Seawater carbonate chemistry and acid–base parameters, metabolic rate and health indicators of Mytilus edulis ...

• Main Authors: Mangan, Stephanie, Urbina, Mauricio A, Findlay, Helen S, Wilson, Rod W, Lewis, Ceri N
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Acid-base regulation; Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Laboratory experiment; Mollusca; Mytilus edulis; North Atlantic; Other; Other studied parameter or process; Respiration; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment duration; Time in hours; Haemolymph, pH; Haemolymph, pH, standard error; Haemolymph, partial pressure of carbon dioxide; Haemolymph, partial pressure of carbon dioxide, standard error; Haemolymph, bicarbonate ion; Haemolymph, bicarbonate ion, standard error; pH; Metabolic rate of oxygen; Metabolic rate of oxygen, standard error; Treatment; Superoxide dismutase activity, unit per protein mass; Superoxide dismutase activity, standard error; Thiobarbituric acid reactive substances; Thiobarbituric acid reactive substances, standard error; Neutral red retention, per protein; Neutral red retention per protein, stanard error; Temperature, water; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; pH, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.890223; https://doi.pangaea.de/10.1594/PANGAEA.890223

Ocean acidification (OA) studies typically use stable open-ocean pH or CO2 values. However, species living within dynamic coastal environments can naturally experience wide fluctuations in abiotic factors, suggesting their responses to stable pH conditions may not be reflective of either present or near-future conditions. Here we investigate the physiological responses of the mussel Mytilus edulis to variable seawater pH conditions over short- (6 h) and medium-term (2 weeks) exposures under both current and near-future OA scenarios. Mussel haemolymph pH closely mirrored that of seawater pH over short-term changes of 1 pH unit with acidosis or recovery accordingly, highlighting a limited capacity for acid–base regulation. After 2 weeks, mussels under variable pH conditions had significantly higher metabolic rates, antioxidant enzyme activities and lipid peroxidation than those exposed to static pH under both current and near-future OA scenarios. Static near-future pH conditions induced significant acid–base ... : 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 2018-05-23. ...