Abstract
AbstractIn collective decision-making, when confronted with different options, groups usually show a more marked preference for one of the options than do isolated individuals. This results from the amplification of individual preferences by social interactions within the group. We show, in an unusual counter-example, that when facing a binary choice between shelters with different relative humidities, isolated cockroaches of the species Periplaneta americana select the wettest shelter, while groups select the driest one. This inversion of selection results from a conflictual influence of humidity on the probabilities of entering and leaving each shelter. It is shown that the individual probability of entering the wettest shelter is higher than the group probability and is increased by previous entries and exits. The probability of leaving each shelter decreases in the population due to social interactions, but this decrease is less pronounced in the wettest shelter, suggesting weaker social interactions. A theoretical model is developed and highlights the existence of tipping points dependent on population size, beyond which an inversion of selection of a resting place is observed.
Funder
Université Libre de Bruxelles
Publisher
Springer Science and Business Media LLC
Reference53 articles.
1. Lihoreau, M., Costa, J. T. & Rivault, C. The social biology of domiciliary cockroaches: colony structure, kin recognition and collective decisions. Insectes Sociaux 59, 445–452, https://doi.org/10.1007/s00040-012-0234-x (2012).
2. Sumpter, D. J. T. (ed.) Collective Animal Behavior (Princeton University Press, 2010).
3. Tremblay, M. N. & Gries, G. Abiotic and biotic factors affect microhabitat selection by the firebrat, Thermobia domestica (packard) (thysanura: Lepismatidae). Journal of Insect Behavior 19, 321–335, https://doi.org/10.1007/s10905-006-9028-1 (2006).
4. Chikao, N. & Keiko, U. Olfactory sensitivity of Periplaneta cockroaches to functional group and molecular size of general odors. Comparative Biochemistry and Physiology Part A: Physiology 81, 43–47, https://doi.org/10.1016/0300-9629(85)90264-6 (1985).
5. Krafft, B., Horel, A. & Julita, J.-M. Influence of food supply on the duration of the gregarious phase of a maternal-social spider, Coelotes Terrestris (araneae, agelenidae). The Journal of Arachnology 14, 219–226 (1986).
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