Ocean acidification and temperature rise: effects on calcification during early development of the cuttlefish Sepia officinalis

• Published in: Marine Biology
• Main Authors: Dorey, Narimane, Melzner, Frank, Martin, Sophie, Oberhänsli, François, Teyssié, Jean-Louis, Bustamante, Paco, Gattuso, Jean-Pierre, Lacoue-Labarthe, Thomas
• Other Authors: Environment Laboratories (IAEA), International Atomic Energy Agency Vienna (IAEA), Department of Biological and Environmental Sciences Gothenburg, Göteborgs Universitet = University of Gothenburg (GU), Helmholtz Centre for Ocean Research Kiel (GEOMAR), Adaptation et diversité en milieu marin (AD2M), Station biologique de Roscoff Roscoff (SBR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), LIttoral ENvironnement et Sociétés (LIENSs), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'océanographie de Villefranche (LOV), Observatoire océanologique de Villefranche-sur-mer (OOVM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2013
• Subjects: early-life stages; calcification; cephalopod; Sepia officinalis; ocean acidification; global warming; Ca-45; [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology; Ocean acidification
• Online Access: https://hal.science/hal-00855750; https://hal.science/hal-00855750/document; https://hal.science/hal-00855750/file/Dorey_et_al._2012_MARBIOL.pdf; https://doi.org/10.1007/s00227-012-2059-6

International audience This study investigated the effects of seawater pH (i.e. 8.10, 7.85 and 7.60) and temperature (16 and 19°C) on (i) the abiotic conditions in the fluid surrounding the embryo (viz. the perivitelline fluid), (ii) growth, development and (iii) cuttlebone calcification of embryonic and juvenile stages of the cephalopod Sepia officinalis. Egg swelling increased in response to acidification or warming, leading to an increase in egg surface while the interactive effects suggested a limited plasticity of the swelling modulation. Embryos experienced elevated pCO2 conditions in the perivitelline fluid (> 3-fold higher pCO2 than that of ambient seawater), rendering the medium under-saturated even under ambient conditions. The growth of both embryos and juveniles was unaffected by pH, whereas 45Ca incorporation in cuttlebone increased significantly with decreasing pH at both temperatures. This phenomenon of hypercalcification is limited to only a number of animals but does not guarantee functional performance and calls for better mechanistic understanding of calcification processes.