INTERACTIONS BETWEEN CORPORA ALLATA, FAT-BODY AND OVARY IN INSECT REPRODUCTION - WHICH CONTROLS WHICH

The classical model describing the endocrinology of vitellogenesis inv olves the juvenile hormone (JH) produced by the corpora allata (CA), w hich induces the synthesis of vitellogenin (Vg) in the fat body, which is then incorporated into developing oocytes. However, exceptions and special regulatory loops have been reported in different insects, thu s leading to a more complicated picture. In spite of the great diversi ty encountered, it may be possible to reach a unified scheme of the in terplay between CA, fat body and the ovary, where homeostasis is accom plished by autoinhibition and short and long-loop feedback mechanisms.