Weighting waiting in collective decision-making

Robert Planqué, Anna Dornhaus, Nigel R. Franks, Tim Kovacs, James A.R. Marshall

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Animals searching for food, mates, or a home often need to decide when to stop looking and choose the best option found so far. By re-analyzing experimental data from experiments by Mallon et al. (Behav Ecol Sociobiol 50:352-359, 2001), we demonstrate that house-hunting ant colonies are gradually more committed to new nests during the emigration. Early in house-hunting, individual ants were flexibly committed to new nest sites. However, when carrying to a new nest had started, ants hardly ever switched preference. Using a theoretical model based on experimental data, we test at which stage flexible commitment influences speed and accuracy most. We demonstrate that ant colonies have found a good compromise between impatience and procrastination. Early flexibility combined with later rigidity is identically effective as other strategies that include flexible commitment, but it is particularly good when emigration conditions are harsh.

Original languageEnglish (US)
Pages (from-to)347-356
Number of pages10
JournalBehavioral Ecology and Sociobiology
Volume61
Issue number3
DOIs
StatePublished - Jan 2007

Keywords

  • Ants
  • Decision-making
  • Emigration
  • House-hunting behavior

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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