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Measurement of Lifespan in Drosophila melanogaster
10:00

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Published on: January 7, 2013

A Disturbing View of Life History Evolution.

Katie Murray1,2, Stuart Townley2, Dave Hodgson1

  • 1Centre for Ecology and Conservation, Faculty of Environment, Science and Economy, University of Exeter, Penryn Campus, Penryn, Cornwall, United Kingdom.

The American Naturalist
|May 26, 2026
PubMed
Summary
This summary is machine-generated.

Catastrophic disturbances can drive the fast-slow life history continuum, influencing species survival and reproduction regardless of resources. This resilience framework reveals how disturbance regimes shape life history diversity.

Keywords:
disturbancefast-slow continuumlife historyrecoveryresilienceresistance

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Demography

Background:

  • Species life history traits, including survival, growth, and reproduction, are often organized along a fast-slow continuum.
  • This continuum traditionally links fast life histories with abundant resources and slow ones with limited resources.

Purpose of the Study:

  • To investigate the role of unpredictable, catastrophic demographic disturbances in shaping the fast-slow life history continuum.
  • To demonstrate that this continuum can arise as a zone of highest fitness under disturbance regimes, independent of resource availability or life history trade-offs.

Main Methods:

  • Development of a resilience framework to assess resistance, recovery, and fitness of stage-structured life histories.
  • Modeling demographic responses within stochastically disturbed environments.

Main Results:

  • Structured disturbances favor either fast or slow life history strategies due to their distinct resistance and recovery capabilities.
  • The fast-slow continuum emerges as a fitness optimum under specific disturbance regimes, irrespective of resource conditions.

Conclusions:

  • Demographic disturbance regimes are significant factors in the evolution of diverse life histories.
  • The resilience framework provides valuable insights into species' demographic and evolutionary adaptations to environmental change and fluctuations.