Tolerance of juvenile Mytilus galloprovincialis to experimental seawater acidification

• Main Authors: Fernández-Reiriz, Ma José, Range, P, Alvarez-Salgado, Xose Anton, Espinosa, Joaquin, Labarta, Uxio
• Format: Dataset
• Language: English
• Published: PANGAEA 2012
• Subjects: Absorption; standard deviation; Alkalinity; total; standard error; Ammonia excretion; per organic weight; Animalia; Aragonite saturation state; Ash; Benthic animals; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated; Calculated using seacarb after Nisumaa et al. (2010); Carbon; inorganic; dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Clearance rate; Coast and continental shelf; Date; Dry mass; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.825020; https://doi.org/10.1594/PANGAEA.825020

Coastal ocean acidification is expected to interfere with the physiology of marine bivalves. In this work, the effects of acidification on the physiology of juvenile mussels Mytilus galloprovincialis were tested by means of controlled CO2 perturbation experiments. The carbonate chemistry of natural (control) seawater was manipulated by injecting CO2 to attain 2 reduced pH levels: -0.3 and -0.6 pH units as compared with the control seawater. After 78 d of exposure, we found that the absorption efficiency and ammonium excretion rate of juveniles were inversely related to pH. Significant differences among treatments were not observed in clearance, ingestion and respiration rates. Coherently, the maximal scope for growth and tissue dry weight were observed in mussels exposed to the pH reduction delta pH=-0.6, suggesting that M. galloprovincialis could be tolerant to CO2 acidification, at least in the highly alkaline coastal waters of Ria Formosa (SW Portugal).