Brain factor control of sex pheromone production in the female corn earworm moth.
Sex pheromone production in the female corn earworm moth Heliothis zea is controlled by a hormonal substance produced in the female's brain. It is present in the brain in scotophase as well as photophase, but it is released into the hemolymph to stimulate pheromone production only in the scotophase. The stimulatory activity was also detected in the brains of male corn earworm moths and of other moths.
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