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Evolutionary Ecology

, Volume 1, Issue 1, pp 37–46 | Cite as

Estimating the number of genetic elements that defer senescence inDrosophila

  • Leo S. Luckinbill
  • Michael J. Clare
  • Walter L. Krell
  • William C. Cirocco
  • Paula A. Richards
Papers

Summary

Although many different physiological and biochemical changes characterize the process of senescence, little is understood of the genetic elements that determine its age of onset. We provide here the first estimates of the number of genetic factors that extend longevity inDrosophila melanogaster. Life span was measured in F1, F2 and backcrosses of true-breeding long and short-lived stocks ofD. melanogaster, established by selection. Estimates of the number of effective factors delaying senescence range from about 0.3 to 1.5, indicating control by a single factor. The distribution of longevity shows this to arise as selection acts on the short-lived parental stock. Life span is extended at the cost of early fecundity.

Keywords

Genetic elements estimate senescence Drosophila 

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Copyright information

© Chapman and Hall Ltd. 1987

Authors and Affiliations

  • Leo S. Luckinbill
    • 1
  • Michael J. Clare
    • 1
  • Walter L. Krell
    • 1
  • William C. Cirocco
    • 1
  • Paula A. Richards
    • 1
  1. 1.Department of Biological SciencesWayne State UniversityDetroitUSA

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