Effects of ocean acidification on respiration, growth and C:N ratio of arctic Hyas araneus larvae, supplement to: Schiffer, Melanie; Harms, Lars; Pörtner, Hans-Otto; Lucassen, Magnus; Mark, Felix Christopher; Storch, Daniela (2012): Tolerance of Hyas araneus zoea I larvae to elevated seawater PCO2 despite elevated metabolic costs. Marine Biology, 160(8), 1943-1953

• Main Authors: Schiffer, Melanie, Harms, Lars, Pörtner, Hans-Otto, Lucassen, Magnus, Mark, Felix Christopher, Storch, Daniela
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2013
• Subjects: Animalia; Arctic; Arthropoda; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Growth/Morphology; Hyas araneus; Laboratory experiment; Mortality/Survival; Pelagos; Polar; Respiration; Single species; Zooplankton; Species; Figure; Partial pressure of carbon dioxide water at sea surface temperature wet air; Incubation duration; Larvae; Larvae, dead; Respiration rate, oxygen, per individual; Dry mass per individual; Carbon content per individual; Nitrogen content per individual; Salinity; Temperature, water; Temperature, water, standard deviation; pH; pH, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Partial pressure of carbon dioxide, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Calcite saturation state; Experiment; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. 2010; Biological Impacts of Ocean Acidification BIOACID; Ocean Acidification International Coordination Centre OA-ICC; Svalbard; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.833060; https://doi.pangaea.de/10.1594/PANGAEA.833060

Early life stages of marine crustaceans respond sensitively to elevated seawater PCO2. However, the underlying physiological mechanisms have not been studied well. We therefore investigated the effects of elevated seawater PCO2 on oxygen consumption, dry weight, elemental composition, median developmental time (MDT) and mortality in zoea I larvae of the spider crab Hyas araneus (Svalbard 79°N/11°E; collection, May 2009; hatch, December 2009). At the time of moulting, oxygen consumption rate had reached a steady state level under control conditions. In contrast, elevated seawater PCO2 caused the metabolic rate to rise continuously leading to a maximum 1.5-fold increase beyond control level a few days before moulting into the second stage (zoea II), followed by a pronounced decrease. Dry weight of larvae reared under high CO2 conditions was lower than in control larvae at the beginning of the moult cycle, yet this difference had disappeared at the time of moulting. MDT of zoea I varied between 45 ± 1 days under control conditions and 42 ± 2 days under the highest seawater CO2 concentration. The present study indicates that larval development under elevated seawater PCO2 levels results in higher metabolic costs during premoulting events in zoea I. However, H. araneus zoea I larvae seem to be able to compensate for higher metabolic costs as larval MDT and survival was not affected by elevated PCO2 levels. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 is 2014-05-28.