有证据表明,野生的声音签名和声音印记在野生身上
Simeon Q Smeele1,2,3, Juan Carlos Senar4, Lucy M Aplin1,5,6
1Cognitive and Cultural Ecology Research Group, Max Planck Institute of Animal Behavior, Radolfzell, Germany.
Royal Society open science
|October 6, 2023
概括
的发声包含个别的签名,类似于人类的声音印记. 僧侣在多种呼叫类型中表现出明显的声音特征,使得同类型的识别成为可能.
科学领域:
- 动物行为 动物行为
- 生物声学是一种生物声学.
- 鸟类通信 鸟类通信
背景情况:
- 声调在社会互动和物种间的个体识别中起着至关重要的作用.
- 虽然接触呼叫的个体特征已知,但其他呼叫类型中存在类似的签名以及交叉呼叫语音印记的存在在很大程度上仍未被探索.
研究的目的:
- 为了研究僧侣 (Myiopsitta monachus) 的多种呼叫类型中个别声学特征的存在和稳定性.
- 为了确定僧侣是否拥有跨越不同发声类型的"语音印记",从而促进同种类的识别.
主要方法:
- 在两年内记录的229只单独标记的僧侣的5599个发音的声学分析.
- 检查五种不同的呼叫类型,以评估个别的独特性和签名稳定性.
- 区分函数分析的应用,以测试交叉呼叫身份识别.
主要成果:
- 在五种检查的呼叫类型中,有三种类型中发现了个别语音特征的证据.
- 虽然的接触呼叫是个别不同的,但在较短的时间尺度上,它们的变化率高于以前的假设.
- 一个辨别函数成功地预测了不同类型的呼叫中呼叫者的身份,支持交叉呼叫语音印记的存在.
结论:
- 僧侣在多种呼叫类型中拥有单独的声学特征,这有助于它们的社会识别系统.
- 这项研究提供了的声音"声音印记"的证据,允许在各种声调中进行个体识别.
- 这些发现表明,修士可以使用语音线索识别同类动物,即使呼叫类型不同,而不需要明确的身份信号.
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