Seawater carbonate chemistry and blood acid-base balance and other blood parameters of demersal shark species Haploblepharus edwardsii
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2019
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| _version_ | 1867171017596600320 |
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| author | Dziergwa, Jacqueline Singh, Sarika Bridges, Christopher R Kerwath, Sven Enax, Joachim Auerswald, Lutz |
| author_facet | Dziergwa, Jacqueline Singh, Sarika Bridges, Christopher R Kerwath, Sven Enax, Joachim Auerswald, Lutz |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Global ocean acidification is expected to chronically lower the pH to 7.3 (>2200 µatm seawater pCO2) by the year 2300. Acute hypercapnia already occurs along the South African west and south coasts due to upwelling- and low-oxygen events, with increasing frequency. In the present project we investigated the impact of hypercapnia on the endemic demersal shark species Haploblepharus edwardsii. Specifically, we experimentally analysed acid-base regulation during acute and chronic hypercapnia, the effects of chronic hypercapnia on growth rates and on denticle structure- and composition. While H. edwardsii are physiologically well adapted to acute and chronic hypercapnia, we observed, for the first time, denticle corrosion as a result of chronic exposure. We conclude that denticle corrosion could increase denticle turnover and compromise hydrodynamics and skin protection. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_911397 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and blood acid-base balance and other blood parameters of demersal shark species Haploblepharus edwardsii Dziergwa, Jacqueline Singh, Sarika Bridges, Christopher R Kerwath, Sven Enax, Joachim Auerswald, Lutz Acid-base regulation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthos; Bicarbonate; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcite saturation state; Calcium; Calcium, standard deviation; Calcium ion; Calcium ion, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Chlorine; Chlorine, standard deviation; Chordata; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); EXP; Experiment; False_Bay; Fluorine; Fluorine, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gold; Gold, standard deviation; Haematocrit; Haematocrit, standard deviation; Haemolymph, bicarbonate ion + carbonate ion; Haemolymph, bicarbonate ion + carbonate ion, standard error; Haemolymph, calcium ion; Haemolymph, magnesium ion; Haemolymph, partial pressure of carbon dioxide; Haemolymph, pH; Haemolymph, pH, standard deviation; Haploblepharus edwardsii; Laboratory experiment; Magnesium; Magnesium, standard deviation; Magnesium ion; Magnesium ion, standard deviation; Nekton; Nitrogen; Nitrogen, standard deviation; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Oxygen; Oxygen, standard deviation; Oxygen saturation; Oxygen saturation, standard deviation; Palladium; Palladium, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, NBS scale; pH, standard deviation; pH, total scale; Phosphorus; Phosphorus, standard deviation; Potentiometric; Potentiometric titration; Ratio; Ratio, standard deviation; Registration number of species; Replicates; Salinity; Salinity, standard deviation; Single species; Sodium; Sodium, standard deviation; South Atlantic; Species; Temperate; Temperature, water; Temperature, water, standard deviation; Time in hours; Time in weeks; Treatment; Type; Uniform resource locator/link to reference Global ocean acidification is expected to chronically lower the pH to 7.3 (>2200 µatm seawater pCO2) by the year 2300. Acute hypercapnia already occurs along the South African west and south coasts due to upwelling- and low-oxygen events, with increasing frequency. In the present project we investigated the impact of hypercapnia on the endemic demersal shark species Haploblepharus edwardsii. Specifically, we experimentally analysed acid-base regulation during acute and chronic hypercapnia, the effects of chronic hypercapnia on growth rates and on denticle structure- and composition. While H. edwardsii are physiologically well adapted to acute and chronic hypercapnia, we observed, for the first time, denticle corrosion as a result of chronic exposure. We conclude that denticle corrosion could increase denticle turnover and compromise hydrodynamics and skin protection. |
| title | Seawater carbonate chemistry and blood acid-base balance and other blood parameters of demersal shark species Haploblepharus edwardsii |
| topic | Acid-base regulation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthos; Bicarbonate; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcite saturation state; Calcium; Calcium, standard deviation; Calcium ion; Calcium ion, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Chlorine; Chlorine, standard deviation; Chordata; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); EXP; Experiment; False_Bay; Fluorine; Fluorine, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gold; Gold, standard deviation; Haematocrit; Haematocrit, standard deviation; Haemolymph, bicarbonate ion + carbonate ion; Haemolymph, bicarbonate ion + carbonate ion, standard error; Haemolymph, calcium ion; Haemolymph, magnesium ion; Haemolymph, partial pressure of carbon dioxide; Haemolymph, pH; Haemolymph, pH, standard deviation; Haploblepharus edwardsii; Laboratory experiment; Magnesium; Magnesium, standard deviation; Magnesium ion; Magnesium ion, standard deviation; Nekton; Nitrogen; Nitrogen, standard deviation; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Oxygen; Oxygen, standard deviation; Oxygen saturation; Oxygen saturation, standard deviation; Palladium; Palladium, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, NBS scale; pH, standard deviation; pH, total scale; Phosphorus; Phosphorus, standard deviation; Potentiometric; Potentiometric titration; Ratio; Ratio, standard deviation; Registration number of species; Replicates; Salinity; Salinity, standard deviation; Single species; Sodium; Sodium, standard deviation; South Atlantic; Species; Temperate; Temperature, water; Temperature, water, standard deviation; Time in hours; Time in weeks; Treatment; Type; Uniform resource locator/link to reference |
| url | https://doi.org/10.1594/PANGAEA.911397 |