Social modulation of individual preferences in cockroaches

Günzel, Yannick; McCollum, Jaclyn; Paoli, Marco; Galizia, C. Giovanni; Petelski, Inga; Couzin-Fuchs, Einat

doi:10.1016/j.isci.2020.101964

Cited by 14 publications

(19 citation statements)

References 59 publications

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“…Previous works show that sociality was affected negatively in an attractive shelter ( Calvo Martín et al., 2019 ; Günzel et al., 2021 ; Laurent Salazar et al., 2017 ). This is not observed in our experiments as the level of consensus is greater than 0.9 whatever the type of shelter and of individuals.…”

Section: Resultsmentioning

confidence: 95%

Consensus driven by a minority in heterogenous groups of the cockroach Periplaneta americana

et al. 2021

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Many 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.

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Section: Resultsmentioning

confidence: 95%

Consensus driven by a minority in heterogenous groups of the cockroach Periplaneta americana

et al. 2021

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“…In this context, our model relates to previous models of self-organized aggregation that have informed the development of robotic systems, such as models of cockroach aggregation in which individuals assess others already in a cluster ( 50 , 54 – 56 ) or corpse piling in ants, where individuals respond to corpses already deposited, and to other ants ( 57 , 58 ). However, the mechanism we have identified requires less complex sensing since the ants need only to respond to their own slipping and do not need to assess the size of a structure in place.…”

Section: Discussionmentioning

confidence: 98%

Individual error correction drives responsive self-assembly of army ant scaffolds

Lutz

Reid

Lustri

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

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An inherent strength of evolved collective systems is their ability to rapidly adapt to dynamic environmental conditions, offering resilience in the face of disruption. This is thought to arise when individual sensory inputs are filtered through local interactions, producing an adaptive response at the group level. To understand how simple rules encoded at the individual level can lead to the emergence of robust group-level (or distributed) control, we examined structures we call “scaffolds,” self-assembled by Eciton burchellii army ants on inclined surfaces that aid travel during foraging and migration. We conducted field experiments with wild E. burchellii colonies, manipulating the slope over which ants traversed, to examine the formation of scaffolds and their effects on foraging traffic. Our results show that scaffolds regularly form on inclined surfaces and that they reduce losses of foragers and prey, by reducing slipping and/or falling of ants, thus facilitating traffic flow. We describe the relative effects of environmental geometry and traffic on their growth and present a theoretical model to examine how the individual behaviors underlying scaffold formation drive group-level effects. Our model describes scaffold growth as a control response at the collective level that can emerge from individual error correction, requiring no complex communication among ants. We show that this model captures the dynamics observed in our experiments and is able to predict the growth—and final size—of scaffolds, and we show how the analytical solution allows for estimation of these dynamics.

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“…Consequently, the social context can result in preference inversion (Laurent Salazar et al (2017), Günzel et al (2021).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the presence of others at a resource patch may also indicate partial exploitation/depletion, competition, or - as observed by Bazazi et al (2008) - potential danger through cannibalism. Consequently, the social context can result in preference inversion (Laurent Salazar et al (2017), Günzel et al (2021). Optimal foraging decisions, therefore, require individuals within a group to obtain both classes of information and an evaluation of their reliability in conjunction with their acquisition costs (Dunlap et al (2016)).…”

Section: Introductionmentioning

confidence: 99%

“…For example, gregarious insects such as cockroaches and fruit flies collectively select resource patches without active recruitment (Lihoreau et al (2016(Lihoreau et al ( , 2010). In these cases, resource selection relies on retention effects -animals stay longer when more conspecifics are present (Amé et al (2006); Günzel et al (2021); Lihoreau et al (2010); Martín et al (2021)). The presence of others can indicate both location and quality of food, which offer discrete and graded information, respectively (Dall et al (2005)).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Information integration for nutritional decision-making in desert locusts

Günzel

Oberhauser

Couzin-Fuchs

2022

Preprint

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1AbstractSwarms of the migratory desert locust can extend over several hundred square kilometres, and starvation compels this ancient pest to devour everything in its path. Theory suggests that gregarious behaviour benefits foraging efficiency over a wide range of spatial food distributions. However, despite the importance of identifying the processes by which swarms locate and select feeding sites to predict their progression, the role of social cohesion during foraging remains elusive. We investigated the evidence accumulation and information integration processes that underlie locusts’ nutritional decision-making by employing a Bayesian formalism on high-resolution tracking data from foraging locusts. We tested individual gregarious animals and groups of different sizes in a 2-choice behavioural assay in which food patch qualities were either different or similar. We then predicted the decisions of individual locusts based on personally acquired and socially derived evidence by disentangling the relative contributions of each information class. Our study suggests that locusts balance incongruent evidence but reinforce congruent ones, resulting in more confident assessments when evidence aligns. We provide new insights into the interplay between personal experience and social context in locust foraging decisions which constitute a powerful empirical system to study local individual decisions and their consequent collective dynamics.

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Social modulation of individual preferences in cockroaches

Cited by 14 publications

References 59 publications

Consensus driven by a minority in heterogenous groups of the cockroach Periplaneta americana

Consensus driven by a minority in heterogenous groups of the cockroach Periplaneta americana

Individual error correction drives responsive self-assembly of army ant scaffolds

Information integration for nutritional decision-making in desert locusts

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