Data from: Bats perceptually weight prey cues across sensory systems when hunting in noise
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Anthropogenic noise can interfere with environmental information processing and thereby reduce survival and reproduction. Receivers of signals and cues in particular depend on perceptual strategies to adjust to noisy conditions. We found that predators that hunt using prey sounds can reduce the negative impact of noise by making use of prey cues conveyed through additional sensory systems. In the presence of masking noise, but not in its absence, frog-eating bats preferred and were faster in attacking a robotic frog emitting multiple sensory cues. The behavioral changes induced by masking noise were accompanied by an increase in active localization through echolocation. Our findings help to reveal how animals can adapt to anthropogenic noise and have implications for the role of sensory ecology in driving species interactions.
人为噪声(anthropogenic noise)会干扰环境信息处理过程,进而降低生物的存活与繁殖成功率。信号与线索的接收者尤其依赖感知策略以适应噪声环境。我们发现,依赖猎物声音进行捕猎的捕食者,可通过利用额外感官系统传递的猎物线索,缓解噪声带来的负面影响。在掩蔽噪声(masking noise)存在而非缺失的情境中,食蛙蝠更倾向于攻击可传递多感官线索的机器蛙,且攻击速度更快。掩蔽噪声诱导的行为变化,伴随有回声定位主动定位行为的增强。本研究结果有助于揭示动物适应人为噪声的机制,同时对感知生态学在驱动物种相互作用中的作用具有启示意义。



