Abstract
The endocrine system involved in the control of oögenesis in the housefly, Musca domestica vicina, was investigated. Allatectomy, decapitation, and starvation of newly emerged females resulted in inhibition of oögenesis, showing a close relationship between enlargement of the corpus allatum and growth of follicles during the first oögenesis. Histological observation of sexually matured females showed active secretion of the corpus allatum and the medial neurosecretory cells of pars intercerebralis. Topical application of juvenile hormone analogues (JHA) to the allatectomized fly induced the growth of ovary, and critical doses of methoprene and methyl-7, 11-diethyl-juvenate for the maturation of the ovary were determined. JHA stimulated initiationof oögenesis in the starved or decapitated flies as well as vitellogenesis in the sugar-fed one; subsequently it was found that juvenile hormone acted not only as a gonadotropin but also as a regulator of vitellogenesis. Furthermore, JHA stimulated cell lysis in pupal fat body of female flies, indicating a possible influence of juvenile hormone upon the process of releasing vitellogenin.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
