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Programmed cell death in the nervous system of an adult insect

✍ Scribed by James W. Truman

Publisher: John Wiley and Sons
Year: 1983
Tongue: English
Weight: 989 KB
Volume: 216
Category: Article
ISSN: 0021-9967
DOI: 10.1002/cne.902160410

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✦ Synopsis

Abstract

The tobacco hornworm moth, Munducasexta, shows extensive degeneration of abdominal neurons after the adult moth emerges (ecloses) from the old pupal skin. Death of interneurons begins about 2 hours before eclosion and continues through the next 30 hours. Motorneuron degeneration starts slightly later, commencing at about 8 hours after eclosion. Analysis of the death of identified motorneurons showed that there was a precise spatial and temporal program of neuronal death. Particular cells invariably either continued to live or died and, among the latter, the time of death varied from cell to cell but for a given cell was constant. This program of cell death was somewhat flexible in that the fates of certain cells could be adaptively modified by behaviors that might naturally occur in the life of the insect.

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