Abstract
The histolysis of larval fat body cells in adult femaleDrosophila melanogaster was examined in wild type and mutant animals. The fat body cells of wild type (Canton-S),apterous 56f homozygotes,apterous 78jts homozygotes and heterozygotes,apterous 4/+, ecdysoneless1 homozygotes and heterozygotes all underwent histolysis normally during the 72 h following adult eclosion. Only in the case ofap 4/ap4 adults did the cells fail to histolyze normally. The fat body cells of both diapausing and non-diapausing wild type females underwent histolysis at the same rate. Attempts to demonstrate histolysis in vitro were unsuccessful, even in the presence of juvenile hormones (JHs), larval ring glands, or adult ovaries. In all strains other than theap 4 homozygotes, a significant proportion of larval fat body cells were dead at any time while theap 4/ap4 animals, almost all cells remained viable. It is postulated that fat body cell lysis following eclosion is not a JH-mediated event, but is elicited by an as yet unidentified factor(s), possibly originating in the ovary.
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Richard, D.S., Arnim, A.E. & Gilbert, L.I. A reappraisal of the hormonal regulation of larval fat body histolysis in femaleDrosophila melanogaster . Experientia 49, 150–156 (1993). https://doi.org/10.1007/BF01989420
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DOI: https://doi.org/10.1007/BF01989420