Selection on oxidative phosphorylation and ribosomal structure as a multigenerational response to ocean acidification in the common copepod Pseudocalanus acuspes.

ABSTRACT: Ocean acidification is expected to have dramatic impacts on oceanic ecosystems, yet surprisingly few studies currently examine long-term adaptive and plastic responses of marine invertebrates to pCO ₂ stress. Here, we exposed populations of the common copepod Pseudocalanus acuspes to three pCO ₂ regimes (400, 900, and 1550 μatm) for two generations, after which we conducted a reciprocal transplant experiment. A de novo transcriptome was assembled, annotated, and gene expression data revealed that genes involved in RNA transcription were strongly down-regulated in populations with long-term exposure to a high pCO ₂ environment, even after transplantation back to control levels. In addition, 747 000 SNPs were identified, out

SUBMITTER: De Wit P 

PROVIDER: S-EPMC5039324 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature