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Related Experiment Video

Updated: Mar 3, 2026

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi
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Polydomy enhances foraging performance in ant colonies.

N Stroeymeyt1, P Joye2, L Keller2

  • 1Department of Ecology and Evolution, Biophore, UNIL-Sorge, University of Lausanne, 1015 Lausanne, Switzerland nathalie.stroeymeyt@unil.ch.

Proceedings. Biological Sciences
|April 28, 2017
PubMed
Summary

Polydomy, or multiple nests, helps ant colonies forage more efficiently by improving task allocation and communication. This strategy allows colonies to better find and retrieve resources, overcoming challenges of limited food availability.

Keywords:
Michener's paradoxantsdispersed central-place foragingdivision of labouroutstationspolydomy

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Area of Science:

  • Ecology
  • Animal Behavior
  • Evolutionary Biology

Background:

  • Collective foraging offers benefits like reduced predation but increases competition with limited resources.
  • Michener's paradox describes decreased per capita productivity with larger colony sizes, potentially due to resource limitation.
  • Polydomy, spreading colonies across multiple nests, is hypothesized to improve foraging efficiency and circumvent Michener's paradox, but evidence is limited.

Purpose of the Study:

  • To experimentally investigate how polydomy affects foraging performance in Temnothorax nylanderi ant colonies.
  • To elucidate the specific mechanisms by which polydomy enhances foraging efficiency in food-deprived colonies.

Main Methods:

  • Experimental manipulation of polydomy in Temnothorax nylanderi colonies.
  • Observation and analysis of foraging behavior, task allocation, and resource retrieval.
  • Tracking of colony movement (queens, brood, workers) in response to resource distribution.

Main Results:

  • Polydomy significantly enhances foraging performance in food-deprived colonies.
  • It optimizes task allocation, leading to faster protein resource retrieval.
  • Inter-nest communication reduces search times for distant resources.
  • Colonies dynamically relocate resources and individuals to exploit spatial resource heterogeneities.

Conclusions:

  • Polydomy is an effective strategy for enhancing ant colony foraging efficiency, particularly under resource limitation.
  • It facilitates adaptation to environmental conditions through flexible space occupancy and resource exploitation.
  • The findings provide strong support for polydomy as a mechanism to overcome Michener's paradox.