Publication Date:
2024-03-15
Description:
Although copepods have been considered tolerant against the direct influence of the ocean acidification (OA) projected for the end of the century, some recent studies have challenged this view. Here, we have examined the direct impact of short-term exposure to a pCO2/pH level relevant for the year 2100 (pHNBS, control: 8.18, low pH: 7.78), on the physiological performance of two representative marine copepods: the calanoid Acartia grani and the cyclopoid Oithona davisae. Adults of both species, from laboratory cultures, were preconditioned for four consecutive days in algal suspensions (Akashiwo sanguinea) prepared with filtered sea water pre-adjusted to the targeted pH values via CO2 bubbling. We measured the feeding and respiratory activity and reproductive output of those pre-conditioned females. The largely unaffected fatty acid composition of the prey offered between OA treatments and controls supports the absence in the study of indirect OA effects (i.e. changes of food nutritional quality). Our results show no direct effect of acidification on the vital rates examined in either copepod species. Our findings are compared with results from previous short- and long-term manipulative experiments on other copepod species.
Keywords:
Acartia grani; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Arthropoda; Behaviour; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using CO2SYS; 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; Clearance rate; Dry air column-averaged mixing ratio of carbon dioxide; Dry air column-averaged mixing ratio of carbon dioxide, standard deviation; Egg production rate per female; Eggs per clutch; Fatty acid composition; Fatty acid content; Fatty acid content, standard deviation; Fatty acids, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Group; Ingestion rate per individual; Laboratory experiment; Laboratory strains; Mediterranean Sea; OA-ICC; Ocean Acidification International Coordination Centre; Oithona davisae; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH, standard deviation; Potentiometric; Potentiometric titration; Registration number of species; Reproduction; Respiration; Respiration rate, oxygen, per individual; Salinity; Single species; Species; Temperature, water; Time in hours; Treatment; Type; Uniform resource locator/link to reference; Zooplankton
Type:
Dataset
Format:
text/tab-separated-values, 2908 data points
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