Female signal jamming in a socially monogamous brood parasite.
Female signal jamming in a socially monogamous brood parasite.
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一夫一妻制寄生虫的雌性信号干扰。
DOI：
10.1016/j.anbehav.2020.10.011
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发表时间：
2021-03
期刊：
影响因子：
2.5
通讯作者：
Schmidt, Marc F.
中科院分区：
文献类型：
--
作者：
Anderson, H. Luke;Perkes, Ammon;Gottfried, Julian S.;Davies, Hayden B.;White, David J.;Schmidt, Marc F.
关键词：
声音信号在许多动物的求偶过程中是至关重要的，但女性发声的作用还没有得到充分的研究。在这里，我们采用观察和实验相结合的方法来评估褐头牛鸟雌性鸣叫声的求偶功能。虽然聊天叫声可能是多功能的，但在繁殖季节，它经常用于社交活动和与雄性的重叠二重唱。基于大型自然主义鸟类的聚焦和扫描采样数据的组合，我们没有发现支持这样一种假设，即聊天呼叫引起了雄性的注意或鼓励了持续的求爱。然而，我们确实发现了聊天叫声在配对纽带形成中发挥作用的证据，因为在第一次交配的中位数之前的两周里，雌性更愿意对配对纽带雄鸟的歌声做出反应。在交配开始后，雌性在使用雄性定向的聊天时不那么挑剔。我们还发现，聊天被用来干扰男性歌曲的假设也得到了支持。一帧一帧的视频分析显示，大多数女性的聊天呼叫都与歌曲紧密相关，发生在男性发声后不到500ms。为了测试信号干扰对男性歌曲效力的影响，我们设计了一个实验室实验，在这个实验中，男性歌曲回放受到不同记录刺激的干扰。自然鸣叫比高通过滤鸣叫更有效地降低了雌性对鸣声的交配反应，这表明自然鸣叫中的低频(2-4 kHz)对于干扰雄性鸣叫和降低其效力是重要的。我们的结果表明，性冲突在牛鸟的求爱中起作用，信号干扰是雌性保护、抵抗或选择配偶的一种机制。我们还讨论了牛鸟的声音相互作用如何协同发挥作用，以协调繁殖或将雌性转变为繁殖条件。
Acoustic signalling is vital to courtship in many animals, yet the role of female vocalizations is understudied. Here, we combine observational and experimental methods to assess the courtship function of the female chatter call in brown-headed cowbirds, Molothrus ater. While the chatter call is likely multifunctional, it is frequently used in social interactions and overlapping duets with males during the breeding season. Based on a combination of focal- and scan-sampling data from large naturalistic aviaries, we did not find support for the hypothesis that the chatter call elicits male attention or encourages continued courtship. However, we did find evidence that the chatter call plays a role in pair bond formation, as females preferentially chattered in response to songs from pair-bond males in the 2 weeks leading up to the median date of first copulation. Females were less selective in male-directed chatter use after copulations began. We also found support for the hypothesis that chatter is used to signal-jam male songs. Frame-by-frame video analysis revealed that the majority of female chatter calls were tightly time-locked to song, occurring less than 500 ms after male vocal onset. To test the effect of signal jamming on male song potency, we designed a laboratory experiment in which male song playbacks were jammed by various recorded stimuli. Natural chatter calls more effectively reduced female copulatory responses to song than high-pass filtered chatter calls, suggesting that the low frequencies in natural chatter (2–4 kHz) are important for interfering with male song and reducing its potency. Our results suggest that sexual conflict is operating in cowbird courtship, with signal jamming serving as a mechanism by which females guard, resist or select their mates. We also discuss ways in which cowbird vocal interactions may function cooperatively to coordinate reproduction or transition females into breeding condition.
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影响因子：
9.2
作者：
Benichov, Jonathan I.;Benezra, Sam E.;Tchernichovski, Ofer
通讯作者：
Tchernichovski, Ofer
影响因子：
3.7
作者：
Brennan, Patricia L. R.;Prum, Richard O.;Birkhead, Tim R.
通讯作者：
Birkhead, Tim R.
DOI：
10.1002/neu.480250910
发表时间：
1994-09-01
期刊：
JOURNAL OF NEUROBIOLOGY
影响因子：
--
作者：
ALLAN, SE;SUTHERS, RA
通讯作者：
SUTHERS, RA
影响因子：
2.5
作者：
Byers, John;Hebets, Eileen;Podos, Jeffrey
通讯作者：
Podos, Jeffrey
影响因子：
1.7
作者：
Benedict, Lauryn
通讯作者：
Benedict, Lauryn