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Evolutionarily Stable Strategies for Consuming a Structured Resource.

W G Wilson, S A Richards

    The American Naturalist
    |February 5, 2000
    PubMed
    Summary
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    This study explores consumer foraging strategies and their impact on resource distribution. Flexible foraging in spatial environments promotes consumer grouping and the coexistence of diverse strategies, explaining natural patterns.

    Area of Science:

    • Ecology
    • Evolutionary Biology
    • Theoretical Ecology

    Background:

    • Understanding consumer-resource dynamics is crucial in ecology.
    • Foraging behavior significantly influences population dynamics and resource availability.
    • Previous models often simplify foraging strategies or environmental structure.

    Purpose of the Study:

    • To examine a general consumer-resource model with discrete consumers and a continuous resource.
    • To investigate the evolutionary stability of fixed versus flexible foraging strategies.
    • To analyze the impact of spatial environments on foraging behavior and consumer distribution.

    Main Methods:

    • Development of a general consumer-resource model.
    • Inclusion of a consumer energetics model linking consumption, behavior, and metabolism.
    Keywords:
    competitive coexistenceevolutionary stable strategiesexploitation competitionforagingresource structurespatial structure

    Related Experiment Videos

  • Analysis of foraging strategies in both nonspatial and spatial environments.

    • Main Results:

    • A single evolutionarily stable foraging strategy exists in nonspatial environments.
    • Flexible foraging in spatial environments leads to consumer grouping and altered resource distribution.
    • No single foraging strategy can exclude others in spatial environments, leading to coexistence.

    Conclusions:

    • Flexible foraging in spatial settings promotes the stable coexistence of multiple strategies.
    • This coexistence may explain observed dichotomous patterns in natural systems.
    • The model provides insights into the evolution of foraging behavior and its ecological consequences.