| Autor: |
Webster MD; Department of Avian Sciences, University of California, Davis 95616., Weathers WW |
| Jazyk: |
angličtina |
| Zdroj: |
The American journal of physiology [Am J Physiol] 1989 Feb; Vol. 256 (2 Pt 2), pp. R572-6. |
| DOI: |
10.1152/ajpregu.1989.256.2.R572 |
| Abstrakt: |
We have experimentally validated a single-sample variant of the doubly labeled water method for measuring metabolic rate and water turnover in a very small passerine bird, the verdin (Auriparus flaviceps). We measured CO2 production using the Haldane gravimetric technique and compared these values with estimates derived from isotopic data. Doubly labeled water results based on the one-sample calculations differed from Haldane values by less than 0.5% on average (range -8.3 to 11.2%, n = 9). Water flux computed by the single-sample method differed by -1.5% on average from results for the same birds based on the standard, two-sample technique (range -13.7 to 2.0%, n = 9). |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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