| 郭熊,赵健伦,江廷磊,冯江.2015.东方蝙蝠在交通噪声环境中的回声定位行为.动物学杂志,50(4):615-620. |
| 东方蝙蝠在交通噪声环境中的回声定位行为 |
| Traffic Noise Affects the Characteristics of Echolocation Pulse in Asian Parti-Colored Bat, Vespertilio sinensis |
| 投稿时间：2014-11-27 修订日期：2015-06-23 |
| DOI：DOI: 10.13859/j.cjz.201504014 |
| 中文关键词: 回声定位声波 交通噪声 声信号可塑性 |
| 英文关键词:Echolocation pulses Traffic noise Vocal signal plasticity |
| 基金项目:国家自然科学基金项目（面上项目，重点项目）;教育部新教师青年基金 |
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| 中文摘要: |
| 环境噪声降低动物声信号可探测性,是动物声信号进化的压力。为了避免人工噪声干扰,多数脊椎动物调整其叫声的频谱-时间结构,如延长叫声持续时间,提高频率和增加强度等策略。本研究选择回声定位声波频域与交通噪声相互重叠的东方蝙蝠(Vespertilio superans)为研究对象,在自然条件下开展实验,研究交通噪声对蝙蝠回声定位声波的影响。本试验选择交通噪声强度水平存在差异的两个样点,分别录制东方蝙蝠的回声定位声波,分析其结构参数。结果显示：在交通噪声强度较高的样点,东方蝙蝠回声定位声波的持续时间、斜率均未显著改变,但起始频率、主频、终止频率、带宽均显著提高。结果表明东方蝙蝠的回声定位行为在交通噪声干扰下具有明显的可塑性。 |
| 英文摘要: |
| An important environmental selection pressure impending signal detection is ambient noise. Vertebrates use a number of strategies to avoid signal masking by anthropogrnic noise, including increasing call duration, frequency and amplitude. We tested wether traffic noise level influenced echolocation behavior in Vespertilio superans under nature condition. We recorded the echolocation calls emitted by two groups of bats which were flying in different traffic noise level. The results showed that only call frequency raised in respond to high traffic noise, including starting frequency (T test: p < 0.001), peak frequency (Mann-Whitney U: p < 0.001), ending frequency (Mann-Whitney U: p < 0.001) and bandwidth (T test: p < 0.05), instead of call duration (T test: p > 0.05) and slope (Mann-Whitney U: p > 0.05). These results indicate that the echolocation calls of Vespertilio superans have significant plasticity in traffic noise. |
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