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Predatory interactions between prey affect patch selection by predators.

Yasuyuki Choh1, Maurice W Sabelis2, Arne Janssen2

  • 1Laboratory of Applied Entomology, Department of Horticulture, Chiba University, 648 Matsudo, Chiba, 271-8510 Japan.

Behavioral Ecology and Sociobiology
|March 31, 2017
PubMed
Summary
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Predatory mites altered patch selection based on prey interactions. When one prey species ate the other

Area of Science:

  • Ecology
  • Predator-prey dynamics
  • Behavioral ecology

Background:

  • Predators typically select prey based on efficiency and quality.
  • Prey interactions, like intraguild predation, can influence predator prey choice.
  • The impact of intraguild predation on predator patch selection is not well understood.

Purpose of the Study:

  • To investigate how intraguild predation between prey species affects predator patch selection.
  • To determine if prey interactions influence the foraging decisions of predatory mites.

Main Methods:

  • Studied the predatory mite Neoseiulus californicus and its prey: western flower thrips (Frankliniella occidentalis) and two-spotted spider mites (Tetranychus urticae).
  • Assessed predator performance and patch selection in different prey combinations.
Keywords:
BehaviourCompetitionNeoseiulus californicusPrey-prey interactionsShared predatorSpider mitesThrips

Related Experiment Videos

  • Investigated olfactory cues associated with prey, including killed spider mite eggs.

    • Main Results:

    • Predator performance was highest on spider mites alone, intermediate with both prey, and lowest with thrips larvae alone.
    • Predators preferred patches with spider mites over patches with both spider mites and thrips.
    • Reduced attractiveness of patches with both prey was linked to cues from killed spider mite eggs.

    Conclusions:

    • Predatory mite patch selection is significantly influenced by intraguild predation among prey species.
    • The feeding of one prey species on the eggs of another can alter predator foraging behavior.
    • Understanding these complex prey interactions is crucial for predicting predator distribution and foraging success.