Quantitative analysis of harmonic convergence in mosquito auditory interactions
Quantitative analysis of harmonic convergence in mosquito auditory interactions
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DOI：
10.1098/rsif.2015.1007
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发表时间：
2016-04-01
影响因子：
3.9
通讯作者：
Robert, Daniel
中科院分区：
文献类型：
--
作者：
Aldersley, Andrew;Champneys, Alan;Robert, Daniel
本文分析了蚊子在个体间声音相互作用的背景下的听觉和行为。在独立且独特的音频通道上记录来自该物种的同性和异性蚊子的埃及伊蚊蚊子的拴系的活对的声学相互作用，以及拴系的个体蚊子对单独或成对个体的预先记录的飞行音调的回放的响应。基于希尔伯特谱分析，构造了每只蚊子的非平稳翅膀拍频特征的时间相关表示。开发了一系列算法工具来自动分析这些数据，并用于对“谐波收敛”现象进行可靠的定量识别。结果表明，谐波收敛是一种活跃的现象，它不是偶然发生的。它发生在现场对，以及为单独的个人回应回放录音，无论是来自同性或异性。男性-女性的行为是占主导地位的频率收敛在一个更广泛的谐波组合比以前报道的，并需要参与双方的合作伙伴在二重奏。新的证据表明，男性之间的相互作用比严格的频率回避更多样化。相反，它们可以分为两组：会聚对，以紧密结合的翼拍频率为代表，和发散对，在频域中保持广泛的间隔。总的来说，结果表明，蚊子声相互作用是一个微妙的和复杂的时间依赖性的主动过程，涉及两个人，发生在许多不同的频率，值得进一步调查。
This article analyses the hearing and behaviour of mosquitoes in the context of inter-individual acoustic interactions. The acoustic interactions of tethered live pairs of Aedes aegypti mosquitoes, from same and opposite sex mosquitoes of the species, are recorded on independent and unique audio channels, together with the response of tethered individual mosquitoes to playbacks of pre-recorded flight tones of lone or paired individuals. A time-dependent representation of each mosquito's non-stationary wing beat frequency signature is constructed, based on Hilbert spectral analysis. A range of algorithmic tools is developed to automatically analyse these data, and used to perform a robust quantitative identification of the `harmonic convergence' phenomenon. The results suggest that harmonic convergence is an active phenomenon, which does not occur by chance. It occurs for live pairs, as well as for lone individuals responding to playback recordings, whether from the same or opposite sex. Male-female behaviour is dominated by frequency convergence at a wider range of harmonic combinations than previously reported, and requires participation from both partners in the duet. New evidence is found to show that male-male interactions are more varied than strict frequency avoidance. Rather, they can be divided into two groups: convergent pairs, typified by tightly bound wing beat frequencies, and divergent pairs, that remain widely spaced in the frequency domain. Overall, the results reveal that mosquito acoustic interaction is a delicate and intricate time-dependent active process that involves both individuals, takes place at many different frequencies, and which merits further enquiry.