Effect of increased pCO2 in seawater on survival rate of different developmental stages of the harpacticoid copepod Tigriopus japonicus

Je Hyeok Oh, Dongsung Kim, Tae Won Kim, Teawook Kang, Ok Hwan Yu, Wonchoel Lee

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The rapid increase in carbon dioxide levels in seawater is causing ocean acidification and is expected to have significant effects on marine life. To explore the ability of the harpacticoid copepod Tigriopus japonicus to adapt to an increased concentration of dissolved carbon dioxide (CO2) in seawater, we compared the survival rates of adult and nauplius stages at 400, 1000, and 1550 ppm pCO2 over a 14-day period. The survival rate of T. japonicus dramatically decreased over time with increase in pCO2 concentration. At 1550 ppm, the survival rate showed a decrease of more than 20% at the end of the experimental period over that at 400 ppm. Furthermore, the survival rate decreased by a greater amount at all concentrations in nauplii than in adults, with a greater effect in wild-collected specimens than in culture-derived individuals. The results suggest that future ocean acidification may negatively influence the sustainability of T. japonicus and thus may eventually influence benthic ecosystems.

Original languageEnglish
Pages (from-to)217-222
Number of pages6
JournalAnimal Cells and Systems
Volume21
Issue number3
DOIs
StatePublished - 2017 May 17

Keywords

  • Ocean acidification
  • Tigriopus japonicus
  • carbon dioxide
  • harpacticoid copepod
  • survival rate

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