Abstract
In this paper are given the results of the determination of duration of life in each of 3,632 individuals of Drosophila, under conditions of complete starvation. The chief results are: 1. Under complete starvation the mean duration of life and the form of the life curve are practically the same in vestigial as in normal wild-type flies, though under conditions of full feeding the wild-type flies live roughly three times as long as the vestigials. 2. There is a much reduced relative variability in duration of life under conditions of complete starvation than in conditions of full feeding. 3. The normal relation between the sexes in respect of mean duration of life (females longer-lived than males) observed under full feeding, is preserved under conditions of complete starvation. 4. Females are more variable than males, both absolutely and relatively, in duration of life under complete starvation. 5. The relation of duration of life to density of population is quite different under complete starvation from ...
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