit a highly conserved perceptual system, evolved originally to detect ‘dangerous' stimuli in the environment. Accordingly, testosterone makes certain gestures likely to appear more perilous to rivals during combat. This suggests that hormone action can interact with effects of sensory bias to create an evolutionary optimum that guides how display exaggeration unfolds.
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