Fish in habitats with higher motorboat disturbance show reduced sensitivity to motorboat noise
Fish in habitats with higher motorboat disturbance show reduced sensitivity to motorboat noise
复制标题
DOI：
10.1098/rsbl.2018.0441
复制
发表时间：
2018-10-01
期刊：
影响因子：
3.3
通讯作者：
Simpson, Stephen D.
中科院分区：
文献类型：
--
作者：
Harding, Harry R.;Gordon, Timothy A. C.;Simpson, Stephen D.
人为噪音会对世界各地的许多生物产生负面影响。在嘈杂、高干扰的环境中，影响的范围和严重程度可能会随着时间的推移而减少，但以前的干扰的影响仍然没有在自然条件下得到检验。这项研究表明，摩托艇噪音对马拉维湖特有的慈鲷鱼的生理影响。暴露于摩托艇（驱动20-100米，从鱼）和扬声器播放的摩托艇噪音都提高了耗氧率在一个单一的低干扰的网站，其特点是低的历史和当前的摩托艇活动。在更低的干扰点重复该试验，发现摩托艇干扰引起的耗氧量升高具有一致的效果。然而，当类似的试验重复在四个较高的干扰网站，没有影响摩托艇曝光检测。这些结果表明，干扰历史可以影响当地人口对噪声的反应。在规划未来时，有关噪音污染的行动应考虑过去和现在。
Anthropogenic noise can negatively impact many taxa worldwide. It is possible that in noisy, high-disturbance environments, the range and severity of impacts could diminish over time, but the influence of previous disturbance remains untested in natural conditions. This study demonstrates the effects of motorboat noise on the physiology of an endemic cichlid fish in Lake Malawi. Exposure to motorboats (driven 20-100 m from fish) and loudspeaker playback of motorboat noise both elevated the oxygen-consumption rate at a single lower-disturbance site, characterized by low historic and current motorboat activity. Repeating this assay at further lower-disturbance sites revealed a consistent effect of elevated oxygen consumption in response to motorboat disturbance. However, when similar trials were repeated at four higher-disturbance sites, no effect of motorboat exposure was detected. These results demonstrate that disturbance history can affect local population responses to noise. Action regarding noise pollution should consider the past, as well as the present, when planning for the future.