Author's personal copy Effects of ocean acidification on trace element accumulation in the early-life stages of squid Loligo vulgaris

• Main Authors: T Lacoue-Labarthe, E Réveillac, F Oberhänsli, J L Teyssié, R Jeffree, J P Gattuso
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2011
• Subjects: Ocean acidification
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1060.4946; http://www.obs-vlfr.fr/%7Egattuso/publications_PDF/Lacoue-Labarthe_etal_2011_Aquatic_Toxicology.pdf

a b s t r a c t The anthropogenic release of carbon dioxide (CO 2 ) into the atmosphere leads to an increase in the CO 2 partial pressure (pCO 2 ) in the ocean, which may reach 950 atm by the end of the 21st century. The resulting hypercapnia (high pCO 2 ) and decreasing pH ("ocean acidification") are expected to have appreciable effects on water-breathing organisms, especially on their early-life stages. For organisms like squid that lay their eggs in coastal areas where the embryo and then paralarva are also exposed to metal contamination, there is a need for information on how ocean acidification may influence trace element bioaccumulation during their development. In this study, we investigated the effects of enhanced levels of pCO 2 (380, 850 and 1500 atm corresponding to pH T 54 Mn and 65 Zn accumulation in paralarvae were not significantly modified by hypercapnic conditions. Our results suggest a combined effect of pH on the adsorption and protective properties of the eggshell and of hypercapnia on the metabolism of embryo and paralarvae, both causing changes to the accumulation of metals in the tissues of L. vulgaris.