Collective Decision-Making Based on Individual Discrimination Capability in Pre-social Insects

  • Jean-Marc Amé
  • Jesus Millor
  • José Halloy
  • Grégory Sempo
  • Jean-Louis Deneubourg
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4095)


Gregarious insects, like cockroaches, aggregate in shelters during their resting period. How do individuals reach a collegial decision? What is the relation between the distributions of the individuals and the parameter values characterizing the population and the environment? With a model based on experimental data, we demonstrated that the collegial decision is based on the relation between the individual resting time in a shelter and the population in this shelter. We extended this model to the case where different sub-groups may interact and where the crowding effect under the shelters influences the aggregation. This second model shows that depending on the interaction between the sub-groups and the crowding effect, different patterns are observed such as segregation of the different sub-group or the aggregation of the whole population.


Aggregative State Aggregation Pheromone Symmetrical State Collective Choice German Cockroach 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Jean-Marc Amé
    • 1
  • Jesus Millor
    • 1
  • José Halloy
    • 1
  • Grégory Sempo
    • 1
  • Jean-Louis Deneubourg
    • 1
  1. 1.Service d’Ecologie socialeUniversité Libre de BruxellesBruxellesBelgium

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