FN Archimer Export Format PT J TI Failure of bivalve foundation species recruitment related to trophic changes during an extreme heatwave event BT AF Correia-Martins, A Tremblay, R BEC, Beatrice Roques, C ATTEIA, Ariane GOBET, Angélique RICHARD, Marion Hamaguchi, M Miyajima, T Hori, M Miron, G POUVREAU, Stephane LAGARDE, Franck AS 1:1;2:1;3:2;4:2;5:8;6:3;7:3;8:4;9:5;10:4;11:6;12:7;13:3; FF 1:;2:;3:;4:;5:;6:PDG-RBE-MARBEC-LAAAS;7:PDG-ODE-LITTORAL-LERLR;8:;9:;10:;11:;12:PDG-RBE-PFOM-LPI;13:PDG-ODE-LITTORAL-LERLR; C1 Institut des sciences de la mer, Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC G5L 3A1, Canada MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 34095 Montpellier, France MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 34200 Sète, France National Research Institute of Fisheries and Environment of Inland Sea, Fisheries Research Agency, Maruishi 2-17-5, Hatsukaichi, Hiroshima 739-0452, Japan Department of Chemical Oceanography, Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8564, Japan Département de biologie, Université de Moncton, 18 avenue Antonine-Maillet, Moncton, NB E1A 3E9, Canada LEMAR, Ifremer, CNRS, IRD, UBO, 29840 Argenton en Landunvez, France MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 34200 Sète, France C2 UNIV QUEBEC (UQAR-ISMER), CANADA UNIV MONTPELLIER, FRANCE IFREMER, FRANCE FEIS, JAPAN UNIV TOKYO, JAPAN UNIV MONCTON, CANADA IFREMER, FRANCE CNRS, FRANCE SI PALAVAS SETE ARGENTON SE PDG-RBE-MARBEC-LAAAS PDG-ODE-LITTORAL-LERLR PDG-RBE-PFOM-LPI UM LEMAR MARBEC IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-univ-france copubli-int-hors-europe IF 2.5 TC 7 UR https://archimer.ifremer.fr/doc/00777/88906/94571.pdf LA English DT Article DE ;Climate change;Phenology;Extreme heatwave;Bivalves;Pacific oyster;Crassostrea gigas;Reproduction;Larval ecology;Cascade of environmental effects;Trophic changes AB Bivalves are regulators of coastal lagoons and provide a wide range of ecosystem services. However, coastal lagoons are sensitive to climate change. Our objective was to describe the drivers of the cascade of ecological events that occurred during a summer heatwave and which resulted in recruitment failure of the Pacific oyster Crassostrea gigas. Results show that elevated temperatures and salinity caused a shift in planktonic food availability toward smaller taxa. These trophic changes did not affect food accumulation by oyster larvae or their fatty acid composition but did affect post-metamorphosis success, with up to 24% fewer young metamorphosed postlarvae at some sites and no development of juveniles at all sites. This resulted in the failure of oyster recruitment and in the development of tubeworms, a trophic and spatial competitor that can better ingest small particles. This knowledge suggests that, in the context of marine heatwaves, the ecological limits of oyster larvae are narrower than their physiological limits. PY 2022 PD JUL SO Marine Ecology Progress Series SN 0171-8630 PU Inter-Research Science Center VL 691 UT 000814086000006 BP 69 EP 82 DI 10.3354/meps14060 ID 88906 ER EF