在东方彩 (Chrysemys picta picta) 中,依赖频率的临时值转移
Andria K Salas1, Alyssa M Capuano1, Craig A Harms2
1Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA.
The Journal of the Acoustical Society of America
|May 14, 2024
概括
水下噪音污染会导致油漆的暂时值转移 (TTS),影响它们的听力. 这些转变表明听力损失,发生在较高频率的较低音量水平,表明特定物种的脆弱性.
科学领域:
- 海洋生物学 海洋生物学
- 声学生态学 声学生态学
- 野生动物保护 野生动物保护
背景情况:
- 海对环境变化很脆弱,包括水下噪音污染.
- 由于噪音造成的听力障碍会扰乱的关键声学通信和环境检测.
- 了解噪音引起的听力损失对于保护受威胁的乌种群至关重要.
研究的目的:
- 为了确定导致东方彩 (Chrysemys picta picta) 听力暂时值转移 (TTS) 的条件.
- 评估不同噪声持续时间和振幅对海听觉敏感度的影响.
- 为了比较不同频率 (400 Hz和600 Hz) 的听觉反应.
主要方法:
- 三只东方彩被暴露在带限连续白噪声 (501000 Hz) 中.
- 暴露于声音的水平在151至171dBre1μPa2秒之间.
- 听觉唤起的潜在方法被用来测量在400赫兹和600赫兹的噪音暴露之前和之后的听力值.
主要成果:
- 所有的海都在400Hz和600Hz两种频率上都表现出TTS,其转移范围从6.1到41.4dB.
- 观察到600赫兹的频率,听觉灵敏度更高的频率,与400赫兹相比,听觉转移更大.
- 在600Hz时,TTS发作发生在154dB对1μPa2s,在400Hz时发生在158dB对1μPa2s.
结论:
- 水下噪音污染显然会导致东部油漆的暂时听力损失.
- 听觉灵敏度因频率而异,更高的频率更容易受到噪音引起的变化.
- 在Crysemys picta picta中TTS模式表明Emydidae物种之间的潜在可比性,为更广泛的保护策略提供信息.
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