Impacts of ocean acidification and warming on post-larval growth and metabolism in two populations of the great scallop (Pecten maximus)

Type Article
Date 2023-06
Language English
Author(s) Harney EwanORCID1, 2, Rastrick Samuel P. S.3, Artigaud Sebastien1, Pisapia Julia2, Bernay BenoitORCID4, Miner Philippe2, Pichereau VianneyORCID1, Strand ØivindORCID3, Boudry PierreORCID5, Charrier GregoryORCID1
Affiliation(s) 1 : Univ Brest, CNRS, IRD, Ifremer, UMR 6539, LEMAR, IUEM-UBO, 29280 Plouzané, France
2 : Ifremer Centre Bretagne, LEMAR UMR 6539, 29280 Plouzané, France
3 : Institute of Marine Research (IMR), Nordnes, 5817 Bergen , Norway
4 : Platform Proteogen, SF ICORE 4206, Caen-Normandy University, 14032 Caen, France
5 : Ifremer Centre Bretagne, Département Ressources Biologiques et Environnement , 29280 Plouzané, France
Source Journal Of Experimental Biology (0022-0949) (The Company of Biologists), 2023-06 , Vol. 226 , N. 11 , P. jeb245383 (17p.)
DOI 10.1242/jeb.245383
Keyword(s) Bivalve, Proteomics, Trade-offs, Calcification, Climate change, Physiological plasticity

Ocean acidification and warming are key stressors for many marine organisms. Some organisms display physiological acclimatization or plasticity, but this may vary across species ranges, especially if populations are adapted to local climatic conditions. Understanding how acclimatization potential varies among populations is therefore important in predicting species responses to climate change. We carried out a common garden experiment to investigate how different populations of the economically important great scallop (Pecten maximus) from France and Norway responded to variation in temperature and PCO2 concentration. After acclimation, post-larval scallops (spat) were reared for 31 days at one of two temperatures (13°C or 19°C) under either ambient or elevated PCO2 (pH 8.0 and pH 7.7). We combined measures of proteomic, metabolic and phenotypic traits to produce an integrative picture of how physiological plasticity varies between the populations. The proteome of French spat showed significant sensitivity to environmental variation, with 12 metabolic, structural and stress-response proteins responding to temperature and/or PCO2. Principal component analysis revealed seven energy metabolism proteins in French spat that were consistent with countering ROS stress under elevated temperature. Oxygen uptake in French spat did not change under elevated temperature but increased under elevated PCO2. In contrast, Norwegian spat reduced oxygen uptake under both elevated temperature and PCO2. Metabolic plasticity allows French scallops to maintain greater energy availability for growth compared with Norwegian spat. However, increased physiological plasticity and growth in French spat may come at a cost, as they showed reduced survival compared with Norwegian scallops under elevated temperature.

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Preprint - 10.1101/2022.12.02.518857 42 1 MB Open access
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Harney Ewan, Rastrick Samuel P. S., Artigaud Sebastien, Pisapia Julia, Bernay Benoit, Miner Philippe, Pichereau Vianney, Strand Øivind, Boudry Pierre, Charrier Gregory (2023). Impacts of ocean acidification and warming on post-larval growth and metabolism in two populations of the great scallop (Pecten maximus). Journal Of Experimental Biology, 226(11), jeb245383 (17p.). Publisher's official version : , Open Access version :