Proteins of male accessory reproductive gland secretions and the spermatophore of the tsetse, Glossina morsitans morsitans, have been characterised by electrophoresis. The spermatophore contains all the major proteins of accessory gland secretions and no new proteins were detected.
Influence of blood meals and neurosecretions on synthesis of accessory gland secretions and insemination are discussed. It is concluded that synthesis of accessory gland secretions commences prior to adult emergence and continues uninterrupted in the adult, independent of the corpus allatum.
