Combined effects of ocean warming and acidification on the larval stages of the European abalone Haliotis tuberculata

Type Article
Date 2022-02
Language English
Author(s) Kavousi Javid1, Roussel Sabine1, Martin Sophie2, 3, Gaillard Fanny3, Badou Aicha4, Di Poi CaroleORCID5, Huchette Sylvain6, Dubois Philippe7, Auzoux-Bordenave Stéphanie2, 8
Affiliation(s) 1 : Univ Brest, CNRS, IRD, Ifremer, LEMAR, Plouzane, France
2 : Sorbonne Université, 4 place Jussieu, Paris 75005, France
3 : UMR 7144 “Adaptation et Diversité en Milieu Marin” (AD2M), CNRS/SU, Station Biologique de Roscoff, Roscoff, Cedex, 29680, France
4 : Direction Generale Deleguee a la Recherche, l'Expertise, la Valorisation et l'Enseignement (DGD REVE), Muséum National d'Histoire Naturelle, Station marine de Concarneau, Concarneau 29900, France
5 : Ifremer, LEMAR UMR 6539 UBO/CNRS/IRD/Ifremer, Argenton, France
6 : Ecloserie France Haliotis, Kerazan, Plouguerneau 29880, France
7 : Laboratoire de Biologie Marine, Université Libre de Bruxelles, CP160/15, 1050, Brussels, Belgium
8 : UMR “Biologie des Organismes et Ecosystèmes Aquatiques” (BOREA), MNHN/CNRS/SU/IRD, Muséum National d'Histoire Naturelle, Station Marine de Concarneau, Concarneau 29900, France
Source Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2022-02 , Vol. 175 , P. 113131 (15p.)
DOI 10.1016/j.marpolbul.2021.113131
WOS© Times Cited 8
Keyword(s) Ocean acidification, Global warming, Climate change, Marine mollusks, Abalone larvae

This study examined the physiological responses of the larval stages of Haliotis tuberculata, an economically important abalone, to combined temperature (17 °C and 19 °C) and pH (ambient pH and −0.3 units, i.e., +200% increase in seawater acidity) in a full factorial experiment. Tissue organogenesis, shell formation, and shell length significantly declined due to low pH. High temperature significantly increased the proportion of fully shelled larvae at 24 h post-fertilization (hpf), but increased the proportion of unshelled larvae at 72 hpf. Percentage of swimming larvae at 24 hpf, 72 hpf and 96 hpf significantly declined due to high temperature, but not because of low pH. Larval settlement increased under high temperature, but was not affected by low pH. Despite the fact that no interaction between temperature and pH was observed, the results provide additional evidence on the sensitivity of abalone larvae to both low pH and high temperature. This may have negative consequences for the persistence of abalone populations in natural and aquaculture environments in the near future.

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Kavousi Javid, Roussel Sabine, Martin Sophie, Gaillard Fanny, Badou Aicha, Di Poi Carole, Huchette Sylvain, Dubois Philippe, Auzoux-Bordenave Stéphanie (2022). Combined effects of ocean warming and acidification on the larval stages of the European abalone Haliotis tuberculata. Marine Pollution Bulletin, 175, 113131 (15p.). Publisher's official version : , Open Access version :