相关实验视频
Updated: May 31, 2025

14:58
Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
Published on: April 6, 2019
7.6K
在回声定位蝙蝠中,快速跟踪逃跑的猎物的语音运动
Ilias Foskolos1,2, Antoniya Hubancheva3,4, Marie Rosenkjær Skalshøi3
1Department of Biology, Section of Zoophysiology, Aarhus University, Aarhus, 8000, Denmark. ilias.foskolos@bio.au.dk.
BMC biology
|January 24, 2025
概括
呼声定位蝙蝠动态调整他们的呼声来追踪逃避的猎物. 这种快速的声动反循环增强了它们的狩猎成功,展示了蝙蝠复杂的感觉运动能力.
科学领域:
- 动物行为 动物行为
- 感官生态学 感官生态学
- 生物声学是一种生物声学.
背景情况:
- 蝙蝠与昆虫猎物进行进化军备竞赛,昆虫猎物能够检测和逃避蝙蝠的呼叫.
- 高接近速度和有限的生物声波范围给蝙蝠在捕捉猎物方面带来了挑战.
- 这项研究调查了蝙蝠的感觉运动系统是否能够在紧张的时间限制内快速追踪逃跑的猎物.
研究的目的:
- 为了测试回声定位蝙蝠使用反应性感官运动操作,排除追踪逃跑的猎物的假设.
- 为了研究蝙蝠在捕获猎物时的声音和运动反应.
- 为了确定蝙蝠是否可以实时调整其回声定位呼叫以追踪逃避机动.
主要方法:
- 使用高分辨率的生物标签记录野生大鼠耳型蝙蝠 (Myotis myotis) 狩猎空中猎物.
- 从实验室环境中训练有素的蝙蝠收集的数据,这些蝙蝠暴露于不同速度和距离的模拟猎物逃跑.
- 分析了蝙蝠在狩猎期间的发声和飞行模式,并模拟了逃生场景.
主要成果:
- 野生蝙蝠在狩猎期间表现出灵活的声持续时间.
- 实验室实验表明,目标速度和运动距离影响了蝙蝠声的持续时间,更快/更长的运动会引起更长的声.
- 蝙蝠表现出敏的语音运动跟踪,调整呼叫间隔在240毫秒内逃离猎物的机动.
结论:
- 呼声定位蝙蝠拥有快速的声动反循环,使他们能够追踪逃避的猎物.
- 这种回声引导的感觉调整扩大了蝙蝠的有效声学范围.
- 这些发现凸显了蝙蝠作为食昆虫的顶级捕食者的复杂狩猎能力.
相关概念视频
Convergent Evolution
27.4K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
27.4K
Echo
486
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
486

