Effects of anthropogenic noise on male signalling behaviour and female phonotaxis in Oecanthus tree crickets
Effects of anthropogenic noise on male signalling behaviour and female phonotaxis in Oecanthus tree crickets
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DOI：
10.1016/j.anbehav.2014.05.009
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发表时间：
2014-09-01
期刊：
影响因子：
2.5
通讯作者：
Symes, Laurel B.
中科院分区：
文献类型：
--
作者：
Costello, Robin A.;Symes, Laurel B.
交流对生物体的生存和繁殖成功至关重要。越来越多的证据表明，人为噪声会干扰声音通信。虽然最近的研究已经测试了信号发送者是否会在行为上修改他们的信号以防止被噪音掩盖，但研究直到最近才开始测试噪音是否实际上干扰了对声音信号的感知。在这项研究中，我们调查了道路噪音如何影响雄树蟋蟀的信号和雌树蟋蟀的趋声性。树蟋蟀的声信号振幅相对较低，主要由低频组成，很可能被道路噪声所掩盖。为了确定在道路噪音存在的情况下雄性是否会改变它们的叫声，我们评估了回放记录的道路噪音如何改变雄性的四个叫声特征：主要频率、叫声幅度、总叫声时间和开始叫声的延迟时间。然后，我们使用反应试验来测试雌性在道路噪音存在的情况下定位和响应雄性叫声的能力。与其他生物的研究不同，这些研究发现了雄性信号特征的可量化差异，雄性树蟋蟀不太可能鸣叫，但不会改变信号特征。令人惊讶的是，尽管道路噪音有潜在的掩蔽作用，但女性对男性信号的反应并未受到道路噪音的影响。因为树蟋蟀经常在环境中与许多种类的鸣叫昆虫交流，树蟋蟀可能适应了忍受新的声音干扰源。这项研究提出了一个男性信号和女性反应不受道路噪音影响的案例。由于噪声对物种的影响是不同的，因此对行为和感觉系统的详细了解对于预测声学干扰对营养相互作用和种群动态的影响可能是必要的。(C) 2014动物行为研究协会。Elsevier Ltd.出版。版权所有。
Communication is vital to the survival and reproductive success of organisms. There is growing evidence that anthropogenic noise interferes with acoustic communication. While recent studies have tested whether signallers behaviourally modify their signals to prevent masking from noise, studies have only recently begun to test whether noise in fact interferes with the perception of acoustic signals. In this study, we investigated how road noise affects both male signalling and female phonotaxis in Oecanthus tree crickets. Acoustic signals of tree crickets, which are relatively low amplitude and composed primarily of low frequencies, are likely to be masked by road noise. To determine whether males alter their calls in the presence of road noise, we assessed how a playback of recorded road noise changed four male calling characteristics: dominant frequency, call amplitude, total time spent calling and latency to begin calling. We then used response trials to test the ability of females to localize and respond to male calls in the presence of road noise. Unlike studies in other organisms, which detected quantifiable differences in male signal characteristics, male tree crickets were less likely to call but did not change signal characteristics. Surprisingly, female response to male signals was not affected by the presence of road noise, despite the potential masking effects of road noise. Because tree crickets often communicate in environments with many species of calling insects, tree crickets may be adapted to tolerate novel sources of acoustic interference. This study presents a case where male signals and female responses are not affected by road noise. Since species are differentially affected by noise, detailed understanding of behaviour and sensory systems may be necessary for predicting the effect of acoustic interference on trophic interactions and population dynamics. (C) 2014 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.