Isotopic composition (‰ δ13 C) of the diet during the experiment
| Food source . | δ13C (‰) . |
|---|---|
| Cane sugar | -10.4±0.1 |
| Corn syrup | -9.7±0.2 |
| Agave syrup | -11.3±0.3 |
| Opuntia fruits | -11.3±0.2 |
| Food source . | δ13C (‰) . |
|---|---|
| Cane sugar | -10.4±0.1 |
| Corn syrup | -9.7±0.2 |
| Agave syrup | -11.3±0.3 |
| Opuntia fruits | -11.3±0.2 |
Values are means ± S.D.
Cane sugar, corn syrup and agave syrup were the three main food sources starting from day 1 of the experiment. The food was supplemented by small amounts of opuntia fruits.