Cerrillo-Mancilla León L, Cano-Ramírez Claudia, Zúñiga Gerardo
Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n. Col. Sto. Tomás, Ciudad de México 11340, México.
Insects. 2024 Jul 18;15(7):542. doi: 10.3390/insects15070542.
The acoustic communication system (ACS) in bark beetles has been studied mainly in species of the genera , and . Specifically, ACS of the roundheaded pine beetle, , has been little studied. In this study, we described the stridulatory apparatus of this beetle using optical and scanning electron microscopy and recorded the call types produced by males in three behavioral contexts: stress, female-male-, and male-male interactions. From the spectrograms and waveforms, call types, as well as temporal (tooth strike, tooth strike rate, and intertooth strike interval) and spectral features (minimum, maximum and dominant frequency), were determined. Males have a functional elytro-tergal stridulatory apparatus-females do not-consisting of a file for the pars stridens and two lobes for the plectrum. Most of spectro-temporal features were statistically different between single- and multi-noted calls and across the three behavioral contexts. In the male-male interaction, a new type of call named "withdrawal" was produced by the male withdrawing or fleeing. Our results suggest that the spectro-temporal features of single- and multiple-noted calls in the three behavioral conditions are specific and different from each other. Yet, the combination of single and multiple calls determines an overall calling pattern characteristic of the tested behaviors and, therefore, is species-specific.
小蠹虫的声学通讯系统（ACS）主要是在 、 和 属的物种中进行研究的。具体而言，对圆头松材小蠹 的ACS研究较少。在本研究中，我们使用光学显微镜和扫描电子显微镜描述了这种小蠹虫的摩擦发声器官，并记录了雄性在三种行为情境下发出的叫声类型：应激、雌雄互动和雄雄互动。通过频谱图和波形图，确定了叫声类型以及时间特征（齿击、齿击率和齿击间隔）和频谱特征（最小、最大和主频）。雄性具有功能性的鞘翅 - 背板摩擦发声器官，而雌性没有，该器官由用于发声区的音锉和用于拨片的两个叶组成。大多数频谱 - 时间特征在单音和多音叫声之间以及三种行为情境之间存在统计学差异。在雄雄互动中，雄性撤退或逃跑时会发出一种名为“撤退”的新型叫声。我们的结果表明，在三种行为条件下，单音和多音叫声的频谱 - 时间特征是特定的，且彼此不同。然而，单音和多音叫声的组合决定了测试行为所特有的整体叫声模式，因此具有物种特异性。
