Mosquito (Aedes aegypti) flight tones: Frequency, harmonicity, spherical spreading, and phase relationships
Mosquito (Aedes aegypti) flight tones: Frequency, harmonicity, spherical spreading, and phase relationships
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DOI：
10.1121/1.4861233
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发表时间：
2014-02-01
影响因子：
2.4
通讯作者：
Hoy, Ronald R.
中科院分区：
文献类型：
--
作者：
Arthur, Benjamin J.;Emr, Kevin S.;Hoy, Ronald R.
蚊子飞行会产生一种音调，这是翅膀运动的副作用；这种音调也是一种通讯信号，在求爱过程中会进行频率调制。被拴住的雄性和雌性埃及伊蚊产生的音调是用一对压力梯度麦克风在一定距离上和下面、前面和后面以及左边和右边进行记录的。基频与之前报道的频率接近，尽管幅度较低。雄鼠的基频高于雌鼠，且雄鼠对其调制范围较大。谐波分析表明，即使在基波被调制时，前六个分音几乎总是在基波的整数倍的1赫兹以内。沿前后轴线，振幅随距离的增加而衰减，其幂为2.3。前后录音是异相的，上面和下面是一样的，而左边和右边是同步的。从前面和后面的录音显示了二次相位耦合，而其他的则没有。最后，给出了两种在一次录音中分离同时飞行音调和提高其频率分辨率的方法。对蚊子行为的影响也进行了讨论。(C)2014年美国声学学会。
Mosquito flight produces a tone as a side effect of wing movement; this tone is also a communication signal that is frequency-modulated during courtship. Recordings of tones produced by tethered flying male and female Aedes aegypti were undertaken using pairs of pressure-gradient microphones above and below, ahead and behind, and to the left and right over a range of distances. Fundamental frequencies were close to those previously reported, although amplitudes were lower. The male fundamental frequency was higher than that of the female and males modulated it over a wider range. Analysis of harmonics shows that the first six partials were nearly always within 1 Hz of integer multiples of the fundamental, even when the fundamental was being modulated. Along the front-back axis, amplitude attenuated as a function of distance raised to the power 2.3. Front and back recordings were out of phase, as were above and below, while left and right were in phase. Recordings from ahead and behind showed quadratic phase coupling, while others did not. Finally, two methods are presented for separating simultaneous flight tones in a single recording and enhancing their frequency resolution. Implications for mosquito behavior are discussed. (C) 2014 Acoustical Society of America.