Anthropogenic noise pollution from pile-driving disrupts the structure and dynamics of fish shoals.
Anthropogenic noise pollution from pile-driving disrupts the structure and dynamics of fish shoals.
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DOI：
10.1098/rspb.2017.1627
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发表时间：
2017-09-27
期刊：
影响因子：
--
通讯作者：
Ioannou CC
中科院分区：
文献类型：
--
作者：
Herbert-Read JE;Kremer L;Bruintjes R;Radford AN;Ioannou CC
人类各种活动产生的噪音会影响动物个体的生理和行为，但噪音是否会扰乱动物的社会行为在很大程度上是未知的。像鸟群或鱼群这样的动物群体使用简单的互动规则来协调它们与近邻的运动。反过来，这种协调使个体能够获得群体生活的好处，例如减少捕食风险和社会信息交流。如果噪音被视为一种威胁，或者如果噪音掩盖、分散或压迫个体，噪音可能会改变个体在群体中的互动方式，这可能会影响群体的利益。在这里，我们记录了轨迹的个别少年鲈鱼（Dicentrarchus labrax）在控制实验室条件下的组。小组被暴露在回放的环境背景声音记录在他们的自然栖息地，或回放打桩，通常用于海洋建设。打桩回放影响鱼群的结构和动力学显着超过环境声音播放。与环境声音播放相比，经历打桩播放的群体变得不那么凝聚力，方向性更差，并且在速度和方向变化方面的相关性更低。实际上，额外的噪音处理破坏了个体协调彼此运动的能力。我们的工作突出了打桩噪音污染破坏鱼群集体动力学的潜力，这可能会对一组集体行为的功能效益产生影响。
Noise produced from a variety of human activities can affect the physiology and behaviour of individual animals, but whether noise disrupts the social behaviour of animals is largely unknown. Animal groups such as flocks of birds or shoals of fish use simple interaction rules to coordinate their movements with near neighbours. In turn, this coordination allows individuals to gain the benefits of group living such as reduced predation risk and social information exchange. Noise could change how individuals interact in groups if noise is perceived as a threat, or if it masked, distracted or stressed individuals, and this could have impacts on the benefits of grouping. Here, we recorded trajectories of individual juvenile seabass (Dicentrarchus labrax) in groups under controlled laboratory conditions. Groups were exposed to playbacks of either ambient background sound recorded in their natural habitat, or playbacks of pile-driving, commonly used in marine construction. The pile-driving playback affected the structure and dynamics of the fish shoals significantly more than the ambient-sound playback. Compared to the ambient-sound playback, groups experiencing the pile-driving playback became less cohesive, less directionally ordered, and were less correlated in speed and directional changes. In effect, the additional-noise treatment disrupted the abilities of individuals to coordinate their movements with one another. Our work highlights the potential for noise pollution from pile-driving to disrupt the collective dynamics of fish shoals, which could have implications for the functional benefits of a group's collective behaviour.
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