Hormone found in the sinus gland of isopods and decapods which controls the blood sugar level. Has a secretagogue action over the amylase released from the midgut gland. May act as a stress hormone and may be involved in the control of molting and reproduction (By similarity). Expressed at a constant level in the eyestalks of juveniles and mature females. A low level expression is seen in the central nervous system. Belongs to the arthropod CHH/MIH/GIH/VIH hormone family.