La Manna G, Manghi M, Perretti F, Sarà G
MareTerra Onlus - Environmental Research and Conservation, Regione Salondra 9, Alghero, Italy.
MareTerra Onlus - Environmental Research and Conservation, Regione Salondra 9, Alghero, Italy; NAUTA Scientific, Strada della Carità 8, Milano, Italy.
Mar Pollut Bull. 2016 Sep 15;110(1):324-334. doi: 10.1016/j.marpolbul.2016.06.045. Epub 2016 Jun 14.
Underwater man-made noise is recognized as a major global pollutant in the 21st Century, and its reduction has been included in national and international regulations. Despite the fact that many studies have pointed out the ecological impact of noise on marine organisms, few studies have investigated - in a field context - the behavioral response to boat noise in fish. In the present study we measure how Sciaena umbra reacts to boat noise. We found that boat noise: i) increased duration of flight reactions and number of individuals performing them, ii) increased the frequency of hiding behaviors, and iii) did not elicit a change in fish activity level and sound emission. Flights and hiding behavior, usually related to predation risk, were not uniform between individuals and showed a quick recovery after noise exposure. On the basis of these results, potential metabolic, physiological and behavioral consequences are discussed and management recommendations are proposed.
水下人为噪声被认为是21世纪的一种主要全球污染物，其减少已被纳入国家和国际法规。尽管许多研究指出了噪声对海洋生物的生态影响，但很少有研究在野外环境中调查鱼类对船只噪声的行为反应。在本研究中，我们测量了黑鳍舌鳎对船只噪声的反应。我们发现船只噪声：i）增加了逃避反应的持续时间和进行逃避反应的个体数量，ii）增加了躲藏行为的频率，iii）没有引起鱼类活动水平和声音发射的变化。逃避和躲藏行为通常与捕食风险有关，个体之间并不一致，并且在噪声暴露后显示出快速恢复。基于这些结果，讨论了潜在的代谢、生理和行为后果，并提出了管理建议。
