幼虫通过基于时间差异的机制定位远距离的猎物
Vanessa Martinez1,2, David Sillam-Dussès1, Dušan Devetak3
1Université Sorbonne Paris Nord, Laboratoire d'Ethologie Expérimentale et Comparée, LEEC, UR 4443, 93430, Villetaneuse, France.
概括
使用振动的时间,类似于动物的听力,来找到猎物. 最初的声音波对于它们的猎物定位至关重要,比声音更重要.
科学领域:
- 动物行为 动物行为
- 生物声学是一种生物声学.
- 昆虫感官生态 昆虫感官生态
背景情况:
- 挖坑狮子 (Euroleon nostras) 是捕食者,它们依赖于检测猎物的振动.
- 了解它们用于猎物定位的感觉机制是它们生态成功的关键.
研究的目的:
- 为了研究羊能够定位人工振动线索的能力.
- 为了确定用于猎物检测的振动信号的特定特征.
主要方法:
- 被暴露在由压电传感器产生的人造振动脉冲中.
- 振动通过沙子传输,模拟自然猎物的运动.
- 记录和分析与振动特征相关的Antlion响应 (抛砂).
主要成果:
- 鱼对结构化的波浪阵线做出了反应,将抛砂的方向与传播方向相反.
- 随机结构的波浪阵线引起了较弱,更分散的抛砂反应.
- 振动信号的发作对定位更为重要,而不是耳间相差.
结论:
- 鱼猎物定位依赖于时间线索,类似于听觉系统中的声声间时间差异.
- 最初的波浪前线是子检测和朝着猎物振动方向的能力的一个关键因素.
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