Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon
The mean rate of oxygen consumption in fasted Saduriaentomon increased between 4°C and 13°C with a Q10 of 2.33. After feeding, rates of oxygen uptake increased significantly by two- to threefold at both temperatures. However, the magnitude of the ‘specific dynamic action of food’ (SDA) response vari...
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ftnerc:oai:nora.nerc.ac.uk:20236 2023-05-15T13:45:12+02:00 Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon Robertson, R.F. El-Haj, A.J. Clarke, A. Taylor, E.W. 2001 http://nora.nerc.ac.uk/id/eprint/20236/ http://www.sciencedirect.com/science/article/pii/S0022098101002866 unknown Elsevier Robertson, R.F.; El-Haj, A.J.; Clarke, A. orcid:0000-0002-7582-3074 Taylor, E.W. 2001 Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon. Journal of Experimental Marine Biology and Ecology, 262 (1). 113-129. https://doi.org/10.1016/S0022-0981(01)00286-6 <https://doi.org/10.1016/S0022-0981(01)00286-6> Publication - Article PeerReviewed 2001 ftnerc https://doi.org/10.1016/S0022-0981(01)00286-6 2023-02-04T19:32:47Z The mean rate of oxygen consumption in fasted Saduriaentomon increased between 4°C and 13°C with a Q10 of 2.33. After feeding, rates of oxygen uptake increased significantly by two- to threefold at both temperatures. However, the magnitude of the ‘specific dynamic action of food’ (SDA) response varied with temperature. At 4°C, the magnitude was 45.5±4.2 μmol, while at 13°C, magnitude was significantly higher at 62.8±6.5 μmol. In contrast, the duration of the response did not vary significantly with temperature in Saduria, with the consequence that the duration at 4°C was considerably shorter than that measured at this temperature from an Antarctic isopod in a parallel study, and the duration at 13°C was considerably longer than published values for temperate crustaceans at similar temperatures. Fasted rates of ammonia excretion increased with a Q10 of 4.74 between 4°C and 13°C. The increase after feeding was sevenfold at 4°C but only 2.6-fold at 13°C. Fasted O/N ratios for Saduria at 4°C were about twice those at 13°C. Fasted whole body protein synthesis rates (kS) increased with a Q10 of 2.61 between 4°C and 13°C. Whole body kS, measured at the peak of the SDA response, showed significant 2.7-and 1.9-fold increases at 4°C and 13°C, respectively, compared to fasted values, although the factorial rise at 13°C was reduced compared to 4°C. Alterations in kS rates after feeding at both temperatures resulted from significant increases in RNA activity (KRNA) alone. However, the increase in kS between 4°C and 13°C was accompanied by increases in both KRNA and RNA/protein ratio, a measure of the capacity for protein synthesis (CS). Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic Journal of Experimental Marine Biology and Ecology 262 1 113 129 |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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description |
The mean rate of oxygen consumption in fasted Saduriaentomon increased between 4°C and 13°C with a Q10 of 2.33. After feeding, rates of oxygen uptake increased significantly by two- to threefold at both temperatures. However, the magnitude of the ‘specific dynamic action of food’ (SDA) response varied with temperature. At 4°C, the magnitude was 45.5±4.2 μmol, while at 13°C, magnitude was significantly higher at 62.8±6.5 μmol. In contrast, the duration of the response did not vary significantly with temperature in Saduria, with the consequence that the duration at 4°C was considerably shorter than that measured at this temperature from an Antarctic isopod in a parallel study, and the duration at 13°C was considerably longer than published values for temperate crustaceans at similar temperatures. Fasted rates of ammonia excretion increased with a Q10 of 4.74 between 4°C and 13°C. The increase after feeding was sevenfold at 4°C but only 2.6-fold at 13°C. Fasted O/N ratios for Saduria at 4°C were about twice those at 13°C. Fasted whole body protein synthesis rates (kS) increased with a Q10 of 2.61 between 4°C and 13°C. Whole body kS, measured at the peak of the SDA response, showed significant 2.7-and 1.9-fold increases at 4°C and 13°C, respectively, compared to fasted values, although the factorial rise at 13°C was reduced compared to 4°C. Alterations in kS rates after feeding at both temperatures resulted from significant increases in RNA activity (KRNA) alone. However, the increase in kS between 4°C and 13°C was accompanied by increases in both KRNA and RNA/protein ratio, a measure of the capacity for protein synthesis (CS). |
format |
Article in Journal/Newspaper |
author |
Robertson, R.F. El-Haj, A.J. Clarke, A. Taylor, E.W. |
spellingShingle |
Robertson, R.F. El-Haj, A.J. Clarke, A. Taylor, E.W. Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon |
author_facet |
Robertson, R.F. El-Haj, A.J. Clarke, A. Taylor, E.W. |
author_sort |
Robertson, R.F. |
title |
Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon |
title_short |
Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon |
title_full |
Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon |
title_fullStr |
Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon |
title_full_unstemmed |
Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon |
title_sort |
effects of temperature on specific dynamic action and protein synthesis rates in the baltic isopod crustacean, saduria entomon |
publisher |
Elsevier |
publishDate |
2001 |
url |
http://nora.nerc.ac.uk/id/eprint/20236/ http://www.sciencedirect.com/science/article/pii/S0022098101002866 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Robertson, R.F.; El-Haj, A.J.; Clarke, A. orcid:0000-0002-7582-3074 Taylor, E.W. 2001 Effects of temperature on specific dynamic action and protein synthesis rates in the Baltic isopod crustacean, Saduria entomon. Journal of Experimental Marine Biology and Ecology, 262 (1). 113-129. https://doi.org/10.1016/S0022-0981(01)00286-6 <https://doi.org/10.1016/S0022-0981(01)00286-6> |
op_doi |
https://doi.org/10.1016/S0022-0981(01)00286-6 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
262 |
container_issue |
1 |
container_start_page |
113 |
op_container_end_page |
129 |
_version_ |
1766217010739412992 |