Developmental Changes in the Late Larva of Calliphora Stygia Iv. Uptake of Plasma Protein by the Fat Body

Abstract

The protein content of the larval fat body of O. stygia increases during late third-instar development from 1 ·0 mg at day 7 to 3·4 mg in the white prepupa (day 11). This increase is due predominantly to uptake of protein from the haemolymph, in which there is a concurrent fall in protein concentration. The rate of uptake rises from 0·6 mg/day at days 8-9 to 0·9 mg/day at days 10-11.