Seawater carbonate chemistry and gene expression levels of the limpet Nacella concinna ...

• Main Authors: de Aranzamendi, M C, Servetto, Natalia, Movilla, Juancho, Bettencourt, Raul, Sahade, Ricardo José
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Animalia; Antarctic; Benthic animals; Benthos; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Gene expression incl. proteomics; Laboratory experiment; Mollusca; Nacella concinna; Polar; Single species; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment duration; Ecotype; Gene name; Experiment day; Gene expression, fold change, relative; Comment; Alkalinity, total; Alkalinity, total, standard deviation; pH; pH, standard deviation; Temperature, water; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Dry air column-averaged mixing ratio of carbon dioxide; Dry air column-averaged mixing ratio of carbon dioxide, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Carbonate system computation flag; Fugacity of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide in seawater, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Experiment; Antarc*; Antarctica; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.930756; https://doi.pangaea.de/10.1594/PANGAEA.930756

Ocean acidification (OA) could become a serious threat for the Antarctic marine ecosystem over coming years, as the solubility of atmospheric CO2 and CaCO3 minerals increases at lower temperatures. We evaluated the effect of OA on the stress response of the limpet Nacella concinna by measuring gene expression levels. The experiment was performed with the two ecotypes (Littoral and Sublittoral) of the species during 54 days (IPCC, 2019 scenario RCP8.5; control, 375 ppm; low-pH treatment, 923 ppm). Exposure to low-pH treatment during 15 days triggered the down-regulation of two heat-shock protein genes (HSP70A, HSP70B) only in sublittoral individuals. Little variation in the relative expression values of all genes in both ecotypes was observed probably, due to a historical exposure to the substantial daily natural pH fluctuations recorded in the study area during the experiment. This study provides relevant baseline data for future OA experiments on coastal species in Antarctica. ... : 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 2021-04-19. ...