(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.



Fig. 3. Metabolic rates during hovering of pollen (open circles) and nectar (filled circles) foragers (Regression experiment) versus total mass (bee + load). Pollen foragers had significantly higher total metabolic rates than nectar foragers, but there was no significant effect of total mass on metabolic rate (see Table 2).