JUVENILE-HORMONE REGULATION OF REPRODUCTION IN THE CYCLORRHAPHOUS DIPTERA WITH EMPHASIS ON OOGENESIS

The great diversity seen in the cyclorrhaphous dipterans suggests that it is unlikely that juvenile hormone (JH) plays a common role within the group. The role that JH does play appears to be determined by adul t lifestyle and nutritional impact on the neuroendocrine system. Using Phormia regina as a model system, the importance of JH in the reprodu ctive biology of other cyclorrhaphous dipterans are compared. The diff erent JHs found within this group, and the species studied, are presen ted. The effects of JH on the disappearance of pupal fat body in adult s, accessory reproductive gland development, and the ontogeny of sexua l behavior are discussed. As for oogenesis, vitellogenin biosynthesis and its uptake are described in more detail. (C) 1997 Wiley-Liss, Inc.