Abstract
The intensity of 14C-plamitate esterification by the fat body of Galleria mellonella females as well as the lipolytic activity of this tissue was studied at different stages of development, beginning with the last larval stage, through the consecutive days of the pupal stage, until the adult form. Both processes undergo changes at the insect life period studied. These changes occurring at the pupa plus pharate adult stage seem to be connected with the development of oöcytes since ovariotectomy exerts an influence upon them. After castration, no rise of 14C-palmitate incorporation into the neutral lipids of the fat body is observed which normally occurs in the course of the last 3 days before pupal-adult ecdysis of non-castrated insects. This operation also lowers the lipolytic activity of the fat body which rises considerably between the second and sixth day after larval-pupal ecdysis in normally developing insects. The way in which the ovaries might act upon the processes studied is discussed.
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