Seawater carbonate chemistry and echinoderm Asterias rubens biological processes during experiments, 2011, supplement to: Hernroth, Bodil; Baden, Susanne; Thorndyke, Mike; Dupont, Sam (2011): Immune suppression of the echinoderm Asterias rubens (L.) following long-term ocean acidification. Aquatic Toxicology, 103(3-4), 222-224


We compared effects of exposure to predicted near-future (2100) ocean acidification (OA; pH 7.7) and normal seawater (Control; pH 8.1) on immune and stress responses in the adult sea star Asterias rubens. Analyses were made after one week and after six months of continuous exposure. Following one week exposure to acidified water, the pH of coelomic fluid was significantly reduced. Levels of the chaperon Hsp70 were elevated while key cellular players in immunity, coelomocytes, were reduced by approximately 50%. Following long-term exposure (six months) levels of Hsp70 returned to control values, whereas immunity was further impaired, evidenced by the reduced phagocytic capacity of coelomocytes and inhibited activation of p38 MAP-kinase. Such impacts of reduced seawater pH may have serious consequences for resistance to pathogens in a future acidified ocean.

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).

Related Identifier
Metadata Access
Creator Hernroth, Bodil; Baden, Susanne; Thorndyke, Mike; Dupont, Sam
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Contributor Nisumaa, Anne-Marin
Publication Year 2011
Funding Reference Seventh Framework Programme, 211384; Sixth Framework Programme, 511106
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 551 data points
Discipline Immunology