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Selection for Delayed Senescence in Drosophila melanogaster

Leo S. Luckinbill, Robert Arking, Michael J. Clare, William C. Cirocco and Steven A. Buck
Evolution
Vol. 38, No. 5 (Sep., 1984), pp. 996-1003
DOI: 10.2307/2408433
Stable URL: http://www.jstor.org/stable/2408433
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Selection for Delayed Senescence in Drosophila melanogaster
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Abstract

Although theories of the evolution of senescence differ in the mode of action by which genes are thought to control the aging process, they all view the rate of senescence as an adaptable feature of life history and modifiable, therefore, by natural selection. Tests of theory, however, have generally yielded mixed results. The life span of Drosophila melanogaster increased strongly in populations selected for late reproduction in these experiments. Delayed senescence was accompanied by a reduced early fecundity, suggesting pleiotropic genetic control of the aging process.

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