ИСТИНА

The isotopic signatures of different tissues or body parts in Carabid beetles differ significantly and depend not only on the isotope composition of food, but also on species and the sex of the individual. The isotope composition of tissues or body parts is species-specific, as a rule, but is characterized by high individual variability. For example, changes in δ15N values can reach 3.0‰ or even 8.5‰. The isotope composition of the gonads is altered most quickly as compared to the other tissues or body parts. Thus, the isotopic signatures of certain specimens during the breeding period would change more readily than at any other time.