Transmission and perception of acoustic signals in the desert clicker,Ligurotettix coquilletti (Orthoptera: Acrididae)
Transmission and perception of acoustic signals in the desert clicker,Ligurotettix coquilletti (Orthoptera: Acrididae)
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沙漠响尾蛇中声音信号的传输和感知，Ligurotettix coquilletti（直翅目：Acrididae）
DOI：
10.1007/bf01051500
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发表时间：
1993
影响因子：
1
通讯作者：
T. Shelly
中科院分区：
文献类型：
--
作者：
W. Bailey;Michael D Greenfield;T. Shelly
在美国西南部的沙漠栖息地，雄性荒漠蝗虫Liguroettix coquilletti(蝗科：直翅目)保卫一种雌性稀有资源--三齿杂色油树。雄性相互发出声音信号，也向寻找雌性发出信号。这种叫声是由被盖/股动脉发出的，其中一条或两条腿用来发声。横向测量的声压级会受到位于颤动的腿和麦克风之间的夹板的影响。两侧测量的声压级差异最大可达7分贝。当产生多次点击时，这些多次点击可能比单次点击大4分贝。我们通过监测颈部腹侧神经索的声学上升神经元来检查这种叫声的结构和单身男性的有效传播区。通过将神经生理学准备带入野外，我们能够绘制出孤立雄性的广播区域，也能够绘制雄性在聚集中呼唤的区域。在8-14米的距离内可以检测到孤立的雄鸟的信号，而在4-6米的范围内可以检测到群聚的雄鸟的叫声的神经表示。歌声的频谱虽然有大约10 kHz的主要低频成分，但在超声波范围内具有广泛的功率。上升听神经元的调谐特征与雄性叫声的整体结构相匹配。与视觉线索相比，声音线索在女性吸引方面的重要性也得到了讨论。
Males of the desert clicker, Ligurotettix coquilletti (Acrididae: Orthoptera) defend a femalerequired resource, the creosote bush Larrea tridentata, in desert habitats of the southwestern United States. Males signal acoustically to each other as well as to searching females. The call is produced by tegminal/femoral stridulation where one or both legs are used for sound production. Sound pressure levels, measured laterally, are influenced by the intervening tegmen between the stridulating leg and the microphone. Differences in measured sound pressure levels between sides can vary up to 7 dB. When clicks are produced multiply,these multiple clicks may be 4 dB louder than single clicks. We examine the structure of the call and the effective broadcast area of single males by monitoring acoustic ascending neurons of the ventral nerve cord in the neck. By taking the neurophysiological preparation into the field, we were able to map the broadcast area of isolated males and also of males calling within aggregations. The distance over which the signal of isolated males could be detected was 8–14 m, whereas neural representation of the calls of males within aggregation were detectable within 4–6 m. The sound spectrum of the song, although having a major lower-frequency component around 10 kHz, has extensive power in the ultrasonic range. The tuning characteristics of the ascending auditory neuron matched the overall structure of the male call. The importance of the acoustic cue, as compared to visual cues, is discussed in relation to female attraction.