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The case for negative senescence

  • James W. Vaupel

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Annette Baudisch

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Martin Dölling

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Deborah A. Roach
  • Jutta Gampe

    (Max Planck Institute for Demographic Research, Rostock, Germany)

Registered author(s):

    Negative senescence is characterized by a decline in mortality with age after reproductive maturity, generally accompanied by an increase in fecundity. Hamilton (1966) ruled out negative senescence: we adumbrate the deficiencies of his model. We review empirical studies of various plants and some kinds of animals that may experience negative senescence and conclude that negative senescence may be widespread, especially in indeterminate-growth species for which size and fertility increase with age. We develop optimization models of life-history strategies that demonstrate that negative senescence is theoretically possible. More generally, our models contribute to understanding of the evolutionary and demographic forces that mold the agetrajectories of mortality, fertility and growth.

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    File URL: http://www.demogr.mpg.de/papers/working/wp-2004-002.pdf
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    Paper provided by Max Planck Institute for Demographic Research, Rostock, Germany in its series MPIDR Working Papers with number WP-2004-002.

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    Length: 28 pages
    Date of creation: Jan 2004
    Date of revision:
    Handle: RePEc:dem:wpaper:wp-2004-002
    Contact details of provider: Web page: http://www.demogr.mpg.de/

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    1. repec:cup:cbooks:9780521337465 is not listed on IDEAS
    2. Annette Baudisch, 2004. "Hamilton’s indicators of the force of selection," MPIDR Working Papers WP-2004-017, Max Planck Institute for Demographic Research, Rostock, Germany.
    3. repec:cup:cbooks:9780521331586 is not listed on IDEAS
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