Effects of pre-hatching pCO2 on development and survival of zoea stages of Arctic spider crab Hyas araneus

• Main Authors: Schiffer, Melanie, Harms, Lars, Pörtner, Hans-Otto, Mark, Felix Christopher, Storch, Daniela
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Alkalinity; total; Animalia; Aragonite saturation state; Arctic; Arthropoda; Bicarbonate ion; BIOACID; Biological Impacts of Ocean Acidification; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon; inorganic; dissolved; standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Development; Dry mass per individual; Duration; number of days; EXP; Experiment; Feeding rate per individual; Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Heart beat rate; Hyas araneus; Incubation duration; Kongsfjorden_OA; Kongsfjorden; Spitsbergen; Laboratory experiment; Larvae; dead; Maxilliped beat rate; Mortality/Survival; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide; Kongsfjord*; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.833067; https://doi.org/10.1594/PANGAEA.833067

Sensitivity of marine crustaceans to anthropogenic CO2 emissions and the associated acidification of the oceans may be less than that of other, especially lower, invertebrates. However, effects on critical transition phases or carry-over effects between life stages have not comprehensively been explored. Here we report the impact of elevated seawater PCO2 values (3100 µatm) on Hyas araneus during the last 2 weeks of their embryonic development (pre-hatching phase) and during development while in the consecutive zoea I and zoea II larval stages (post-hatching phase). We measured oxygen consumption, dry weight, developmental time and mortality in zoea I to assess changes in performance. Feeding rates and survival under starvation were investigated at different temperatures to detect differences in thermal sensitivities of zoea I and zoea II larvae depending on pre-hatch history. When embryos were pre-exposed to elevated PCO2 during maternal care, mortality increased about 60% under continued CO2 exposure during the zoea I phase. The larvae that moulted into zoea II, displayed a developmental delay by about 20 days compared to larvae exposed to control PCO2 during embryonic and zoeal phases. Elevated PCO2 caused a reduction in zoea I dry weight and feeding rates, while survival of the starved larvae was not affected by the seawater CO2 concentration. In conclusion, CO2 effects on egg masses under maternal care carried over to the first larval stages of crustaceans and reduced their survival and development to levels below those previously reported in studies exclusively focussing on acute PCO2 effects on the larval stages.