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Related Experiment Videos

Handling time promotes the coevolution of aggregation in predator-prey systems.

Sebastian J Schreiber1, Melanie Vejdani

  • 1Department of Mathematics, Institute for Integrative Bird Behavior Studies, The College of William and Mary Williamsburg, PO Box 8795, VA 23187-8795, USA. sjschr@wm.edu

Proceedings. Biological Sciences
|March 25, 2006
PubMed
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Predator handling time can stabilize predator-prey interactions by influencing coevolutionary patch preferences, leading to aggregation in heterogeneous environments. This has implications for biological control strategies.

Area of Science:

  • Ecology
  • Evolutionary Biology
  • Mathematical Biology

Background:

  • Predators exhibit type II functional responses in variable environments.
  • Spatial heterogeneity affects predator-prey life history traits and patch selection.

Purpose of the Study:

  • Analyze how spatial heterogeneity and predator handling times influence coevolution of patch preferences and ecological stability.
  • Investigate the impact of environmental variation on population dynamics and predation rates.

Main Methods:

  • Ecological and evolutionary analysis of a Nicholson-Bailey type model.
  • Derivation of an analytic expression for ecological stability.

Main Results:

  • Coevolutionarily stable populations prefer patches supporting higher densities.

Related Experiment Videos

  • Long predator handling times promote predator and prey aggregation.
  • Predator handling time can stabilize predator-prey interactions via coevolved patch preferences.

    • Conclusions:

    • Environmental variation and predator handling times shape spatial patterns of patch preferences and population dynamics.
    • Predator handling time's stabilizing effect on predator-prey interactions challenges traditional ecological theory.
    • Findings offer insights into optimizing biological control programs.