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Searching for the Audience of the Weeping Lizard's Distress Call

机译：寻找哭泣的蜥蜴遇险电话的听众

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摘要

The evolution and functions of avian and mammalian antipredator calls are well understood, which contrasts with a lack of progress in reptiles. Here, we present the first investigation of the functions of a distress call in a lizard. We studied Liolaemus chiliensis, which emits a short and complex high-pitched scream when it is subdued. We determined the behavioral responses of two potential targets to these calls, conspecifics, and a snake predator. Additionally, we tested whether the chemical environment (presence of chemical scents from conspecifics) modulates the lizards' responses to calls. Both the conspecifics and the predator responded to the distress calls, which triggered a longer period of immobility in the lizards and a reduction in exploratory behavior in the snake, as compared to a white noise. In addition, the lizards in the arena with scents of conspecifics responded to distress calls and noise with more movements and escape attempts. These results suggest that distress calls may enhance the survival of L.chiliensis individuals.
机译：鸟类和哺乳动物反捕食者的进化和功能已广为人知，这与爬行动物缺乏进展形成鲜明对比。在这里，我们介绍了蜥蜴遇险呼叫功能的首次调查。我们研究了Liolaemus chiliensis，它在受到抑制时会发出短而复杂的高音调尖叫。我们确定了两个潜在目标对这些呼唤的行为响应，同种异体和蛇掠食者。此外，我们测试了化学环境（存在于特定物种中的化学气味）是否会调节蜥蜴对呼唤的反应。与白噪声相比，物种和捕食者都响应了求救信号，这触发了蜥蜴的长时间不活动和蛇的探索行为的减少。此外，竞技场中的蜥蜴带有特定物种的气味，通过更多的移动和逃逸尝试来响应遇险呼叫和噪音。这些结果表明，遇险呼叫可能会提高L.chiliensis个体的生存。

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