Seawater carbonate chemistry and reproductive characteristics, Oxidative stress and energy metabolism related biomarkers of Gobiusculus flavescens, supplement to: Faria, Ana M; Lopes, Ana F; Silva, Cátia S E; Novais, Sara C; Lemos, Marco F L; Gonçalves, Emanuel J (2018): Reproductive trade-offs in a temperate reef fish under high p CO 2 levels. Marine Environmental Research, 137, 8-15

• Main Authors: Faria, Ana M, Lopes, Ana F, Silva, Cátia S E, Novais, Sara C, Lemos, Marco F L, Gonçalves, Emanuel J
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2018
• Subjects: Animalia; Chordata; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Gobiusculus flavescens; Laboratory experiment; Nekton; North Atlantic; Other metabolic rates; Other studied parameter or process; Pelagos; Reproduction; FOS Medical biotechnology; Single species; Temperate; Type; Species; Registration number of species; Uniform resource locator/link to reference; Identification; Treatment; Clutches per pair; Batch; Eggs; Eggs area; Reproductive output per clutch; Larvae; Length, standard; Sex; Reactive oxygen species, per wet mass; Lipid peroxidation, per wet mass; Catalase activity, per protein mass; Superoxide dismutase activity, unit per protein mass; DNA damage, per wet mass; Isocitrate dehydrogenase activity, per protein mass; Lactate dehydrogenase activity, per protein mass; Carbohydrates, per wet mass; Lipid; Protein; Available energy, per wet mass; Energy consumption, per wet mass; pH; pH, standard deviation; Temperature, water; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; Experiment; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.900449; https://doi.pangaea.de/10.1594/PANGAEA.900449

Fishes are currently facing novel types of anthropogenic stressors that have never experienced in their evolutionary history, such as ocean acidification. Under these stressful conditions, energetically costly processes, such as reproduction, may be sacrificed for increased chances of survival. This trade-off does not only affect the organism itself but may result in reduced offspring fitness. In the present study, the effects of exposure to high pCO2 levels were tested on the reproductive performance of a temperate species, the two-spotted goby, Gobiusculus flavescens. Breeding pairs were kept under control (600 μatm, pH 8.05) and high pCO2 levels (2300 μatm, pH 7.60) conditions for a 4-month period. Additionally, oxidative stress and energy metabolism-related biomarkers were measured. Results suggest that reproductive activity is stimulated under high pCO2 levels. Parental pairs in the simulated ocean acidification conditions exhibited increased reproductive output, with 50% more clutches and 44% more eggs per clutch than pairs under control conditions. However, there was an apparent trade-off between offspring number and size, as larvae of parental pairs under high pCO2 levels hatched significantly smaller, suggesting differences in parental provisioning, which could be related to the fact that these females produce more eggs. Moreover, results support the hypothesis of different energy allocation strategies used by females under high pCO2 conditions. These changes might, ultimately, affect individual fitness and population replenishment. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2019-04-15.