Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus.

ABSTRACT: The rising anthropogenic atmospheric CO₂ results in the reduction of seawater pH, namely ocean acidification (OA). In East China Sea, the largest coastal hypoxic zone was observed in the world. This region is also strongly impacted by ocean acidification as receiving much nutrient from Changjiang and Qiantangjiang, and organisms can experience great short-term natural variability of DO and pH in this area. In order to evaluate the defense responses of marine mussels under this scenario, the thick shell mussel Mytilus coruscus were exposed to three pH/pCO₂ levels (7.3/2800 μatm, 7.7/1020 μatm, 8.1/376 μatm) at two dissolved oxygen concentrations (DO, 2.0, 6.0 mg L^-1) for 72 h. Results showed that byssus thread parameters, such as the number, diameter,

SUBMITTER: Sui Y 

PROVIDER: S-EPMC5343010 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature