Adipokinetic hormone I (Locusta migratoria) (Lom-AKH-I), an insect adipokinetic hormone (AKH), increases fat body cAMP levels in vitro. AKHs regulate the mobilization of carbohydrates and lipids from fat body stores for flight, through AKH receptor(s)' association with cAMP production and glycogen phosphorylase activation via the stimulatory guanine nucleotide-binding protein (Gs) [1] [3].