Hormonal control of morphogenetic cell death of the wing hypodermis in Lucilia cuprina.
1. Cytoplasmic fragments in the haemolymph of newly emerged flies derive from the degenerating wing hypodermis. 2. At the time of eclosion, dorsal and ventral cell layers of the wing are connected by processes containing bundles of microtubules and microfilaments. Cytoplasmic fragments contain similar bundles of microtubules but few microfilaments. 3. Extensive vacuolation marks the onset of hormonally initiated fragmentation of the wing hypodermal cells. Haemocytes containing lysosomes are present in the wing at this time, but do not invade the fragmenting hypodermis.
D000818:Animals; D001773:Blood Cells / Q000648:ultrastructure; D002462:Cell Membrane / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D004175:Diptera / Q000502:physiology*; D006458:Hemolymph / Q000166:cytology; D007301:Insect Hormones / Q000502:physiology*; D007447:Invertebrate Hormones / Q000502:physiology*; D008675:Metamorphosis, Biological; D008870:Microtubules / Q000648:ultrastructure; D009024:Morphogenesis; D014617:Vacuoles / Q000648:ultrastructure; D014921:Wings, Animal / Q000254:growth & development / Q000648:ultrastructure*
D007301:Insect Hormones; D007447:Invertebrate Hormones