Table 2.
Comparison of total energy expenditures measured by the DLW method (TEEdlw) and respirometry (TEEresp) in streaked shearwaters. TEEdlw were calculated from the five equations from the foregoing studies below. Estimate and ratio represent TEEdlw value calculated using each equation and the ratio between TEEdlw and TEEresp, respectively
| Equations* | Group A | Group B | Group C | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Experimental condition | Ground | Ground | Water | |||
| Measurement duration (h) | 24.4 | 0.2 | 48.1 | 0.1 | 24.3 | 0.3 |
| TEEresp (kJ) | 258.6 | 17.4 | 486.4 | 98.4 | 860.9 | 210.2 |
| TEEdlw (kJ) | ||||||
| SNG93 (T) | ||||||
| Estimate | 248.3 | 113.2 | 602.9 | 86.4 | 1128.4 | 316.3 |
| Ratio | 0.952 | 0.398 | 1.267 | 0.216 | 1.308 | 0.212 |
| SP93 (T) | ||||||
| Estimate | 253.4 | 111.9 | 612.1 | 87.8 | 1167.3 | 329.4 |
| Ratio | 0.971 | 0.392 | 1.286 | 0.217 | 1.351 | 0.216 |
| SCH86 (T) | ||||||
| Estimate | 252.7 | 112.0 | 610.9 | 87.6 | 1162.4 | 327.7 |
| Ratio | 0.969 | 0.393 | 1.283 | 0.217 | 1.346 | 0.215 |
| SP97 (T) | ||||||
| Estimate | 264.0 | 120.0 | 640.7 | 91.8 | 1201.3 | 337.0 |
| Ratio | 1.012 | 0.421 | 1.346 | 0.229 | 1.392 | 0.225 |
| SP97 (O) | ||||||
| Estimate | 271.4 | 112.5 | 645.6 | 94.4 | 1279.1 | 367.2 |
| Ratio | 1.041 | 0.393 | 1.355 | 0.227 | 1.477 | 0.230 |
*
Five equations were used to calculate metabolic rate: SCH86, equation 6 from Schoeller et al. (1986); SP93, equation 4 from Speakman (1993); SNG93, equation 3 from Speakman et al. (1993); SP97, equation 7.17 and 7.43 from Speakman (1997). T and O in parentheses indicate the two- and one-pool model, respectively.