船的噪音阻碍了野生平鱼和海员鱼的发声
Shaye Dana-Lynn Ogurek1, William D Halliday2, Mackenzie B Woods1
1Department of Biology, University of Victoria, Victoria, BC, Canada.
Marine pollution bulletin
|May 4, 2024
概括
船舶噪音会破坏平鱼的通信,减少呼叫发生和改变呼叫频率. 这会影响鱼类的行为,并可能影响杂的海洋环境中人口的健康.
科学领域:
- 海洋生物学 海洋生物学
- 生物声学是一种生物声学.
- 动物行为 动物行为
背景情况:
- 海洋噪音污染对水生动物构成越来越大的威胁.
- 平鱼中士鱼依赖于声声来进行繁殖和社会互动.
- 了解人为噪音对鱼类交流的影响对于保护至关重要.
研究的目的:
- 为了研究船只噪音对平海军中士鱼的发声的影响.
- 分析因船只噪音而导致的呼叫存在,峰值频率和持续时间的变化.
- 评估噪声强度 (大声与安静) 是否会对鱼类发声产生不同的影响.
主要方法:
- 现场声学录音被用来监控普通的中尉电话.
- 在船只噪音的存在和不存在下,分析了发声.
- 测量了不同类型的通话的特定声学参数 (存在,峰值频率,持续时间).
主要成果:
- 船舶噪音显著减少了所有三种类型的普通中尉呼叫 (声,声,声) 的发生.
- 在船只噪音的存在下,声和声的峰值频率升高.
- 无论是大声的船声还是安静的船声,都对鱼类的发声产生了类似的影响.
结论:
- 人造船噪音干扰了普通中尉的基本通信信号.
- 改变语音可能导致不适应性行为和减少生殖成功.
- 这些发现强调了减轻海洋噪音的必要性,以保护海洋鱼群.
相关概念视频
01:06Fixed Action Patterns
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
00:53Sound Waves: Interference
Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...