Seismic signal production in a wolf spider: parallel versus serial multi-component signals
Seismic signal production in a wolf spider: parallel versus serial multi-component signals
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DOI：
10.1242/jeb.02104
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发表时间：
2006-03-15
影响因子：
2.8
通讯作者：
Mason, AC
中科院分区：
文献类型：
--
作者：
Elias, DO;Lee, N;Mason, AC
动物信号可以由感觉模态内或跨感觉模态的多个部分组成（多分量信号或多模态信号）。虽然最近的工作集中在多模态信号上，但是多分量信号的产生、处理和演化受到的关注相当少。在这里，使用同步高速视频和激光测振仪记录，然后通过实验操作假定的发声结构，我们探讨了地震信号产生的机制，在求偶显示的Schizocosa stridulans Stratton。观察到两种类型的地震求爱信号：“转速”和“空闲”信号。Revs由男性须肢弯曲产生的高频成分（颤音）和腹部运动产生的低频成分（震颤）组成。该多分量信号由独立的结构产生，并且代表并行的多分量显示。相比之下，空闲显示器由前腿在基底上敲击（敲击）产生的高强度分量组成，随后是由雄性须肢弯曲产生的高频分量（摩擦音）.虽然空闲显示的组件也由独立的结构产生，但腿鼓和触须弯曲连续发生，并且在时间上不重叠。我们讨论了可能驱动多个发声结构演变的选择性压力，以及驱动并行与串行多分量信号演变的选择性压力。
Animal signals can consist of multiple parts within or across sensory modalities ( multi- component signals or multimodal signals). While recent work has focused on multimodal signals, the production, processing and evolution of multi- component signals has received considerably less attention. Here, using synchronous highspeed video and laser vibrometer recordings followed by experimental manipulations of putative sound- producing structures, we explored the mechanisms of seismic signal production in the courtship display of Schizocosa stridulans Stratton. Two types of seismic courtship signals were observed: ` rev' and ` idle' signals. Revs consist of a high- frequency component produced by flexions of the male pedipalp ( stridulation) simultaneous with a low-frequency component produced by movements of the abdomen ( tremulation). This multi- component signal is produced by independent structures and represents a parallel multi- component display. By contrast, idle displays consist of a high- intensity component produced by drumming of the forelegs on the substrate ( percussion) followed by a high- frequency component produced by flexions of the male pedipalp ( stridulation). While the components of the idle display are also produced by independent structures, the leg drumming and palp flexions occur serially and do not overlap in time. We discuss the selective pressures that may drive the evolution of multiple sound- producing structures as well as the selective pressures that drive the evolution of parallel versus serial multi- component signals.