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Color lures in orb-weaving spiders: a meta-analysis
Behavioral Ecology ( IF 2.5 ) Pub Date : 2020-01-21 , DOI: 10.1093/beheco/arz210
Nathalia G Ximenes 1, 2 , Vinicius De Souza Moraes 2, 3 , Jean C G Ortega 2 , Felipe M Gawryszewski 1
Affiliation  

Lures are deceptive strategies that exploit sensory biases in prey, usually mimicking a prey’s mate or food item. Several predators exploit plant–pollinator systems, where visual signals are an essential part of interspecific interactions. Many diurnal, and even nocturnal, orb-web spiders present conspicuous body coloration or bright color patches. These bright colors are regarded as color-based lures that exploit biases present in insect visual systems, possibly mimicking flower colors. The prey attraction hypothesis was proposed more than 20 years ago to explain orb-web spider coloration. Although most data gathered so far has corroborated the predictions of the prey attraction hypothesis, there are several studies that refute these predictions. We conducted a multilevel phylogenetic meta-analysis to assess the magnitude of the effect of conspicuous orb-web spider body coloration on prey attraction. We found a positive effect in favor of the prey attraction hypothesis; however, there was substantial heterogeneity between studies. Experimental designs comparing conspicuous spiders to painted spiders or empty webs did not explain between-studies heterogeneity. The lack of theoretical explanation behind the prey attraction hypothesis makes it challenging to address which components influence prey attraction. Future studies could evaluate whether color is part of a multicomponent signal and test alternative hypotheses for the evolution of spider colors, such as predator avoidance and thermoregulation.

中文翻译:

织球蜘蛛的色诱:荟萃分析

诱剂是利用猎物的感觉偏差的欺骗性策略,通常模仿猎物的伴侣或食物。一些掠食者利用植物-授粉系统,其中视觉信号是种间相互作用的重要组成部分。许多昼夜甚至是夜间的网状蜘蛛都呈现出明显的身体色泽或明亮的色斑。这些明亮的颜色被认为是基于颜色的诱饵,可利用昆虫视觉系统中存在的偏差来模仿花的颜色。早在20多年前就提出了猎物吸引假说来解释球网蜘蛛的着色。尽管到目前为止收集的大多数数据证实了对猎物吸引力假说的预测,但仍有一些研究驳斥了这些预测。我们进行了多层次的系统进化荟萃分析,以评估明显的球网蜘蛛体着色对猎物吸引力的影响程度。我们发现有利于猎物吸引假说的积极作用。但是,研究之间存在很大的异质性。比较显眼蜘蛛和彩绘蜘蛛或空网的实验设计无法解释研究之间的异质性。猎物吸引假说背后缺乏理论解释,这使得解决哪些因素影响猎物吸引具有挑战性。未来的研究可能会评估颜色是否是多分量信号的一部分,并测试蜘蛛颜色演变的替代假设,例如避免捕食和调节温度。我们发现有利于猎物吸引假说的积极作用。但是,研究之间存在很大的异质性。比较显眼蜘蛛和彩绘蜘蛛或空网的实验设计无法解释研究之间的异质性。猎物吸引假说背后缺乏理论解释,这使得解决哪些因素影响猎物吸引具有挑战性。未来的研究可能会评估颜色是否是多分量信号的一部分,并测试蜘蛛颜色演变的替代假设,例如避免捕食和调节温度。我们发现有利于猎物吸引假说的积极作用。但是,研究之间存在很大的异质性。比较显眼蜘蛛和彩绘蜘蛛或空网的实验设计无法解释研究之间的异质性。猎物吸引假说背后缺乏理论解释,这使得解决哪些因素影响猎物吸引具有挑战性。未来的研究可能会评估颜色是否是多分量信号的一部分,并测试蜘蛛颜色演变的替代假设,例如避免捕食和调节温度。猎物吸引假说背后缺乏理论解释,这使得解决哪些因素影响猎物吸引具有挑战性。未来的研究可能会评估颜色是否是多分量信号的一部分,并测试蜘蛛颜色演变的替代假设,例如避免捕食和调节温度。猎物吸引假说背后缺乏理论解释,这使得解决哪些因素影响猎物吸引具有挑战性。未来的研究可能会评估颜色是否是多分量信号的一部分,并测试蜘蛛颜色演变的替代假设,例如避免捕食和调节温度。
更新日期:2020-03-28
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