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Other research product . Collection . 2016

KOSMOS Finland 2012 mesocosm study: Acartia sp. egg production rate, adult female size, adult female antioxidant capacity, and egg-hatching succes and nauplii development index of the egg transplant experiment

Vehmaa, Anu; Almén, Anna-Karin; Brutemark, Andreas; Paul, Allanah Joy; Riebesell, Ulf; Furuhagen, Sara; Engström-Öst, Jonna;
Published: 01 Jan 2016
Publisher: PANGAEA

Ocean acidification is challenging phenotypic plasticity of individuals and populations. Calanoid copepods (zooplankton) are shown to be fairly plastic against altered pH conditions, and laboratory studies indicate that transgenerational effects are one mechanism behind this plasticity. We studied phenotypic plasticity of the copepod Acartia sp. in the course of a pelagic, large-volume mesocosm study that was conducted to investigate ecosystem and biogeochemical responses to ocean acidification. We measured copepod egg production rate, egg-hatching success, adult female size and adult female antioxidant capacity (ORAC) as a function of acidification (fCO2 ~ 365-1231 µatm) and as a function of quantity and quality of their diet. We used an egg transplant experiment to reveal whether transgenerational effects can alleviate the possible negative effects of ocean acidification on offspring development. We found significant negative effects of ocean acidification on adult female size. In addition, we found signs of a possible threshold at high fCO2, above which adaptive maternal effects cannot alleviate the negative effects of acidification on egg-hatching and nauplii development. We did not find support for the hypothesis that insufficient food quantity (total particulate carbon < 55 µm) or quality (C : N) weakens the transgenerational effects. However, females with high-ORAC-produced eggs with high hatching success. Overall, these results indicate that Acartia sp. could be affected by projected near-future CO2 levels.

Subjects by Vocabulary

Medical Subject Headings: fungi


Biological Impacts of Ocean Acidification (BIOACID)

Funded by
Network of leading MESOcosm facilities to advance the studies of future AQUAtic ecosystems from the Arctic to the Mediterranean
  • Funder: European Commission (EC)
  • Project Code: 228224
  • Funding stream: FP7 | SP4 | INFRA
AKA| Zooplankon responses to acidification and warming in the marine environment
  • Funder: Academy of Finland (AKA)
  • Project Code: 276947
Related to Research communities
European Marine Science