文章基本信息

标题：Consensus driven by a minority in heterogenous groups of the cockroach Periplaneta americana
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作者：Mariano Calvo Martín ; Max Eeckhout ; Jean-Louis Deneubourg 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：7
页码：1-19
DOI：10.1016/j.isci.2021.102723
语种：English
出版社：Elsevier
摘要：SummaryMany social species are able to perform collective decisions and reach consensus. However, how the interplay between social interactions, the diversity of preferences among the group members and the group size affects these dynamics is usually overlooked. The collective choice between odourous and odorless shelters is tested for the following three groups of social cockroaches (Periplaneta americana) which are solitary foragers: naive (individuals preferring the odorous shelter), conditioned (individuals without preference), and mixed (combining, unevenly, conditioned, and naive individuals). The robustness of the consensus is not affected by the naive individuals' proportion, but the rate and the frequency of selection of the odorous shelter are correlated to this proportion. In mixed groups, the naive individuals act as influencers. Simulations based on the mechanisms highlighted in our experiments predict that the consensus emerges only for intermediate group sizes. The universality of these mechanisms suggests that such phenomena are widely present in social systems.Graphical abstractDisplay OmittedHighlights•Consensus is group size dependent•Consensus is not affected by an aversive group conditioning•Consensus is robust regardless the diversity of individual preferences in a group•Group choice is controlled by the preference of a minority of individualsBiological sciences; Ecology; Ethology, Social behaviour