Competition affects risk-sensitivity in foraging shrews View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1985-04

AUTHORS

C. J. Barnard, C. A. J. Brown

ABSTRACT

Studies of risk-sensitive foraging have so far focused only on the effect of food demand on choice of feeding site. We suggest that competition is likely to be another factor influencing risksensitivity. A choice experiment with common shrews showed that, in the absence of competition, risk-aversion increased with increasing food intake relative to requirement. When apparent competitors were present, however, shrews were risk-indifferent regardless of their estimated requirement. The switch to risk-indifference in the presence of competitors appears to be an all-or-nothing rule of thumb which is not modified by experience with reward probability distributions. More... »

PAGES

379-382

References to SciGraph publications

  • 1982-07. Optimal foraging: Some simple stochastic models in BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
  • 1981-06. Prey size selection and competition in the common shrew (Sorex araneus L.) in BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
  • 1983-07. Time and energy budgets and competition in the common shrew (Sorex araneus L.) in BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
  • 1983-03. White-crowned sparrows (Zonotrichia leucophrys): foraging preferences in a risky environment in BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
  • 1985-01. Risk-sensitive foraging in common shrews (Sorex araneus L.) in BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
  • Journal

    TITLE

    Behavioral Ecology and Sociobiology

    ISSUE

    4

    VOLUME

    16

    Author Affiliations

    Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf00295552

    DOI

    http://dx.doi.org/10.1007/bf00295552

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1004882486


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