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Ocean acidification erodes crucial auditory behaviour in a marine fish

journal contribution
posted on 03.10.2018, 00:00 by SD Simpson, PL Munday, ML Wittenrich, Rachel Manassa, DL Dixson, M Gagliano, HY Yan
Ocean acidification is predicted to affect marine ecosystems in many ways, including modification of fish behaviour. Previous studies have identified effects of CO2-enriched conditions on the sensory behaviour of fishes, including the loss of natural responses to odours resulting in ecologically deleterious decisions. Many fishes also rely on hearing for orientation, habitat selection, predator avoidance and communication. We used an auditory choice chamber to study the influence of CO2-enriched conditions on directional responses of juvenile clownfish (Amphiprion percula) to daytime reef noise. Rearing and test conditions were based on Intergovernmental Panel on Climate Change predictions for the twenty-first century: current-day ambient, 600, 700 and 900 matm pCO2. Juveniles from ambient CO2-conditions significantly avoided the reef noise, as expected, but this behaviour was absent in juveniles from CO2-enriched conditions. This study provides, to our knowledge, the first evidence that ocean acidification affects the auditory response of fishes, with potentially detrimental impacts on early survival.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

7

Issue

6

Start Page

917

End Page

920

Number of Pages

4

eISSN

1744-957X

ISSN

1744-9561

Publisher

The Royal Society Publishing

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

University of Bristol; James Cook University; Florida Institute of Technology; University of Western Australia; Academia Sinica

Era Eligible

Yes

Journal

Biology Letters