Substrate-Borne Vibrations Induce Behavioral Responses in the Leaf-Dwelling Cerambycid, Paraglenea fortunei
Substrate-Borne Vibrations Induce Behavioral Responses in the Leaf-Dwelling Cerambycid, Paraglenea fortunei
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DOI：
10.2108/zs140029
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发表时间：
2014-12-01
影响因子：
0.9
通讯作者：
Takanashi, Takuma
中科院分区：
文献类型：
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作者：
Tsubaki, Remi;Hosoda, Naoe;Takanashi, Takuma
许多昆虫利用底物产生的振动作为识别配偶或捕食者的信息来源。在各种基质中，植物叶片通常被用来发送和接收振动信息。然而，叶栖昆虫，特别是鞘翅目甲虫对振动的利用知之甚少。我们进行了两个实验来研究叶栖天牛对底物振动的反应。我们记录和分析了4种不同来源的寄主植物叶片的振动：风(0.5m/S)、着陆过程中的甲虫、行走的甲虫和在风中行走的甲虫(0.5m/S)。然后，我们测量了甲虫在水平和垂直基板上行走和休息时的行为阈值，这是诱导行为反应的最低幅度，脉冲振动的范围从20赫兹到1千赫。生物和非生物刺激的振动特性明显不同。甲虫产生的振动(着陆、行走和在风中行走)在接近30赫兹的低频分量中普遍较高，而风力产生的振动在类似30赫兹时显示出主导峰值，此后急剧下降。在四种情况中，甲虫在水平底物上行走时，对75-500赫兹的振动的阈值最低，这是甲虫产生的振动的特征。由于在寄主植物的水平叶表面上发现了灵芝甲虫，通过水平底物传递的振动可能会在行走的甲虫中诱导强烈的冻结反应，以检测同种或异种。我们的发现提供了证据，证明叶栖甲虫可以通过振动特征的差异来区分生物和非生物因素。
Many insects utilize substrate-borne vibrations as a source of information for recognizing mates or predators. Among various substrates, plant leaves are commonly used for transmitting and receiving vibrational information. However, little is known about the utilization of vibrations by leaf-dwelling insects, especially coleopteran beetles. We conducted two experiments to examine the response of the leaf-dwelling cerambycid beetle, Paraglenea fortunei, to substrate-borne vibrations. We recorded and analyzed vibrations of host plant leaves from four different sources: wind (0.5 m/s), a beetle during landing, a walking beetle, and a beetle walking in the wind (0.5 m/s). We then measured the behavioral thresholds, the lowest amplitudes that induce behavioral responses, from beetles walking and resting on horizontal and vertical substrates with pulsed vibrations ranging from 20 Hz to 1 kHz. The vibrational characteristics of biotic and abiotic stimuli clearly differed. Beetle-generated vibrations (landing, walking, and walking in the wind) were broadly high in the low-frequency components above similar to 30 Hz, while wind-generated vibrations showed a dominant peak at similar to 30 Hz and a steep decrease thereafter. Among four situations, beetles walking on horizontal substrates showed lowest thresholds to vibrations of 75-500 Hz, which are characteristic of beetle-generated vibrations. Given that P. fortunei beetles are found on horizontal leaf surfaces of the host plant, vibrations transmitted though horizontal substrates may induce a strong freeze response in walking beetles to detect conspecifics or heterospecifics. Our findings provide evidence that leaf-dwelling beetles can discriminate among biotic and abiotic factors via differences in vibrational characteristics.