Equivalent effect of UV coloration and vibratory signal on mating success in a jumping spider.
Equivalent effect of UV coloration and vibratory signal on mating success in a jumping spider.
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紫外线着色和振动信号对跳蛛交配成功的同等影响。
DOI：
10.1093/beheco/ary167
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Li D
中科院分区：
文献类型：
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作者：
Hu Z.;Wee S.E.E;Painting C.J.;Zhang S.C.;Li D
紫外线（UV;波长：280-400 nm）着色已经显示为重要的视觉信号，但是以前没有结合其它信号（例如振动信号）进行研究。在这里，我们研究了多模态信号功能的视觉和基板传播的振动方式的UV-荧光跳跃spiderCosmopolyumbratica，其中的重要性，在求偶显示器中的UV着色已被证明。我们首先描述了求偶雄性产生的振动信号。我们发现，虽然振动信号主要包括触击和腹部重击，腹部重击的幅度显示出很高的方差和体重呈正相关。这表明，腹部重击作为一种振动成分可能是条件依赖性的。为了检验振动和紫外线信号是否在可变环境中相互备份（基于功效的备份假设），我们使用了完全交叉的2 × 2交配试验，一种信号隔离方法，以研究隔离和组合信号如何影响雌性的交配选择。我们的结果表明，单独或组合的两种信号导致相似的雌性反应（即，交配成功率、交配潜伏期、雌性注意力比率）。振动和UV信号的存在影响接合频率，当振动和UV信号单独或组合呈现时，接合频率没有显著差异。这些结果支持基于疗效的备份假设。因此，我们得出结论，振动和紫外线信号在预测交配成功在C。阴影。
Ultraviolet (UV; wavelengths: 280–400 nm) coloration has been shown to be an important visual signal but has not been studied in conjunction with other signals such as vibratory signals previously. Here, we investigated multimodal signaling function in the visual and substrate-borne vibratory modalities of the UV-ornamented jumping spiderCosmophasis umbratica, in which the importance of UV coloration in courtship displays has been demonstrated. We first described vibratory signals produced by courting males. We found that while vibratory signals mainly consist of palp drumming and abdomen thump, amplitude of abdomen thump shows a high variance and is positively correlated with body mass. This suggests that abdomen thump as a vibratory component may be condition-dependent. To examine whether the vibratory and UV signal function as backup to each other in a variable environment (efficacy-based backup hypothesis), we used a fully crossed 2 × 2 mating assay, a signal-isolation approach, to investigate how isolated and combined signals affect mate choice by females. Our results showed that both signals in isolation or in combination result in similar female responses (i.e., mating success, latency to copulation, female attention ratio). The presence of both vibratory and UV signals affects mating frequency, with no significant differences in mating frequency when vibratory and UV signals are presented in isolation or in combination. These results support the efficacy-based backup hypothesis. We therefore conclude that vibratory and UV signals have equivalent effects in predicting mating success inC. umbratica.