Other Species' Alarm Calls Evoke a Predator-Specific Search Image in Birds
Other Species' Alarm Calls Evoke a Predator-Specific Search Image in Birds
复制标题
DOI：
10.1016/j.cub.2020.04.062
复制
发表时间：
2020-07-06
期刊：
影响因子：
9.2
通讯作者：
Suzuki, Toshitaka N.
中科院分区：
文献类型：
--
作者：
Suzuki, Toshitaka N.
许多动物在发现捕食者时会发出声音警报信号，而共享捕食者的异种物种经常会偷听并回应这些呼叫[1]。尽管种间窃听在动物中广泛存在，但其潜在的认知过程仍有待阐明。如果报警电话，像人类的参考词，表示一个特定的捕食者类型（例如，“蛇！”），那么接收者可能会在听到这些呼叫时检索捕食者的心理图像[2-4]。在这里，使用最近开发的实验范例[5]，我测试是否异种警报呼叫唤起捕食者特定的视觉搜索图像在野生鸟类。在播放日本山雀（Parus minor）发出的特定于蛇的警报叫声时，煤山雀（Periparus ater）接近一根以蛇的方式移动的木棍。然而，煤山雀在听到其他类型的叫声时不会接近同一根棍子，或者棍子的运动与蛇的运动不同。因此，日本山雀蛇警报导致煤山雀特别加强对蛇状物体的视觉注意。这些结果提供了实验证据唤起的视觉搜索图像的异种报警电话，强调跨模态信息的重要性，在种间窃听。
Many animals produce vocal alarm signals when they detect a predator, and heterospecific species sharing predators often eavesdrop on and respond to these calls [1]. Despite the widespread occurrence of interspecific eavesdropping in animals, its underlying cognitive process remains to be elucidated. If alarm calls, like human referential words, denote a specific predator type (e.g., "snake!''), then receivers may retrieve a mental image of the predator when hearing these calls [2-4]. Here, using a recently developed experimental paradigm [5], I test whether heterospecific alarm calls evoke a predator-specific visual search image in wild birds. During playback of snake-specific alarm calls produced by Japanese tits (Parus minor), coal tits (Periparus ater) approach a wooden stick being moved in a snake-like manner. However, coal tits do not approach the same stick when hearing other call types or if the stick's movement is dissimilar to that of a snake. Thus, Japanese tit snake alarms cause coal tits to specifically enhance visual attention to snakelike objects. These results provide experimental evidence for the evocation of visual search images by heterospecific alarm calls, highlighting the importance of integrating cross-modal information in interspecific eavesdropping.