the effect of food on the respiration rates of daphnia magna using a flow-through system
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2003
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Abstract
Respiration rates and gut fluorescence of the cladoceran Daphnia magna were studied using a flow-through system. This open system has the advantage of introducing food or producing a starvation effect during the course of the experiment. Severe variations in respiratory rates were observed in relation to the presence or absence of food, indicating short-term variability. Organisms kept starved or at low food for a long period (15-20 h) responded to a sudden increase in food by increasing their respiration rates three- to four-fold in parallel with their gut content. A significant relationship between gut fluorescence and respiration rates was observed, suggesting that feeding and the related swimming activity were responsible for the observed metabolic variability.
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schmoker2003scientiathe
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| Authors | ;Claire Schmoker;Santiago Hernández-León |
| Journal | Nutrients |
| Year | 2003 |
| DOI |
10.3989/scimar.2003.67n3361
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