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Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
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The Adaptive Dynamics of Consumer Choice.

Peter A Abrams

    The American Naturalist
    |March 27, 2018
    PubMed
    Summary

    Predator switching behavior, influenced by non-instantaneous prey choice, often disrupts ideal free distributions and can lead to chaotic population dynamics. This switching behavior impacts prey populations and food web interactions.

    Area of Science:

    • Ecology
    • Mathematical Biology
    • Population Dynamics

    Background:

    • Predator-prey interactions are fundamental to ecosystem stability.
    • Predator foraging strategies, including prey switching, significantly influence population dynamics.
    • Ideal Free Distribution (IFD) theory predicts even predator distribution based on prey availability.

    Purpose of the Study:

    • To investigate the ecological consequences of non-instantaneous prey choice in predator-prey systems using mathematical models.
    • To analyze how adaptive foraging behavior affects predator-prey population cycles and distribution.
    • To explore the impact of prey switching on prey population dynamics and food web interactions.

    Main Methods:

    • Development and analysis of mathematical models simulating predator-prey interactions with non-instantaneous prey switching.
    Keywords:
    adaptive foragingapparent competitionideal free distributionpredator preferenceswitchingtwo‐patch models

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  • Incorporation of trade-offs in predator consumption rates and adaptive adjustment of these rates based on predator fitness.
  • Examination of model dynamics, including population cycles, attractors, and deviations from Ideal Free Distribution.

    • Main Results:

    • Adaptive prey switching frequently prevents the achievement of an Ideal Free Distribution.
    • Non-instantaneous prey choice can lead to chaotic dynamics or alternative attractors in predator-prey systems.
    • Prey switching can reduce the minimum viable densities of prey species, regardless of habitat.
    • Adding prey refuges or immigration can help achieve IFD under certain conditions.

    Conclusions:

    • Predator adaptive foraging behavior, specifically non-instantaneous prey switching, introduces significant complexity into population dynamics.
    • Prey switching plays a crucial role in mediating indirect interactions between prey species and shaping food web structure.
    • Understanding these dynamics is essential for predicting ecosystem stability and managing biological resources.