Seawater carbonate chemistry and bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis ...

• Main Authors: Minet, Antoine, Metian, Marc, Taylor, Angus, Gentes, Sophie, Azemard, Sabine, Oberhänsli, F, Swarzenski, Peter W, Bustamante, Paco, Lacoue-Labarthe, Thomas
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Animalia; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Laboratory experiment; Mollusca; Nekton; North Atlantic; Other; Other metabolic rates; Other studied parameter or process; Pelagos; Sepia officinalis; Single species; Temperate; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Day of experiment; Treatment pH; Figure; Identification; Mercury-203, concentration factors; Mass; Activity; Phase; Contamination; Prey taxa; Mercury-203, concentration factors, standard deviation; Mercury-203, uptake rate constant; Activity, standard deviation; Assimilation efficiency; Assimilation efficiency, standard deviation; Mercury-203, depuration rate constant; Mercury-203, biological half-life; Mercury-203, biological half-life, standard deviation; Time in days; Tissues; Mercury-203, distribution; Mercury-203, distribution, standard deviation; Temperature, water; Temperature, water, standard deviation; Salinity; Alkalinity, total; Alkalinity, total, standard deviation; pH; pH, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.957419; https://doi.pangaea.de/10.1594/PANGAEA.957419

The bioaccumulation of mercury (Hg) in marine organisms through various pathways has not yet been fully explored, particularly in cephalopods. This study utilises radiotracer techniques using the isotope 203Hg to investigate the toxicokinetics and the organotropism of waterborne inorganic Hg (iHg) and dietary inorganic and organic Hg (methylHg, MeHg) in juvenile common cuttlefish Sepia officinalis. The effect of two contrasting CO2 partial pressures in seawater (400 and 1600 μatm, equivalent to pH 8.08 and 7.54 respectively) and two types of prey (fish and shrimp) were tested as potential driving factors of Hg bioaccumulation. After 14 days of waterborne exposure, juvenile cuttlefish showed a stable concentration factor of 709 ± 54 and 893 ± 117 at pH 8.08 and 7.54, respectively. The accumulated dissolved i203Hg was depurated relatively rapidly with a radiotracer biological half-life (Tb1/2) of 44 ± 12 and 55 ± 16 days at pH 8.08 and 7.54, respectively. During the whole exposure period, approximately half of ... : The cuttlefish come from the Arcachon basin and were brought to the IAEA (4 Quai Antoine 1er, 98000 Monaco), and therefore the water used for the experiments was pumped from the sea water there. In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-04-14. ...