An interplay between plasticity and parental phenotype determines impacts of ocean acidification on a reef fish

Schunter, Celia, Welch, Megan J., Nilsson, Göran E., Rummer, Jodie L., Munday, Philip L., and Ravasi, Timothy (2018) An interplay between plasticity and parental phenotype determines impacts of ocean acidification on a reef fish. Nature Ecology & Evolution, 2. pp. 334-342.

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Abstract

The impacts of ocean acidification will depend on the ability of marine organisms to tolerate, acclimate and eventually adapt to changes in ocean chemistry. Here, we use a unique transgenerational experiment to determine the molecular response of a coral reef fish to short-term, developmental and transgenerational exposure to elevated CO2, and to test how these responses are influenced by variations in tolerance to elevated CO2 exhibited by the parents. Within-generation responses in gene expression to end-of-century predicted CO2 levels indicate that a self-amplifying cycle in GABAergic neurotransmission is triggered, explaining previously reported neurological and behavioural impairments. Furthermore, epigenetic regulator genes exhibited a within-generation specific response, but with some divergence due to parental phenotype. Importantly, we find that altered gene expression for the majority of within-generation responses returns to baseline levels following parental exposure to elevated CO2 conditions. Our results show that both parental variation in tolerance and cross-generation exposure to elevated CO2 are crucial factors in determining the response of reef fish to changing ocean chemistry.

Item ID: 53453
Item Type: Article (Research - C1)
ISSN: 2397-334X
Copyright Information: © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
Funders: King Abdullah University of Science and Technology (KAUST) Office of Competitive Research Funds (OCRF), Australian Research Council (ARC), ARC Centre of Excellence for Coral Reef Studies (CECRS), University of Oslo (UO)
Projects and Grants: KAUST OCRF OSR-2015-CRG4-2541
Date Deposited: 21 Mar 2018 07:44
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060306 Evolutionary Impacts of Climate Change @ 100%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960305 Ecosystem Adaptation to Climate Change @ 100%
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