Modeling and analysis of nest-site selection by honeybee swarms: the speed and accuracy trade-off (original) (raw)

Abstract

Nest-site selection in honeybees is a process of social decision making in which the scout bees in a swarm locate several potential nest sites, evaluate them, and select the best one by means of competitive signaling. We develop a model of this process and validate that the model possesses the key features of the bees' decision-making process, as revealed by prior empirical studies. Next, we use the model to study the “design” of the nest-site selection process, with a focus on how certain behavioral parameters have been tuned by natural selection to achieve a balance between speed and accuracy. First, we study the effects of the quorum threshold and the dance decay rate. We show that evolution seems to have settled on values for these two parameters that seek a balance between speed and accuracy of decision making by minimizing the time needed to achieve a consensus and maximizing the probability that the best site is chosen. Second, we study the adaptive tuning of the tendency of bees to explore for vs be recruited to a site. We show that this tendency appears to be tuned to regulate the positive feedback process of recruitment to ensure both a reasonably rapid choice and a low probability of a poor choice. Finally we show that the probability of choosing the best site is proportional to its quality, but that this proportionality depends on its quality relative to other discovered sites.

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Notes

  1. Often, in the literature such “explorers” are referred to as “scouts.” Here, we call all bees actively involved in the nest-site selection process “scouts,” as this is how they are often referred to in experimental studies. Consequently, nest-site scouts can explore, observe dances, rest, and be committed or uncommitted to a nest site.
  2. We ran cases for N sim>100 but obtained the same qualitative results since by N sim=100, the averages we computed had converged. Standard deviations shown in subsequent plots are for the data from N sim=100 simulations in all cases.

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Acknowledgements

The research reported here was supported by the US National Science Foundation (grant no. IBN02-10541 to T.D.S.). We would like to thank Alvaro Gil for checking the simulation code and for some suggestions on the document.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Ohio State University, 2015 Neil Avenue, Columbus, OH, 43210, USA
    Kevin M. Passino
  2. Department of Neurobiology and Behavior, Cornell University, Ithaca, NY, 14853, USA
    Thomas D. Seeley

Authors

  1. Kevin M. Passino
  2. Thomas D. Seeley

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Correspondence toKevin M. Passino.

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Communicated by R. Page

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Passino, K.M., Seeley, T.D. Modeling and analysis of nest-site selection by honeybee swarms: the speed and accuracy trade-off.Behav Ecol Sociobiol 59, 427–442 (2006). https://doi.org/10.1007/s00265-005-0067-y

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