Sound detection by the longfin squid (Loligo pealeii) studied with auditory evoked potentials: sensitivity to low-frequency particle motion and not pressure
Sound detection by the longfin squid (Loligo pealeii) studied with auditory evoked potentials: sensitivity to low-frequency particle motion and not pressure
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DOI：
10.1242/jeb.048348
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发表时间：
2010-11-01
影响因子：
2.8
通讯作者：
Nachtigall, Paul E.
中科院分区：
文献类型：
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作者：
Mooney, T. Aran;Hanlon, Roger T.;Nachtigall, Paul E.
虽然许多水下物种都有听觉，但关于头足类动物是否以及如何探测声音还有很多争论。在这里，我们量化的声学敏感性的长鳍鱿鱼（Loligo pealeii）使用近场声学和振动器产生的加速度刺激。声场压力和质点运动分量从30到10，000测量。Hz和加速度刺激测量从20到1000。Hz.使用听觉诱发电位（AEPs）与电极放置在平衡囊附近的反应。诱发电位由两种刺激产生，并由两种波型组成：（1）快速刺激后波，和（2）慢，高振幅波，类似于一些鱼类AEP。得到的回答在30到500之间。Hz，最低阈值在100到200之间。Hz.在最佳频率下，AEP振幅通常> 20。如果（1）水温低于8 ℃，（2）平衡囊被消融，或（3）记录电极放置在平衡囊附近以外的位置，则在所有频率下诱发电位都消失。AEP响应特性和响应范围都表明鱿鱼检测声音类似于大多数鱼，平衡囊作为加速度计，鱿鱼通过它检测声场的粒子运动分量。的模态和频率范围表明，鱿鱼可能检测到声粒子运动刺激的捕食者和猎物，以及低频环境的声音签名，可能有助于导航。
Although hearing has been described for many underwater species, there is much debate regarding if and how cephalopods detect sound. Here we quantify the acoustic sensitivity of the longfin squid (Loligo pealeii) using near-field acoustic and shaker-generated acceleration stimuli. Sound field pressure and particle motion components were measured from 30 to 10,000. Hz and acceleration stimuli were measured from 20 to 1000. Hz. Responses were determined using auditory evoked potentials (AEPs) with electrodes placed near the statocysts. Evoked potentials were generated by both stimuli and consisted of two wave types: (1) rapid stimulus-following waves, and (2) slower, high-amplitude waves, similar to some fish AEPs. Responses were obtained between 30 and 500. Hz with lowest thresholds between 100 and 200. Hz. At the best frequencies, AEP amplitudes were often > 20. V. Evoked potentials were extinguished at all frequencies if (1) water temperatures were less than 8 C, (2) statocysts were ablated, or (3) recording electrodes were placed in locations other than near the statocysts. Both the AEP response characteristics and the range of responses suggest that squid detect sound similarly to most fish, with the statocyst acting as an accelerometer through which squid detect the particle motion component of a sound field. The modality and frequency range indicate that squid probably detect acoustic particle motion stimuli from both predators and prey as well as low-frequency environmental sound signatures that may aid navigation.