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Effect of extrinsic mortality on the evolution of senescence in guppies

Author

Listed:
  • David N. Reznick

    (University of California)

  • Michael J. Bryant

    (University of California
    California Institute of the Arts)

  • Derek Roff

    (University of California)

  • Cameron K. Ghalambor

    (Colorado State University)

  • Dionna E. Ghalambor

    (Colorado State University)

Abstract

Classical theories1,2 for the evolution of senescence predict that organisms that experience low mortality rates attributable to external factors, such as disease or predation, will evolve a later onset of senescence. Here we use patterns of senescence in guppies derived from natural populations that differ in mortality risk to evaluate the generality of these predictions. We have previously found that populations experiencing higher mortality rates evolve earlier maturity and invest more in reproduction, as predicted by evolutionary theory3. We report here that these same populations do not have an earlier onset of senescence with respect to either mortality or reproduction but do with respect to swimming performance, which assesses neuromuscular function. This mosaic pattern of senescence challenges the generality of the association between decreased extrinsic mortality and delayed senescence and invites consideration of more derived theories for the evolution of senescence.

Suggested Citation

  • David N. Reznick & Michael J. Bryant & Derek Roff & Cameron K. Ghalambor & Dionna E. Ghalambor, 2004. "Effect of extrinsic mortality on the evolution of senescence in guppies," Nature, Nature, vol. 431(7012), pages 1095-1099, October.
    • Handle: RePEc:nat:nature:v:431:y:2004:i:7012:d:10.1038_nature02936
    DOI: 10.1038/nature02936
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    Cited by:

    1. Oded Galor & Omer Moav, 2004. "Natural Selection and the Evolution of Life Expectancy," GE, Growth, Math methods 0409004, University Library of Munich, Germany.
    2. Bonsall, Michael B. & Mangel, Marc, 2009. "Density dependence, lifespan and the evolutionary dynamics of longevity," Theoretical Population Biology, Elsevier, vol. 75(1), pages 46-55.
    3. Krish Sanghvi & Regina Vega-Trejo & Shinichi Nakagawa & Samuel J. L. Gascoigne & Sheri L. Johnson & Roberto Salguero-Gómez & Tommaso Pizzari & Irem Sepil, 2024. "Meta-analysis shows no consistent evidence for senescence in ejaculate traits across animals," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    4. Galor, Oded & Michalopoulos, Stelios, 2006. "The Evolution of Entrepreneurial Spirit and the Process of Development," CEPR Discussion Papers 6022, C.E.P.R. Discussion Papers.

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