Multimodal weighting differences by bats and their prey: probing natural selection pressures on sexually selected traits
Multimodal weighting differences by bats and their prey: probing natural selection pressures on sexually selected traits
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蝙蝠及其猎物的多模态权重差异：探讨自然选择对性选择特征的压力
DOI：
10.1016/j.anbehav.2017.10.011
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发表时间：
2017
期刊：
影响因子：
2.5
通讯作者：
Rachel A. Page
中科院分区：
文献类型：
--
作者：
Dylan G. E. Gomes;Dylan G. E. Gomes;Wouter Halfwerk;Wouter Halfwerk;R. C. Taylor;R. C. Taylor;Michael J. Ryan;Michael J. Ryan;Rachel A. Page
蝙蝠捕食者和青蛙猎物对多模态青蛙显示线索的感知不同。捕食性蝙蝠比雌性青蛙更关注雄性青蛙声囊线索。使用多模态显示的青蛙会因窃听蝙蝠而付出代价。自然和性选择压力以不对称的方式塑造性显示。这种不对称选择对多模态信号的进化具有重要意义。多模态通信近年来受到越来越多的关注。虽然人们对预期接收者（例如潜在伴侣）如何响应多模式显示有很多了解，但对于窃听掠食者如何感知和解释这些线索却知之甚少。雄性通加拉蛙（Physalaemus pustulosus）是一种新热带无尾蛙，通过声音叫声和动态膨胀/收缩的声囊来吸引雌性。然而，通加拉蛙的多模式求偶展示也吸引了偷听的捕食者，例如流唇蝙蝠、Trachops cithrosus。我们利用机器人青蛙模型将流唇蝙蝠暴露在多模式的通加拉青蛙求偶展示中。这些模型的呼叫幅度和/或声囊提示的存在各不相同。在一项二选一测试中，我们发现流唇蝙蝠更常攻击高振幅的叫声。此外，将膨胀的声囊提示与较低幅度的青蛙叫声结合起来，增加了蝙蝠攻击这种不太有吸引力的叫声的可能性。先前的研究表明，声带提示不会增加低幅度叫声对雌性 P. pustulosus 的吸引力。因此，虽然通过蝙蝠进行的自然选择和通过雌性青蛙进行的性选择对雄性的性表现施加了反选择的力量，但这些力量的强度并不对称。我们讨论为什么会出现这种情况的可能解释。这项研究强调了了解有意和无意的接收者对信号演化的贡献的重要性，并且有助于解释选择压力如何因感觉方式而异。
HighlightsBat predators and frog prey perceive multimodal frog display cues differently.Predatory bats attend more to male frog vocal sac cues than female frogs do.Frogs that use multimodal displays incur costs from eavesdropping bats.Natural and sexual selection pressures act asymmetrically to shape sexual displays.This asymmetric selection has important implications on multimodal signal evolution.Multimodal communication has received increasing attention in recent years. While much is understood about how intended receivers (such as potential mates) respond to multimodal displays, less is known about how eavesdropping predators perceive and interpret these cues. The male túngara frog, Physalaemus pustulosus, is a neotropical anuran that attracts females with an acoustic call and a dynamically inflating/deflating vocal sac. However, the túngara frog's multimodal courtship display also attracts eavesdropping predators, such as fringe-lipped bats, Trachops cirrhosus. We utilized robotic frog models to expose fringe-lipped bats to multimodal túngara frog courtship displays. The models varied in call amplitude and/or the presence of vocal sac cues. In a two-choice test, we show that fringe-lipped bats more often attack higher-amplitude calls. Additionally, coupling the inflating vocal sac cues to the lower-amplitude frog call increased the probability that a bat would attack this less attractive call. Previous studies have demonstrated that vocal sac cues do not increase the attractiveness of low-amplitude calls to female P. pustulosus. Thus, although natural selection, through the bats, and sexual selection, through the female frogs, exert counter-selection forces on the male's sexual display, the strength of these forces are not symmetrical. We discuss possible explanations for why this might be the case. This study underlines the importance of understanding the contribution of both intended and unintended receivers on signal evolution, and it helps explain how selection pressures might vary across sensory modalities.
DOI：
10.1073/pnas.0406407102
发表时间：
2005-02-15
影响因子：
11.1
作者：
Narins, PM;Grabul, DS;Hödl, W
通讯作者：
Hödl, W