Adipokinetic hormone (AKH) mobilizes carbohydrates
and lipids from storage into the hemolymph for energy
demands such as a long flight. Thus, AKH is a functional
counterpart of vertebrate glucagon. The red pigment concentrating
hormone (RPCH), structurally related to AKH,
controls the granule of the crustacean chromatophore, eventually
changing the body color.
