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  • 1
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    Seawater carbonate chemistry and sex determination in the Sydney rock oyster, Saccostrea glomerata (2018)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Whether sex determination of marine organisms can be altered by ocean acidification and warming during this century remains a significant, unanswered question. Here, we show that exposure of the protandric hermaphrodite oyster, Saccostrea glomerata to ocean acidification, but not warming, alters sex determination resulting in changes in sex ratios. After just one reproductive cycle there were 16% more females than males. The rate of gametogenesis, gonad area, fecundity, shell length, extracellular pH and survival decreased in response to ocean acidification. Warming as a sole stressor slightly increased the rate of gametogenesis, gonad area and fecundity, but this increase was masked by the impact of ocean acidification at a level predicted for this century. Alterations to sex determination, sex ratios and reproductive capacity will have flow on effects to reduce larval supply and population size of oysters and potentially other marine organisms.
    Keywords: Acid-base regulation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); Day of experiment; Egg size; Fecundity; Female; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gonadal stage; Gonad area; Growth/Morphology; Individuals; Laboratory experiment; Lipids per egg; Male; Mollusca; Mortality; Mortality/Survival; OA-ICC; Ocean Acidification International Coordination Centre; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, extracellular; pH, standard deviation; Potentiometric; Potentiometric titration; Registration number of species; Replicate; Reproduction; Saccostrea glomerata; Salinity; Salinity, standard deviation; Shell length; Single species; South Pacific; Spawned lipids per gonad; Spawning rate; Species; Temperate; Temperature; Temperature, water; Temperature, water, standard deviation; Treatment; Type; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 10452 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Seawater carbonate chemistry and larvae survival, metabolic rate of oyster Saccostrea glomerata in laboratory experiment (2017)
    PANGAEA
    In:  Supplement to: Parker, Laura M; O'Connor, Wayne A; Byrne, Maria; Coleman, Ross A; Virtue, Patti; Dove, Michael; Gibbs, Mitchell; Spohr, Lorraine; Scanes, Elliot; Ross, Pauline M (2017): Adult exposure to ocean acidification is maladaptive for larvae of the Sydney rock oyster Saccostrea glomerata in the presence of multiple stressors. Biology Letters, 13(2), 20160798, https://doi.org/10.1098/rsbl.2016.0798
    Details
    Publication Date: 2024-03-15
    Description: Parental effects passed from adults to their offspring have been identified as a source of rapid acclimation that may allow marine populations to persist as our surface oceans continue to decrease in pH. Little is known, however, whether parental effects are beneficial for offspring in the presence of multiple stressors. We exposed adults of the oyster Saccostrea glomerata to elevated CO2 and examined the impacts of elevated CO2 (control = 392; 856 µatm) combined with elevated temperature (control = 24; 28°C), reduced salinity (control = 35; 25) and reduced food concentration (control = full; half diet) on their larvae. Adult exposure to elevated CO2 had a positive impact on larvae reared at elevated CO2 as a sole stressor, which were 8% larger and developed faster at elevated CO2 compared with larvae from adults exposed to ambient CO2 These larvae, however, had significantly reduced survival in all multistressor treatments. This was particularly evident for larvae reared at elevated CO2 combined with elevated temperature or reduced food concentration, with no larvae surviving in some treatment combinations. Larvae from CO2-exposed adults had a higher standard metabolic rate. Our results provide evidence that parental exposure to ocean acidification may be maladaptive when larvae experience multiple stressors.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); Egg size; Egg size, standard error; EXP; Experiment; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Hastings_river; Identification; Laboratory experiment; Larval stages; Lipids; Metabolic rate of oxygen per individual; Mollusca; Mortality/Survival; OA-ICC; Ocean Acidification International Coordination Centre; Other; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Range; Registration number of species; Replicate; Reproduction; Saccostrea glomerata; Salinity; Shell length; Single species; South Pacific; Species; Survival; Temperature; Temperature, water; Treatment; Type; Uniform resource locator/link to reference; Variance
    Type: Dataset
    Format: text/tab-separated-values, 3516 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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