Drivers of shell growth of the bivalve, Callista chione (L. 1758) - Combined it environmental and biological factors

• Published in: Marine Environmental Research
• Main Authors: Purroy, Ariadna, Milano, Stefania, Schoene, Bernd R., Thébault, Julien, Peharda, Melita
• Other Authors: Faculty of Maritime Studies Split, University of Split, Institute of Geosciences Mainz, Johannes Gutenberg - Universität Mainz (JGU), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), European Project: 604802,EC:FP7:PEOPLE,FP7-PEOPLE-2013-ITN,ARAMACC(2013)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2018
• Subjects: ACL; water temperature; Stable isotopes; stable-isotope ratios; Sclerochronology; continental-shelf; particulate organic-matter; Environment; mussel mytilus-galloprovincialis; population-dynamics; arctica-islandica; Bivalve mollusk; glycymeris-glycymeris; Life history traits; phacosoma-japonicum; Seasonal shell growth patterns; spisula-solidissima; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; Arctica islandica
• Online Access: https://hal.archives-ouvertes.fr/hal-02640332; https://doi.org/10.1016/j.marenvres.2018.01.011

WOS:000426027100014 Seasonal shell growth patterns were analyzed using the stable oxygen and carbon isotope values of live-collected specimens of the bivalve Callista chione from two sites in the Adriatic Sea (Pag and Cetina, Croatia). Micromilling was performed on the shell surface of three shells per site and shell oxygen isotopes of the powder samples were measured. The timing and rate of seasonal shell growth was determined by aligning the delta O-18(shell)-derived temperatures so that the best fit was achieved with the instrumental temperature curve. According to the data, shells grew only at very low rates or not at all during the winter months, i.e., between January and March. Shell growth slowdown/shutdown temperatures varied among sites, i.e., 13.6 degrees C at Pag and 16.6 degrees C at Cetina, indicating that temperature was not the only driver of shell growth. Likely, seasonal differences in seawater temperature and food supply were the major component explaining contrasting growth rates of C. chione at two study sites. Decreasing shell growth rates were also associated with the onset of gametogenesis suggesting a major energy reallocation toward reproduction rather than growth. These results highlight the need to combine scier-ochronological analyses with ecological studies to understand life history traits of bivalves as archives of environmental variables.