The effects of juvenile analogue on the development of the tse tse fly glossina morsitans Morsitans west wood

Abstract

In insects, egg maturation, growth, development and metabolic processes are known to be controlled by hormones secreted by the neuroendocrine system. The insect neuroendocrine system consists of the antero-medial neurosecretory cells of the brain, ¢orpus cardiac¢um (or the neurohaemal organ), corpus allatum and prothoracic glands. During development the brain neurosecret~ry cells produce neurosecretory Inaterlal (or the brain hormone) which is stored in the Corpus cardiacum from where it is released into the general circulation and stimulates the endocrine glands which respond by secreting their respective hormones that control various processes. Thus the prothoracic glands secrete ecdysones and Corpora allata secrete juvenile hormone. After the pro thoracic glands are activated, ecdysones appear in the insects body and these ecdysones cause the insect to moult,