Transcriptome profiling reveals exposure to predicted end-of-century ocean acidification as a stealth stressor for Atlantic cod larvae.

ABSTRACT: Ocean acidification (OA), a direct consequence of increasing atmospheric CO₂ concentration dissolving in ocean waters, is impacting many fish species. Little is known about the molecular mechanisms underlying the observed physiological impacts in fish. We used RNAseq to characterize the transcriptome of 3 different larval stages of Atlantic cod (Gadus morhua) exposed to simulated OA at levels (1179 µatm CO₂) representing end-of-century predictions compared to controls (503 µatm CO₂), which were shown to induce tissue damage and elevated mortality in G. morhua. Only few genes were differentially expressed in 6 and 13 days-post-hatching (dph) (3 and 16 genes, respectively), during a period when maximal mortality as a response to elevated pCO₂ occur

SUBMITTER: Mittermayer FH 

PROVIDER: S-EPMC6858462 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature