01743nas a2200181   4500008004100000245013600041210006900177520108800246653002401334653002501358653001901383653002601402100001501428700001401443700001701457700002001474856006701494       2019                        eng d00aThe role of ambient sound levels, signal-to-noise ratio, and stimulus pulse rate on behavioural disturbance of seabass in a net pen0 arole of ambient sound levels signaltonoise ratio and stimulus pu3 a<p>Anthropogenic sources increasingly contribute to the underwater soundscape and this may negatively impact aquatic life, including fish. Anthropogenic sound may mask relevant sound, alter behaviour, physiology, and may lead to physical injury. Behavioural effect studies are often seen as critical to evaluate individual and population-level impact. However, behavioural responsiveness likely depends on context and characteristics of sound stimuli. We pose that ambient sound levels, signal-to-noise ratio (SNR), and pulse rate interval (PRI), could affect the behavioural response of fish. To study this, we experimentally exposed groups of tagged European seabass (Dicentrarchus labrax) to different impulsive sound treatments that varied in pulse level, elevated background level, SNR, and PRI. Upon sound exposure, the seabass increased their swimming depth. The variation in the increase in swimming depth could not be attributed to pulse level, background level, SNR or PRI. It may be that the current range of sound levels or PRIs was too narrow to find such effects.</p>
10aanthropogenic noise10aDicentrarchus labrax10aFish behaviour10asignal-to-noise ratio1 aHubert, J.1 aNeo, Y.Y.1 aWinter, H.V.1 aSlabbekoorn, H.  uhttps://linkinghub.elsevier.com/retrieve/pii/S0376635719303298