The effect of underwater sounds on shark behaviour

Lucille Chapuis*, Shaun P. Collin, Kara E. Yopak, Robert D. McCauley, Ryan M. Kempster, Laura A. Ryan, Carl Schmidt, Caroline C. Kerr, Enrico Gennari, Channing A. Egeberg, Nathan S. Hart

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)
    69 Downloads (Pure)

    Abstract

    The effect of sound on the behaviour of sharks has not been investigated since the 1970s. Sound is, however, an important sensory stimulus underwater, as it can spread in all directions quickly and propagate further than any other sensory cue. We used a baited underwater camera rig to record the behavioural responses of eight species of sharks (seven reef and coastal shark species and the white shark, Carcharodon carcharias) to the playback of two distinct sound stimuli in the wild: an orca call sequence and an artificially generated sound. When sounds were playing, reef and coastal sharks were less numerous in the area, were responsible for fewer interactions with the baited test rigs, and displayed less ‘inquisitive’ behaviour, compared to during silent control trials. White sharks spent less time around the baited camera rig when the artificial sound was presented, but showed no significant difference in behaviour in response to orca calls. The use of the presented acoustic stimuli alone is not an effective deterrent for C. carcharias. The behavioural response of reef sharks to sound raises concern about the effects of anthropogenic noise on these taxa.

    Original languageEnglish
    Article number6924
    Pages (from-to)1-11
    Number of pages11
    JournalScientific Reports
    Volume9
    Issue number1
    DOIs
    Publication statusPublished - 6 May 2019

    Bibliographical note

    Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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