The role of ambient sound levels, signal-to-noise ratio, and stimulus pulse rate on behavioural disturbance of seabass in a net pen.

Autor: Hubert J; Institute of Biology Leiden, Leiden University, the Netherlands. Electronic address: j.hubert@biology.leidenuniv.nl., Neo YY; Wageningen Marine Research, Wageningen UR, the Netherlands., Winter HV; Wageningen Marine Research, Wageningen UR, the Netherlands., Slabbekoorn H; Institute of Biology Leiden, Leiden University, the Netherlands.
Jazyk: angličtina
Zdroj: Behavioural processes [Behav Processes] 2020 Jan; Vol. 170, pp. 103992. Date of Electronic Publication: 2019 Nov 05.
DOI: 10.1016/j.beproc.2019.103992
Abstrakt: 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.
(Copyright © 2019 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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