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| Autori principali: | , , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
| Pubblicazione: |
PANGAEA
2016
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| Soggetti: | |
| Accesso online: | https://doi.org/10.1594/PANGAEA.867479 |
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| _version_ | 1867170994208112640 |
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| author | Morley, Simon A Suckling, Coleen C Clark, Melody S Cross, Emma L Peck, Loyd S |
| author_facet | Morley, Simon A Suckling, Coleen C Clark, Melody S Cross, Emma L Peck, Loyd S |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This study investigated the effects of long-term incubation to near-future combined warming (+2 °C) and ocean acidification (-0.3 and -0.5 pH units) stressors, relative to current conditions (-0.3 °C and pH 8.0), on the energetics of food processing in the Antarctic sea urchin, Sterechinus neumayeri. After an extended incubation of 40 months, energy absorbed, energy lost through respiration and lost as waste were monitored through two feeding cycles. Growth parameters (mass of somatic and gonad tissues and the CHN content of gonad) were also measured. There were no significant effects of combined ocean acidification (OA) and temperature stressors on the growth of somatic or reproductive tissue. Despite more food being consumed in the low temperature control, once food processing and maintenance costs were subtracted, there were no significant effects of treatment on the scope for growth. The biggest significant differences were between amounts of food consumed during the two feeding cycles. More food was consumed by the low temperature (0 °C) control animals, indicating a potential effect of the changed conditions on digestive efficiency. Also, in November, more food was consumed, with a higher absorption efficiency, which resulted in a higher scope for growth in November than September and may reflect increased energetic needs associated with a switch to summer physiology. The effect of endogenous seasonal cycles and environmental variability on organism capacity is discussed. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_867479 |
| institution | PANGAEA |
| language | en |
| publishDate | 2016 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Long-term effects of altered pH and temperature on the feeding energetics of the Antarctic sea urchin, Sterechinus neumayeri Morley, Simon A Suckling, Coleen C Clark, Melody S Cross, Emma L Peck, Loyd S Alkalinity, total; Alkalinity, total, standard error; Ammonia excretion; Animalia; Antarctic; Aragonite saturation state; Aragonite saturation state, standard error; Ash free dry mass; Ash free dry mass/dry mass ratio; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calcite saturation state, standard error; 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); Date; Dry mass; Echinodermata; Energy budget; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gonad, mass; Gonadosomatic index; Growth/Morphology; Identification; Laboratory experiment; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other metabolic rates; Oxygen consumed/Nitrogen excreted ratio; 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; Polar; Potentiometric; Registration number of species; Reproduction; Respiration; Respiration rate, oxygen; Salinity; Salinity, standard error; Scope for growth; Single species; South_Cove_OA; Species; Sterechinus neumayeri; Temperature; Temperature, water; Temperature, water, standard error; Treatment; Type; Uniform resource locator/link to reference; Urea This study investigated the effects of long-term incubation to near-future combined warming (+2 °C) and ocean acidification (-0.3 and -0.5 pH units) stressors, relative to current conditions (-0.3 °C and pH 8.0), on the energetics of food processing in the Antarctic sea urchin, Sterechinus neumayeri. After an extended incubation of 40 months, energy absorbed, energy lost through respiration and lost as waste were monitored through two feeding cycles. Growth parameters (mass of somatic and gonad tissues and the CHN content of gonad) were also measured. There were no significant effects of combined ocean acidification (OA) and temperature stressors on the growth of somatic or reproductive tissue. Despite more food being consumed in the low temperature control, once food processing and maintenance costs were subtracted, there were no significant effects of treatment on the scope for growth. The biggest significant differences were between amounts of food consumed during the two feeding cycles. More food was consumed by the low temperature (0 °C) control animals, indicating a potential effect of the changed conditions on digestive efficiency. Also, in November, more food was consumed, with a higher absorption efficiency, which resulted in a higher scope for growth in November than September and may reflect increased energetic needs associated with a switch to summer physiology. The effect of endogenous seasonal cycles and environmental variability on organism capacity is discussed. |
| title | Long-term effects of altered pH and temperature on the feeding energetics of the Antarctic sea urchin, Sterechinus neumayeri |
| topic | Alkalinity, total; Alkalinity, total, standard error; Ammonia excretion; Animalia; Antarctic; Aragonite saturation state; Aragonite saturation state, standard error; Ash free dry mass; Ash free dry mass/dry mass ratio; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calcite saturation state, standard error; 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); Date; Dry mass; Echinodermata; Energy budget; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gonad, mass; Gonadosomatic index; Growth/Morphology; Identification; Laboratory experiment; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other metabolic rates; Oxygen consumed/Nitrogen excreted ratio; 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; Polar; Potentiometric; Registration number of species; Reproduction; Respiration; Respiration rate, oxygen; Salinity; Salinity, standard error; Scope for growth; Single species; South_Cove_OA; Species; Sterechinus neumayeri; Temperature; Temperature, water; Temperature, water, standard error; Treatment; Type; Uniform resource locator/link to reference; Urea |
| url | https://doi.org/10.1594/PANGAEA.867479 |