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Responses of pink salmon to CO2-induced aquatic acidification

Author

Listed:
  • Michelle Ou

    (University of British Columbia)

  • Trevor J. Hamilton

    (MacEwan University)

  • Junho Eom

    (University of British Columbia)

  • Emily M. Lyall

    (University of British Columbia)

  • Joshua Gallup

    (MacEwan University)

  • Amy Jiang

    (University of British Columbia)

  • Jason Lee

    (University of British Columbia)

  • David A. Close

    (University of British Columbia
    Fisheries Centre, University of British Columbia)

  • Sang-Seon Yun

    (Fisheries Centre, University of British Columbia
    Faculty of Land and Food Systems, University of British Columbia)

  • Colin J. Brauner

    (University of British Columbia)

Abstract

Ocean acidification negatively affects many marine species and is predicted to cause widespread changes to marine ecosystems. Similarly, freshwater ecosystems may potentially be affected by climate-change-related acidification; however, this has received far less attention. Freshwater fish represent 40% of all fishes, and salmon, which rear and spawn in freshwater, are of immense ecosystem, economical and cultural importance. In this study, we investigate the impacts of CO2-induced acidification during the development of pink salmon, in freshwater and following early seawater entry. At this critical and sensitive life stage, we show dose-dependent reductions in growth, yolk-to-tissue conversion and maximal O2 uptake capacity; as well as significant alterations in olfactory responses, anti-predator behaviour and anxiety under projected future increases in CO2 levels. These data indicate that future populations of pink salmon may be at risk without mitigation and highlight the need for further studies on the impact of CO2-induced acidification on freshwater systems.

Suggested Citation

  • Michelle Ou & Trevor J. Hamilton & Junho Eom & Emily M. Lyall & Joshua Gallup & Amy Jiang & Jason Lee & David A. Close & Sang-Seon Yun & Colin J. Brauner, 2015. "Responses of pink salmon to CO2-induced aquatic acidification," Nature Climate Change, Nature, vol. 5(10), pages 950-955, October.
    • Handle: RePEc:nat:natcli:v:5:y:2015:i:10:d:10.1038_nclimate2694
    DOI: 10.1038/nclimate2694
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    Cited by:

    1. Laura J. Falkenberg & Richard G.J. Bellerby & Sean D. Connell & Lora E. Fleming & Bruce Maycock & Bayden D. Russell & Francis J. Sullivan & Sam Dupont, 2020. "Ocean Acidification and Human Health," IJERPH, MDPI, vol. 17(12), pages 1-20, June.

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