Seawater carbonate chemistry and exoskeletal properties in post-terminal-molt female snow crab Chionoecetes opilio

• Main Authors: Algayer, Tait, Mahmoud, Ahmed, Saksena, Sanjana, Long, W Christopher, Swiney, Katherine M, Foy, Robert J, Steffel, Brittan V, Smith, Kathryn E, Aronson, Richard B, Dickinson, Gary H
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Alkalinity; total; Animalia; Aragonite saturation state; Arthropoda; Benthic animals; Benthos; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcite saturation state; Calcium; Calculated using seacarb after Nisumaa et al. (2010); Carbon; inorganic; dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chionecetes opilio; Coast and continental shelf; Comment; Containers and aquaria (20-1000 L or < 1 m**2); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Laboratory experiment; Magnesium; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Polar; Position; Salinity; Single species; Species; unique identification; unique identification (Semantic URI); unique identification (URI); Strontium; Temperature; water; Thickness; Treatment: pH; Type of study; Vickers Hardness; Pacific; Chionoecetes opilio; Ocean acidification; Snow crab
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.963705; https://doi.org/10.1594/PANGAEA.963705

We examined the effect of long-term (2 year) exposure to decreased seawater pH (7.8 and 7.5, PCO2 ~ 760 and 1550 µatm, respectively) on exoskeletal properties in post-terminal-molt female Chionoecetes opilio. Since the effects of OA vary among body regions in decapods, exoskeletal properties (microhardness, thickness, and elemental composition) were measured in five body regions: the carapace, both claws, and both third walking legs.