The process of vitellogenesis is regulated by hormones,
such as juvenile hormone (Engelmann 1979, Wyatt 1988),
ecdysteroids (Hagedorn & Kunkel 1979, Hagedorn
1985), and neurosecretory hormones (Raabe 1986). In
Heteroptera, vitellogenesis is mainly regulated by the
juvenile hormone, while ecdysteriods have a discrete
role (Dittmann & Biczkowski 1995, Davey 1997). The
juvenile hormone regulates not only vitellogenin (Vg)
synthesis, but also Vg uptake