Vermilion flycatchers avoid singing during sudden peaks of anthropogenic noise

IF 1.1 4区 生物学 Q4 BEHAVIORAL SCIENCES
Isaac Muñoz-Santos, Alejandro Ariel Ríos-Chelén
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引用次数: 0

Abstract

In many animals, vocalizations are necessary for social interactions to occur; however, anthropic noise can pose a problem as it can disrupt acoustic communication. Oscine birds display a variety of strategies to presumably increase the chances of detection in noisy habitats. On the other hand, suboscines, a group of birds with arguably less vocal flexibility, have been less studied, and we have a poor understanding of the strategies that they may use to cope with noise. Anecdotal evidence suggests that vermilion flycatchers (Pyrocephalus rubinus), a suboscine that produces song bouts, interrupts its bouts in the presence of sudden urban noise (SUN, e.g., when a car passes by), avoiding peak noise. To test this idea, we conducted a playback experiment on 27 free-living males. We recorded the song bouts of each individual: before playback, during SUN playback, and after playback. Ambient noise and artificial light at night (ALAN) have been shown to influence bird singing. To evaluate if there is an association between these pollutants and birds’ response to SUN, we also measured mean ambient noise, ambient noise coefficient of variation, and ALAN in the males’ territories. We found that birds sang shorter bouts during the SUN treatment. Song bout length during the SUN treatment was not associated with mean noise levels or coefficient of variation in males’ territories; however, it was positively associated with ALAN. This result was dependent upon an influential point and should be taken cautiously. We found no association between singing recovery (latency to sing and song bout length after SUN relative to before SUN) and mean ambient noise, ambient noise coefficient of variation, and ALAN. Our results show SUN-induced temporal singing flexibility and suggest that vermilion flycatchers are well adapted to acoustically polluted environments, with males living in territories with more light pollution possibly being less affected by traffic noise peaks. A previous study showed that song bout length is an important signal during intra-sexual interactions; interrupting this acoustic component may have important consequences during social interactions.

Abstract Image

在人为噪音突然达到峰值时,朱蝇会避免唱歌
在许多动物中,发声是社会互动发生的必要条件;然而,人为噪声会造成问题,因为它会破坏声学通信。鸣禽表现出各种各样的策略,可能是为了增加在嘈杂的栖息地被发现的机会。另一方面,亚种,一种可以说声音灵活性较差的鸟类,被研究得较少,我们对它们应对噪音的策略知之甚少。轶事证据表明,朱红捕蝇鸟(Pyrocephalus rubinus)是一种产生鸣叫的水下生物,在突然出现的城市噪音(太阳,例如,当汽车经过时)中会中断鸣叫,以避免噪音峰值。为了验证这个想法,我们对27个自由生活的雄性进行了回放实验。我们记录了每个人的歌曲回合:播放前,播放中,播放后。环境噪音和夜间人造光(ALAN)已被证明会影响鸟类的歌唱。为了评估这些污染物与鸟类对太阳辐射的反应之间是否存在关联,我们还测量了雄性领地的平均环境噪声、环境噪声变异系数和ALAN。我们发现,在太阳照射期间,鸟类的歌唱时间缩短了。在太阳照射期间,鸣叫回合长度与雄性领地的平均噪音水平或变异系数无关;然而,它与ALAN呈正相关。这个结果依赖于一个有影响的点,应该谨慎对待。我们发现,歌唱恢复(相对于太阳活动前的歌唱潜伏期和歌曲回合长度)与平均环境噪声、环境噪声变异系数和ALAN之间没有关联。我们的研究结果显示了太阳引起的时间歌唱灵活性,并表明朱红色捕蝇鸟很好地适应了噪音污染的环境,雄性生活在光污染较多的地区,可能受交通噪音峰值的影响较小。先前的一项研究表明,歌曲回合长度是性内互动的一个重要信号;打断这种声音成分可能会在社会交往中产生重要后果。
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来源期刊
acta ethologica
acta ethologica 生物-动物学
CiteScore
1.90
自引率
0.00%
发文量
18
审稿时长
>12 weeks
期刊介绍: acta ethologica publishes empirical and theoretical research papers, short communications, commentaries, reviews and book reviews as well as methods papers in the field of ethology and related disciplines, with a strong concentration on the behavior biology of humans and other animals. The journal places special emphasis on studies integrating proximate (mechanisms, development) and ultimate (function, evolution) levels in the analysis of behavior. Aspects of particular interest include: adaptive plasticity of behavior, inter-individual and geographic variations in behavior, mechanisms underlying behavior, evolutionary processes and functions of behavior, and many other topics. acta ethologica is an official journal of ISPA, CRL and the Portuguese Ethological Society (SPE)
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