Female preferences for the spectral content of advertisement calls in Cope’s gray treefrog (Hyla chrysoscelis)

Female preferences for the spectral content of advertisement calls in Cope’s gray treefrog (Hyla chrysoscelis)
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科普灰树蛙 (Hyla chrysoscelis) 中雌性对广告叫声的光谱内容的偏好

DOI:
10.1007/s00359-022-01575-w
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发表时间:
2023
期刊:
Journal of Comparative Physiology A
影响因子:
--
通讯作者:
Bee, Mark A.
Bee, Mark A.
中科院分区:
--
文献类型:
--
作者:
Gupta, Saumya;Bee, Mark A.

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两栖类动物的内耳有两个感觉乳头,它们能适应不同频率范围的空气传播的声音。在青蛙,男性广告电话具有独特的光谱成分,匹配的调谐一个或两个感觉乳头。女性对广告呼叫的频谱内容的偏好可以取决于信号幅度,并且可以在密切相关的谱系中变化。在这项研究中的科普的灰色树蛙(Hyla chrysoscelis),我们调查了幅度依赖性的女性偏好的频谱内容的男性广告电话,这有一个“双峰”频谱与单独的低频(1.25 kHz)和高频(2.5 kHz)的组件。在两个替代选择测试中,女性一般喜欢合成的电话与双峰光谱的“单峰”呼叫只有一个的两个光谱成分。他们也更喜欢具有高频成分的单峰呼叫,而不是低频成分。除了少数例外,偏好在很大程度上与整个信号幅度的30 dB范围和两个频谱分量的相对幅度的11 dB范围内的幅度无关。我们讨论了这些结果的背景下,在进化的不稳定性在女性的喜好,广告的频谱内容的呼吁在北美树蛙genusHyla。
Amphibians have inner ears with two sensory papillae tuned to different frequency ranges of airborne sounds. In frogs, male advertisement calls possess distinct spectral components that match the tuning of one or both sensory papillae. Female preferences for the spectral content of advertisement calls can depend on signal amplitude and can vary among closely related lineages. In this study of Cope’s gray tree frog (Hyla chrysoscelis), we investigated the amplitude dependence of female preferences for the spectral content of male advertisement calls, which have a “bimodal” spectrum with separate low-frequency (1.25 kHz) and high-frequency (2.5 kHz) components. In two-alternative choice tests, females generally preferred synthetic calls with bimodal spectra over “unimodal” calls having only one of the two spectral components. They also preferred unimodal calls with a high-frequency component over one with the low-frequency component. With few exceptions, preferences were largely independent of amplitude across both a 30 dB range of overall signal amplitude and an 11 dB range in the relative amplitudes of the two spectral components. We discuss these results in the context of evolutionary lability in female preferences for the spectral content of advertisement calls in North American tree frogs in the genusHyla.
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