Publication Date:
2024-03-15
Description:
Common sea stars (Asterias rubens) are at risk of physiological stress and decline with projected shifts in oceanic conditions. This study assessed changes in coelomic fluid (CF) blood gases, electrolytes, osmolality, and coelomocyte counts in adult common sea stars after exposure to stressors mimicking effects from climate change for 14 days, including decreased pH (−0.4 units, mean: 7.37), hypoxia (target dissolved oxygen ~1.75 mg O2/L, mean: 1.80 mg O2/L), or increased temperature (+10 °C, mean: 17.2 °C) and compared sea star CF electrolytes and osmolality to tank water. Changes in CF blood gases, electrolytes, and/or coelomocyte counts occurred in all treatment groups after stressor exposures, indicating adverse systemic effects with evidence of increased energy expenditure, respiratory or metabolic derangements, and immunosuppression or inflammation. At baseline, CF potassium and osmolality of all groups combined were significantly higher than tank water, and, after exposures, CF potassium was significantly higher in the hypoxia group as compared to tank water. These findings indicate physiological challenges for A. rubens after stressor exposures and, given increased observations of sea star wasting events globally, this provides evidence that sea stars as a broad group are particularly vulnerable to changing oceans.
Keywords:
Acid-base regulation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Asterias rubens; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass/Abundance/Elemental composition; Calcite saturation state; Calcite saturation state, standard deviation; Calcium; Calcium, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Chloride; Chloride, standard deviation; Coelomic fluid, bicarbonate ion; Coelomic fluid, bicarbonate ion, standard deviation; Coelomic fluid, partial pressure of carbon dioxide; Coelomic fluid, partial pressure of carbon dioxide, standard deviation; Coelomic fluid, partial pressure of oxygen; Coelomic fluid, partial pressure of oxygen, standard deviation; Coelomic fluid, pH; Coelomic fluid, pH, standard deviation; Containers and aquaria (20-1000 L or 〈 1 m**2); Echinodermata; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Laboratory experiment; Laboratory strains; Magnesium; Magnesium, standard deviation; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Osmolality; Osmolality, standard deviation; Other studied parameter or process; Oxygen; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Potassium; Potassium, standard deviation; Salinity; Single species; Sodium; Sodium, standard deviation; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Temperature; Temperature, water; Time point, descriptive; Total coelomocyte count; Total coelomocyte count, standard deviation; Treatment; Type; Type of study
Type:
Dataset
Format:
text/tab-separated-values, 538 data points
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