The relationships between the brain, corpora allata, and oöcyte growth in the Central American locust, Schistocerca sp.—I. The cerebral neurosecretory system, the corpora allata, and oöcyte growth

摘要: Abstract In the adult female Central American locust, only slight changes occur in amounts of stainable material neurosecretory system as insect matures. However, corpora allata undergo striking volume and appearance during course maturation. Material from median cells cannot be seen nerves which innervate allata, but lateral cell neurosecretion, differs histochemical properties that cells, can detected nerves. Extirpation cerebral prevents oogenesis, this operation also inhibits activation are essential for oocyte growth. While development is completely prevented by allatectomy, implanted will not restore If immature they do become active, if mature glands used rapidly lose their activity. order to remain must retain intact connexions with central nervous system.