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Replenishment of fish populations is threatened by ocean acidification

Open access
Munday, Philip L., Dixson, Danielle L., McCormick, Mark I., Meekan, Mark, Ferrari, Maud C. O., Chivers, Douglas P.·2010·Proceedings of the National Academy of Sciences

Abstract

There is increasing concern that ocean acidification, caused by the uptake of additional CO 2 at the ocean surface, could affect the functioning of marine ecosystems; however, the mechanisms by which population declines will occur have not been identified, especially for noncalcifying species such as fishes. Here, we use a combination of laboratory and field-based experiments to show that levels of dissolved CO 2 predicted to occur in the ocean this century alter the behavior of larval fish and dramatically decrease their survival during recruitment to adult populations. Altered behavior of larvae was detected at 700 ppm CO 2 , with many individuals becoming attracted to the smell of predators. At 850 ppm CO 2 , the ability to sense predators was completely impaired. Larvae exposed to elevated CO 2 were more active and exhibited riskier behavior in natural coral-reef habitat. As a result, they had 5–9 times higher mortality from predation than current-day controls, with mortality increasing with CO 2 concentration. Our results show that additional CO 2 absorbed into the ocean will reduce recruitment success and have far-reaching consequences for the sustainability of fish populations.

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Metadata

Authors
Munday, P. L., Dixson, D. L., McCormick, M. I., Meekan, M., Ferrari, M. C. O., & Chivers, D. P.
Venue
Proceedings of the National Academy of Sciences
Published
2010-07-06
Volume
107
Issue
29
Pages
12930-12934
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2034916123
Cited by
460
References
6
FWCI
25.23
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Replenishment of fish populations is threatened by ocean acidification. https://app.cochat.ai/papers/10.1073/pnas.1004519107
The paper
Munday, P. L., Dixson, D. L., McCormick, M. I., Meekan, M., Ferrari, M. C. O., & Chivers, D. P. (2010). Replenishment of fish populations is threatened by ocean acidification. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1004519107

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