Seawater carbonate chemistry and cadmium uptake of the smooth scallop Flexopecten glaber ...

• Main Authors: Nardi, Alessandro, Benedetti, Maura, Fattorini, Daniele, Regoli, Francesco
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Flexopecten glaber; Immunology/Self-protection; Inorganic toxins; Laboratory experiment; Mediterranean Sea; Mollusca; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Treatment; Identification; Experiment duration; Temperature, water; Salinity, standard deviation; Cadmium; Cadmium, standard deviation; Metallothionein, per protein mass; Metallothionein per protein, standard deviation; Glutathione, total, per unit wet mass; Glutathione, total, per unit wet mass, standard deviation; Catalase activity, per protein mass; Catalase activity, standard deviation; Glutathione S-transferase, activity per protein mass; Glutathione S-transferase, activity per protein mass, standard deviation; Glutathione reductase, per protein mass; Glutathione reductase, unit per protein mass, standard deviation; Selenium dependent glutathione peroxidases activity, per protein mass; Selenium dependent glutathione peroxidases activity, unit per protein mass, standard deviation; Total glutathione peroxidases activity, per protein mass; Total glutathione peroxidases activity, unit per protein mass, standard deviation; Total oxyradical scavenging capacity against peroxyl radicals, unit per protein mass; Total oxyradical scavenging capacity against peroxyl radicals, unit per protein mass, standard deviation; Total oxyradical scavenging capacity against hydroxyl radicals, unit per protein mass; Total oxyradical scavenging capacity against hydroxyl radicals, unit per protein mass, standard deviation; Hemocytes lysosomal membranes stability; Hemocytes lysosomal membranes stability, standard deviation; Hemocytes DNA strand breaks; Hemocytes DNA strand breaks, standard deviation; Hemocytes micronuclei frequency; Hemocytes micronuclei frequency, standard deviation; Temperature, water, standard deviation; pH; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.887768; https://doi.pangaea.de/10.1594/PANGAEA.887768

Ocean acidification (OA) may affect sensitivity of marine organisms to metal pollution modulating chemical bioavailability, bioaccumulation and biological responsiveness of several cellular pathways. In this study, the smooth scallop Flexopecten glaber was exposed to various combinations of reduced pH (pH/pCO2 7.4/3000 µatm) and Cd (20 µg/L). The analyses on cadmium uptake were integrated with those of a wide battery of biomarkers including metallothioneins, single antioxidant defenses and total oxyradical scavenging capacity in digestive gland and gills, lysosomal membrane stability and onset of genotoxic damage in haemocytes. Reduced pH slightly increased concentration of Cd in scallop tissues, but no effects were measured in terms of metallothioneins. Induction of some antioxidants by Cd and/or low pH in the digestive gland was not reflected in variations of the total oxyradical scavenging capacity, while the investigated stressors caused a certain inhibition of antioxidants and reduction of the ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 2018-03-28. ...