Seawater carbonate chemistry and larval feeding efficiency and change food selectivity in the mollusk Concholepas concholepas ...

• Main Authors: Vargas, Cristian A, de la Hoz, Makarena, Aguilera, Victor M, San Martín, Valeska, Manríquez, Patricio H, Navarro, Jorge M, Torres, Rodrigo, Lardies, Marco A, Lagos, Nelson A
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: Animalia; Behaviour; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Concholepas concholepas; Laboratory experiment; Mollusca; North Pacific; Pelagos; Single species; Temperate; Zooplankton; Event label; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Experiment; Season; Partial pressure of carbon dioxide water at sea surface temperature wet air; Clearance rate per individual; Ingestion rate; Replicates; Prey taxa; Ingestion rate of carbon per day per individual; Biomass; Percentage; Temperature, water; Temperature, water, standard error; Salinity; Salinity, standard error; pH; pH, standard error; Alkalinity, total; Alkalinity, total, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Carbonate ion; Carbonate ion, standard error; Aragonite saturation state; Aragonite saturation state, standard error; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbon, inorganic, dissolved; Calcite saturation state; Potentiometric; Potentiometric titration; Calculated using CO2SYS; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.950467; https://doi.pangaea.de/10.1594/PANGAEA.950467

We present experimental data obtained from an experiment with newly hatched veliger larvae of the gastropod Concholepas concholepas exposed to three pCO2 levels. Egg capsules were collected from two locations in northern and central Chile, and then incubated throughout their entire intra-capsular life cycle at three nominal pCO2 levels, 400, 700 and 1000 ppm (i.e. corresponding to 8.0, 7.8 and 7.6 pH units, respectively). Hatched larvae were fed with natural food assemblages. Food availability at time zero did not vary significantly with pCO2 level. Our results clearly showed a significant effect of elevated pCO2 on the intensity of larval feeding, which dropped by >60%. Incubation also showed that pCO2-driven ocean acidification (OA) may radically impact the selectivity of ingested food by C. concholepas larvae. Results also showed that larvae switched their clearance rate based on large cells, such as diatoms and dinoflagellates to tiny and highly abundant nanoflagellates and cyanobacteria as pCO2 ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 2022-11-03. ...