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Bibliographic Details
Main Authors: Challener, Roberta C, Watts, Stephen A, McClintock, James B
Format: Dataset Open Access
Language:en
Published: PANGAEA 2014
Subjects:
Absolute lipid content; Absolute protein content; Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Ash; Ash mass; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calcite saturation state, standard error; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbohydrates; Carbohydrates mass; Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Diameter; Digestibility; Dry mass; Echinodermata; Energy; Energy, per food mass; EXP; Experiment; Fecal production rate; Feces, dry, total; Feed, dry, total; Feeding rate; Figure; Food mass; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Incubation duration; Inorganic matter; Laboratory experiment; Lipids; Lytechinus variegatus; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Organic matter; Oxygen; Oxygen, standard error; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH, NBS scale; pH, standard error; pH, total scale; Potentiometric; Potentiometric titration; Proteins; Saint_Joseph_Bay; Salinity; Salinity, standard error; Single species; Species; Table; Temperate; Temperature, water; Temperature, water, standard error; Treatment; Wet mass
Online Access:https://doi.org/10.1594/PANGAEA.835643
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Table of Contents:
  • Land-based aquaculture facilities experience occasional hypercapnic conditions due to the accumulation of the metabolic waste product carbon dioxide. Pre-gonadal Lytechinus variegatus (horizontal diameter=20 mm) were exposed to control (608 µatm pCO2, pH 8.1) or hypercapnic conditions (1738 µatm pCO2, pH 7.7) in synthetic seawater for 14 weeks. Sea urchins exposed to hypercapnic conditions exhibited significantly slower growth (reduced dry matter production), primarily due to reduced test production. Higher fecal production rates and lower ash absorption efficiency (%) in individuals exposed to hypercapnic conditions suggest the ability to process or retain dietary carbonates may have been affected. Significant increases in neutral lipid storage in the gut and increased soluble protein storage in the gonads of individuals exposed to hypercapnic conditions suggest alterations in nutrient metabolism and storage. Furthermore, organic production and energy allocation increased in the lantern of those individuals exposed to hypercapnic conditions. These results suggest chronic exposure to hypercapnic conditions alters nutrient allocation to organ systems and functions, leading to changes in somatic and reproductive production.

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