Seawater carbonate chemistry and metabolic rates, bloodbased metrics in newborn blacktip reef sharks ...

• Main Authors: Rummer, Jodie L, Bouyoucos, Ian A, Mourier, Johann, Nakamura, Nao, Planes, Serge
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Animalia; Carcharhinus melanopterus; Chordata; Coast and continental shelf; Laboratory experiment; Mesocosm or benthocosm; Nekton; Other studied parameter or process; Pelagos; Respiration; Single species; South Pacific; Tropical; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment duration; Identification; Treatment; Haematocrit; Haemoglobin; Mean corpuscular haemoglobin concentration; pH; Lactate; Metabolic rate, maximum; Metabolic rate, standard; Absolute aerobic scope; Mass; Temperature, water; Mass, standard deviation; Length; Length, standard deviation; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; pH, 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; Potentiometric; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.926819; https://doi.pangaea.de/10.1594/PANGAEA.926819

Anthropogenic ocean acidification (OA) is a threat to coral reef fishes, but few studies have investigated responses of high-trophic-level predators, including sharks. We tested the effects of 72-hr exposure to OA-relevant elevated partial pressures of carbon dioxide (pCO2) on oxygen uptake rates, acid–base status, and haematology of newborn tropical blacktip reef sharks (Carcharhinus melanopterus). Acute exposure to end-of-century pCO2 levels resulted in elevated haematocrit (i.e. stress or compensation of oxygen uptake rates) and blood lactate concentrations (i.e. prolonged recovery) in the newborns. Conversely, whole blood and mean corpuscular haemoglobin concentrations, blood pH, estimates of standard and maximum metabolic rates, and aerobic scope remained unaffected. Taken together, newborn blacktip reef sharks appear physiologically robust to end-of-century pCO2 levels, but less so than other, previously investigated, tropical carpet sharks. Our results suggest peak fluctuating pCO2 levels in coral ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2020) 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 2020-12-25. ...