Ocean acidification affects somatic and otolith growth relationship in fish: evidence from an in situ study.

ABSTRACT: Ocean acidification (OA) may have varied effects on fish eco-physiological responses. Most OA studies have been carried out in laboratory conditions without considering the in situ pCO₂/pH variability documented for many marine coastal ecosystems. Using a standard otolith ageing technique, we assessed how in situ ocean acidification (ambient, versus end-of-century CO₂ levels) can affect somatic and otolith growth, and their relationship in a coastal fish. Somatic and otolith growth rates of juveniles of the ocellated wrasse Symphodus ocellatus living off a Mediterranean CO₂ seep increased at the high- pCO₂ site. Also, we detected that slower-growing individuals living at ambient pCO₂ levels tend to have larger otoliths at the same soma

SUBMITTER: Di Franco A 

PROVIDER: S-EPMC6405470 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature