Exploring a novel substrate‐borne vibratory signal in the wolf spider Schizocosa floridana
Exploring a novel substrate‐borne vibratory signal in the wolf spider Schizocosa floridana
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探索佛罗里达裂殖狼蛛中一种新型底物传播的振动信号
DOI：
10.1111/eth.13114
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发表时间：
2020
期刊：
影响因子：
1.7
通讯作者：
Herberstein, ed., Marie Elisabeth
中科院分区：
文献类型：
--
作者：
Rosenthal, Malcolm F.;Hebets, Eileen A.;McGinley, Rowan;Raiza, Cody;Starrett, James;Yan, Lin;Elias, Damian O.;Herberstein, ed., Marie Elisabeth
动物通过各种各样的身体结构产生的信号进行交流。确定信号是如何产生的提供了对信号演变的关键见解。在这里，我们研究了一个复杂的振动交配显示由maleSchizocosa floridanawolf蜘蛛。该显示器包含三个分立的基片承载的声学组件（称为“重击声”、“敲击声”和“啁啾声”），每个组件都与不同身体部位（分别为足须、腿和腹部）的运动相关联。为了确定生产方法，我们采用了高速视频/音频记录和可能的发声结构的SEM成像的组合。先前的研究表明，“啁啾”成分是音调，这是一种可能在该属中独特的信号特征。我们测量信号音调的所有求偶组件，以及求偶组件从16 otherSchizocosawolf蜘蛛。我们的结果表明S. floridana通过共同的（须鸣和前腿敲击）和新颖的（腹部运动）声音产生机制的组合来产生求爱歌曲。特别令人感兴趣的是，“啁啾”，这是使用一种新的腹部生产机制，是唯一已知的音调信号与声学特性是独一无二的属内。我们认为，一种新的声音产生机制的潜在演变开辟了一个新的轴信号特征空间在这个物种中，这个信号是如何运作和进化的重要影响。
Animals communicate using a diversity of signals produced by a wide array of physical structures. Determining how a signal is produced provides key insights into signal evolution. Here, we examine a complex vibratory mating display produced by maleSchizocosa floridanawolf spiders. This display contains three discrete substrate‐borne acoustic components (known as “thumps”, “taps”, and “chirps”), each of which is anecdotally associated with the movement of a different body part (the pedipalps, legs, and abdomen respectively). In order to determine the method of production, we employ a combination of high‐speed video/audio recordings and SEM imaging of possible sound‐producing structures. Previous work has suggested that the “chirp” component is tonal, a signal trait that would be potentially unique in the genus. We measured signal tonality for all courtship components, as well as for courtship components from sixteen otherSchizocosawolf spiders. Our results suggest thatS. floridanaproduces courtship song using a combination of shared (palpal stridulation and foreleg percussion) and novel (abdominal movement) sound production mechanisms. Of particular interest, the “chirp”, which is produced using a novel abdominal production mechanism, is the only known tonal signal with acoustic properties that are unique within the genus. We argue that the potential evolution of a novel sound production mechanism has opened up a new axis of signaling trait space in this species, with important implications for how this signal is likely to function and evolve.