Acid-base balance and changes in haemolymph properties of the South African rock lobsters, Jasus lalandii, a palinurid decapod, during chronic hypercapnia
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2015
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| _version_ | 1867171836101394432 |
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| author | Knapp, Jarred L Bridges, Christopher R Krohn, Janina Hoffman, Louwrens C Auerswald, Lutz |
| author_facet | Knapp, Jarred L Bridges, Christopher R Krohn, Janina Hoffman, Louwrens C Auerswald, Lutz |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Few studies exist reporting on long-term exposure of crustaceans to hypercapnia. We exposed juvenile South African rock lobsters, Jasus lalandii, to hypercapnic conditions of pH 7.3 for 28 weeks and subsequently analysed changes in the extracellular fluid (haemolymph). Results revealed, for the first time, adjustments in the haemolymph of a palinurid crustacean during chronic hypercapnic exposure: 1) acid-base balance was adjusted and sustained by increased bicarbonate and 2) quantity and oxygen binding properties of haemocyanin changed. Compared with lobsters kept under normocapnic conditions (pH 8.0), during prolonged hypercapnia, juvenile lobsters increased bicarbonate buffering of haemolymph. This is necessary to provide optimum pH conditions for oxygen binding of haemocyanin and functioning of respiration in the presence of a strong Bohr Effect. Furthermore, modification of the intrinsic structure of the haemocyanin molecule, and not the presence of molecular modulators, seems to improve oxygen affinity under conditions of elevated pCO2. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_847479 |
| institution | PANGAEA |
| language | en |
| publishDate | 2015 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Acid-base balance and changes in haemolymph properties of the South African rock lobsters, Jasus lalandii, a palinurid decapod, during chronic hypercapnia Knapp, Jarred L Bridges, Christopher R Krohn, Janina Hoffman, Louwrens C Auerswald, Lutz Acid-base regulation; Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Arthropoda; Benthic animals; Benthos; Bicarbonate; Bicarbonate ion; Bicarbonate ion, standard error; BIOACID; Biological Impacts of Ocean Acidification; Bohr Coefficient; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate ion, standard error; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Haemolymph, bicarbonate ion; Haemolymph, bicarbonate ion, standard error; Haemolymph, calcium ion; Haemolymph, calcium ion, standard error; Haemolymph, haemocyanin; Haemolymph, haemocyanin, standard error; Haemolymph, lactate; Haemolymph, lactate, standard error; Haemolymph, magnesium ion; Haemolymph, magnesium ion, standard error; Haemolymph, partial pressure of carbon dioxide; Haemolymph, partial pressure of carbon dioxide, standard error; Haemolymph, partial pressure of oxygen; Haemolymph, pH; Haemolymph, pH, standard error; Haemolymph, total carbon dioxide; Haemolymph, total carbon dioxide, standard error; Hill coefficient; Jasus lalandii; Laboratory experiment; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH, NBS scale; pH, standard error; pH, total scale; Potentiometric; Salinity; Salinity, standard error; Single species; South Atlantic; Species; Temperate; Temperature, water; Temperature, water, standard error; Treatment Few studies exist reporting on long-term exposure of crustaceans to hypercapnia. We exposed juvenile South African rock lobsters, Jasus lalandii, to hypercapnic conditions of pH 7.3 for 28 weeks and subsequently analysed changes in the extracellular fluid (haemolymph). Results revealed, for the first time, adjustments in the haemolymph of a palinurid crustacean during chronic hypercapnic exposure: 1) acid-base balance was adjusted and sustained by increased bicarbonate and 2) quantity and oxygen binding properties of haemocyanin changed. Compared with lobsters kept under normocapnic conditions (pH 8.0), during prolonged hypercapnia, juvenile lobsters increased bicarbonate buffering of haemolymph. This is necessary to provide optimum pH conditions for oxygen binding of haemocyanin and functioning of respiration in the presence of a strong Bohr Effect. Furthermore, modification of the intrinsic structure of the haemocyanin molecule, and not the presence of molecular modulators, seems to improve oxygen affinity under conditions of elevated pCO2. |
| title | Acid-base balance and changes in haemolymph properties of the South African rock lobsters, Jasus lalandii, a palinurid decapod, during chronic hypercapnia |
| topic | Acid-base regulation; Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Arthropoda; Benthic animals; Benthos; Bicarbonate; Bicarbonate ion; Bicarbonate ion, standard error; BIOACID; Biological Impacts of Ocean Acidification; Bohr Coefficient; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate ion, standard error; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Haemolymph, bicarbonate ion; Haemolymph, bicarbonate ion, standard error; Haemolymph, calcium ion; Haemolymph, calcium ion, standard error; Haemolymph, haemocyanin; Haemolymph, haemocyanin, standard error; Haemolymph, lactate; Haemolymph, lactate, standard error; Haemolymph, magnesium ion; Haemolymph, magnesium ion, standard error; Haemolymph, partial pressure of carbon dioxide; Haemolymph, partial pressure of carbon dioxide, standard error; Haemolymph, partial pressure of oxygen; Haemolymph, pH; Haemolymph, pH, standard error; Haemolymph, total carbon dioxide; Haemolymph, total carbon dioxide, standard error; Hill coefficient; Jasus lalandii; Laboratory experiment; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH, NBS scale; pH, standard error; pH, total scale; Potentiometric; Salinity; Salinity, standard error; Single species; South Atlantic; Species; Temperate; Temperature, water; Temperature, water, standard error; Treatment |
| url | https://doi.org/10.1594/PANGAEA.847479 |