Abstract
The role of the juvenile hormone (JH) in the regulation of oogenesis and the development of the male and female reproductive glands in the butterflyNymphalis antiopa was examined by means of classical endocrine methodology. The use of neck ligatures and allatectomies, with or without injections of compounds with high JH activity, demonstrated that JH is required for: 1) oogenesis and colleterial gland development in posteclosion adult females, and 2) tubular gland-ejaculatory duct and accessory gland enlargement in posteclosion adult males. Additionally, disc gel electrophoretic studies of hemolymph from males and females in several different physiological states, and of homogenates of mature oocytes indicated that JH is required for the normal presence in gravid female hemolymph of an apparent vitellogenin.
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