Receiver response to high-intensity courtship differs with courter status in spotted bowerbirds Ptilonorhynchus maculatus.

IF 2.9 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Royal Society Open Science Pub Date : 2024-10-23 eCollection Date: 2024-10-01 DOI:10.1098/rsos.232015
Giovanni Spezie, Dan C Mann, Job Knoester, Thomas MacGillavry, Leonida Fusani
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引用次数: 0

Abstract

Understanding sexual communication requires assessing the behaviour of both the sender and the receiver. Receiver responses to sexual displays carry relevant information, but such signals or cues may be subtle and therefore technically challenging to investigate. Here, we focus on receiver body movements in response to high-intensity courtship in spotted bowerbirds (Ptilonorhynchus maculatus). Male bowerbirds perform a vigorous courtship choreography on dedicated display structures-bowers. Bower owners tolerate other non-territorial males at their bowers, yet the courtship displays of these so-called 'subordinate' males rarely result in successful copulations. Males that display at high intensity are preferred by females in this species, yet excessively aggressive displays may be threatening, hence scaring prospective mates away. In this study, we hypothesized that bower owners are better able to exhibit high-intensity movements without startling their audience compared with subordinate males. To address this question, we used a combination of behavioural coding and AI-based tracking of body movements, which allows precise spatial and temporal resolution for the study of subtle behavioural responses. Contrary to our predictions, we found that bower owners evoked stronger startle responses than subordinate males. We discuss these unexpected results and suggest further experimental approaches for future investigations.

受体对高强度求偶的反应随斑头雁的求偶者身份而异。
了解性交流需要评估发送者和接收者的行为。接收者对性展示的反应包含相关信息,但这些信号或线索可能很微妙,因此在技术上具有研究难度。在这里,我们重点研究了斑腰鸟(Ptilonorhynchus maculatus)在高强度求偶时接收者的身体运动。雄性斑腰鸟在专用的展示结构--花棚上进行激烈的求偶编排。展示台的主人允许其他非领地雄鸟在其展示台上展示,但这些所谓的 "从属 "雄鸟的求偶很少能成功交配。在该物种中,高强度展示的雄性更受雌性青睐,但过度的攻击性展示可能具有威胁性,从而吓跑潜在的配偶。在本研究中,我们假设与从属雄性相比,雌性雄性能更好地展示高强度动作,而不会惊吓到观众。为了解决这个问题,我们结合使用了行为编码和基于人工智能的肢体运动追踪技术,这种技术可以精确地分辨空间和时间,从而研究细微的行为反应。与我们的预测相反,我们发现碉堡主人比从属雄性唤起了更强烈的惊吓反应。我们讨论了这些出乎意料的结果,并为今后的研究提出了进一步的实验方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Royal Society Open Science
Royal Society Open Science Multidisciplinary-Multidisciplinary
CiteScore
6.00
自引率
0.00%
发文量
508
审稿时长
14 weeks
期刊介绍: Royal Society Open Science is a new open journal publishing high-quality original research across the entire range of science on the basis of objective peer-review. The journal covers the entire range of science and mathematics and will allow the Society to publish all the high-quality work it receives without the usual restrictions on scope, length or impact.
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