Key points are not available for this paper at this time.
The concentrations of 28 metabolites, including glycogen, trehalose, components of the glycolytic pathway and the Krebs cycle, and amino acids in flight muscle of the blowfly, Phormia regina, were measured concurrently after periods of flight ranging from 5 set to 1 hour.
Sacktor et al. (Tue,) studied this question.