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.

Metadata Access
Creator Baden, Susanne;Hernroth, Bodil;Dupont, Sam;Thorndyke, Mike
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2011
Rights Creative Commons Attribution 3.0 Unported (CC-BY)
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Discipline Earth System Research