在被囚禁的黑帽中,在殖民地聚集后,个体的声音身份可能会变得模糊
Sarah M L Smeltz1, Moriah J Deimeke1, Prateek K Sahu1
1Department of Psychology, University of Alberta, 11455 Saskatchewan Drive, Edmonton, AB T6G 2E9, Canada.
Behavioural processes
|January 29, 2025
概括
黑帽可以区分单个呼叫,但不能区分殖民地方言. 集群组装后的声乐可塑性阻碍了个别呼叫的识别,这表明群体和个体身份信息是相关的.
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:
- 黑帽 (Poecile atricapillus) 在一生中表现出声乐可塑性,这对于开发特定人口方言至关重要.
- 声调的融合,即群体成员的呼叫变得相似,在野生和集体养的鸟类中塑造了这些方言.
- 之前的研究观察到群体中的声音融合,但在单独居住的殖民地中存在不同的方言是未知的.
研究的目的:
- 为了调查是否个别安置的实验室小殖民地发展出独特的声音方言.
- 为了确定黑帽是否可以区分殖民地特定的呼叫.
- 评估殖民地组装后的声乐可塑性是否会影响呼叫歧视.
主要方法:
- 来自两个殖民地房间的六只单独安置的被转移到一个新的实验室.
- 为了跟踪变化,在八周内每周记录一次发音.
- 一个操作者调节的Go/No-go任务测试了组装前殖民地调用和组装后调用之间的歧视.
主要成果:
- 在组装前的单个呼叫之间有区别,但不是在基于殖民地的呼叫之间.
- 在组装后的呼叫中,区分精度下降,这表明声乐可塑性的感知.
- 将学习推广到新鸟类的新型预组合呼叫并没有成功.
结论:
- 单独居住的殖民地似乎没有发展出其他可以检测到的独特的声音方言.
- 可以感知殖民地组装后的声音变化,这表明发生了可塑性.
- 组合后的声乐可塑性可能会阻碍个人歧视,这意味着群体和个人声乐身份之间存在联系.
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