Seawater carbonate chemistry and larval feeding physiology of the mussel Mytilus californianus ...

• Main Authors: Gray, Matthew W, Langdon, Chris, Waldbusser, George G, Hales, Burke, Kramer, Sean
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Animalia; Behaviour; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Laboratory experiment; Mollusca; Mytilus californianus; North Pacific; Pelagos; Single species; Temperate; Zooplankton; Type of study; Species, unique identification; Treatment; Replicate; Larvae; Partial pressure of carbon dioxide water at sea surface temperature wet air; Calcite saturation state; pH; Salinity; Temperature, water; Feeding rate; Number; Gut fullness, total beads per larva; Size; Ingestion rate per larva; Ingestion rate per larva, size standardized; Gut fullness, size standardized; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Alkalinity, total; Aragonite saturation state; Experiment; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.958047; https://doi.pangaea.de/10.1594/PANGAEA.958047

Ocean acidification (OA)—a process describing the ocean's increase in dissolved carbon dioxide ( pCO2) and a reduction in pH and aragonite saturation state (Ωar) due to higher concentrations of atmospheric CO2—is considered a threat to bivalve mollusks and other marine calcifiers. While many studies have focused on the effects of OA on shell formation and growth, we present findings on the separate effects of pCO2, Ωar, and pH on larval feeding physiology (initiation of feeding, gut fullness, and ingestion rates) of the California mussel Mytilus californianus. We found that elevated pCO2 delays initiation of feeding, while gut fullness and ingestion rates were best predicted by Ωar; however, pH was not found to have a significant effect on these feeding processes under the range of OA conditions tested. We also modeled how OA impacts on initial shell development and how feeding physiology might subsequently affect larval energy budget components (e.g. scope for growth) and developmental rate to 260 µm shell ... : 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 2023-04-26. ...