Table 2.

Isotopic composition (‰ δ13 C) of the diet during the experiment

Food sourceδ13C (‰)
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.