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Updated: May 20, 2026

Foraging Path-length Protocol for Drosophila melanogaster Larvae
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Experience, corpulence and decision making in ant foraging.

Elva J H Robinson1, Ofer Feinerman, Nigel R Franks

  • 1School of Biological Sciences, Bristol University, Bristol, UK. Elva.Robinson@york.ac.uk

The Journal of Experimental Biology
|July 13, 2012
PubMed
Summary
This summary is machine-generated.

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Ant foraging decisions are primarily driven by physiology, not just experience. Less corpulent ants, indicating higher colony resource needs, are more likely to forage, with experience providing fine-tuning.

Area of Science:

  • Behavioral Ecology
  • Social Insect Behavior
  • Animal Physiology

Background:

  • Social insects exhibit task specialization, with individuals deciding whether to forage or remain in the nest.
  • Foraging decisions can be influenced by personal experience and physiological state (e.g., corpulence).
  • Distinguishing between experience-based and physiology-based specialization is challenging due to confounding factors.

Purpose of the Study:

  • To experimentally determine if foraging specialization in ants is primarily based on physiology or individual experience.
  • To decouple the influence of corpulence and recent foraging success on ant behavior.

Main Methods:

  • Development of an automated system with radio-tagged ants and controlled access doors.
  • Manipulation of task access to isolate the effects of physiological state (corpulence) and recent experience.

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Last Updated: May 20, 2026

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  • Observation of ant foraging decisions under conflicting information scenarios.

    • Main Results:

    • Ants prioritized corpulence over recent foraging experience when making decisions.
    • Less corpulent ants (physiologically predisposed to forage) showed increased foraging propensity after successful foraging experiences.
    • Physiological differences established stable foraging thresholds, while experience offered flexible adjustments.

    Conclusions:

    • Colony foraging organization relies on stable, long-term physiological differences among individuals.
    • Short-term learning processes fine-tune foraging effort, allowing for robust and flexible colony-level responses.
    • Corpulence serves as a key indicator for individual foraging decisions in social insects.