FN Archimer Export Format PT J TI Gene expression plasticity, genetic variation and fatty acid remodelling in divergent populations of a tropical bivalve species BT AF Le Luyer, Jeremy Monaco, Cristian Milhade, Leo Reisser, Celine Soyez, Claude RAAPOTO, Hirohiti Belliard, Corinne Le Moullac, Gilles Ky, Chin-Long Pernet, Fabrice AS 1:1;2:1;3:1;4:1,2;5:1;6:1;7:1;8:1;9:1,3;10:4; FF 1:PDG-RBE-RMPF;2:PDG-RBE-RMPF;3:PDG-RBE-RMPF;4:PDG-RBE-MARBEC;5:PDG-RBE-RMPF;6:PDG-RBE-RMPF;7:PDG-RBE-RMPF;8:PDG-RBE-RMPF;9:PDG-RBE-IHPE;10:PDG-RBE-PFOM-LPI; C1 Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO Taravao, Tahiti, Polynésie française, France MARBEC, Univ Montpellier, CNRS, IFREMER, IRD Montpellier, France Ifremer, IHPE, Univ. Montpellier, CNRS, Univ. Perpignan Via Domitia Montpellier, France Univ Brest, Ifremer, CNRS, IRD, LEMAR Plouzané, France C2 IFREMER, FRANCE IFREMER, FRANCE IFREMER, FRANCE IFREMER, FRANCE SI TAHITI MONTPELLIER BREST SE PDG-RBE-RMPF PDG-RBE-MARBEC PDG-RBE-IHPE PDG-RBE-PFOM-LPI UM LEMAR MARBEC IHPE EIO IN WOS Ifremer UMR IF 4.8 TC 2 UR https://archimer.ifremer.fr/doc/00766/87848/93426.pdf https://archimer.ifremer.fr/doc/00766/87848/93428.docx LA English DT Article DE ;acclimation;fatty acids remodelling;genetic divergence;physiology;RNAseq;thermal plasticity AB Ocean warming challenges marine organisms' resilience, especially for species experiencing temperatures close to their upper thermal limits. A potential increase in thermal tolerance might significantly reduce the risk of population decline, which is intrinsically linked to variability in local habitat temperatures. Our goal was to assess the plastic and genetic potential of response to elevated temperatures in a tropical bivalve model, Pinctada margaritifera. We benefit from two ecotypes for which local environmental conditions are characterized by either large diurnal variations in the tide pools (Marquesas archipelago) or low mean temperature with stable to moderate seasonal variations (Gambier archipelago). We explored the physiological basis of individual responses to elevated temperature, genetic divergence as well as plasticity and acclimation by combining lipidomic and transcriptomic approaches. We show that P. margaritifera has certain capacities to adjust to long-term elevated temperatures that was thus far largely underestimated. Genetic variation across populations overlaps with gene expression and involves the mitochondrial respiration machinery, a central physiological process that contributes to species thermal sensitivity and their distribution ranges. Our results present evidence for acclimation potential in P. margaritifera and urge for longer term studies to assess populations resilience in the face of climate change. PY 2022 PD JUL SO Journal Of Animal Ecology SN 0021-8790 PU Wiley VL 91 IS 6 UT 000786446100001 BP 1196 EP 1208 DI 10.1111/1365-2656.13706 ID 87848 ER EF