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企感知到与来源和过器相关的声音参数的变化,以及特定物种的声音变化
Francesca Terranova1, Luigi Baciadonna2, Chiara Maccarone1
1Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.
Animal cognition
|July 4, 2023
概括
非洲企可以感知其发声的变化,特别是基本频率 (F0) 和形式. 这表明这些声学线索对于该物种的个体识别至关重要.
科学领域:
- 生物声学是一种生物声学.
- 动物沟通动物沟通
- 行为生态学 行为生态学
背景情况:
- 动物的发声传达了重要信息,包括身份,年龄,性别和社会地位.
- 已知声学线索,如基本频率 (F0) 和形式,在非洲企 (Spheniscus demersus) 中编码个人身份.
- 接收器利用这些声学变异进行个体识别的感知能力在企中仍然在很大程度上未经测试.
研究的目的:
- 用实验来测试非洲企是否能够感知并响应同种类呼叫的F0和形式分散 (ΔF) 的变化.
- 调查F0和形成剂作为非洲企个人歧视的潜在线索的作用.
主要方法:
- 采用习惯-失习 (HD) 范式来评估对操纵语音的行为反应.
- 对F0和ΔF ±20%的变化进行了测试,反映了自然的个体间变化.
- 监控行为反应,特别是对声源的时间和延迟.
主要成果:
- 企表现出显著增加的寻找行为 (更快和更长的持续时间),当调用操纵F0和形式的电话被呈现.
- 这表明企可以在声音信号中感知区分这些关键声学参数的变化.
- 这项研究提供了第一个关于非洲企对F0和形成变异的感知敏感性的实验证据.
结论:
- 非洲企表现出能够感知基本频率和发声形式的变化的能力.
- 这些声学参数作为个人识别和同类之间歧视的关键线索.
- 研究结果支持F0和形成剂在调解社会互动和维持非洲企个体身份识别方面的作用.
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