How Group Size Affects Vigilance Dynamics and Time Allocation Patterns: The Key Role of Imitation and Tempo

Michelena, Pablo; Deneubourg, Jean‐Louis

doi:10.1371/journal.pone.0018631

Cited by 33 publications

(29 citation statements)

References 50 publications

(53 reference statements)

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“…To achieve an equivalent task at a comparable rate and standard, individuals in smaller groups should work harder than those in larger groups. For example, to attain the same level of predator awareness, individuals in smaller groups need to invest more effort in collective vigilance [62]. However, at present we have a limited understanding of how the behaviour of individuals is modified and compiled in groups of different size.…”

Section: Discussionmentioning

confidence: 99%

Ants work harder during consensus decision-making in small groups

Cronin

Stumpe²

2014

J. R. Soc. Interface.

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Individuals derive many benefits from being social, one of which is improved accuracy of decision-making, the so-called 'wisdom of the crowds' effect. This advantage arises because larger groups can pool information from more individuals. At present, limited empirical data indicate that larger groups outperform smaller ones during consensus decision-making in human and non-human animals. Inaccurate decisions can lead to significant costs, and we might therefore expect individuals in small groups to employ mechanisms to compensate for the lack of numbers. Small groups may be able to maintain decision accuracy if individuals are better informed than those in larger groups and/or by increasing the proportion of the group involved in collective decision-making relative to larger groups. In this study, we use interactive computer vision software to investigate individual contributions to consensus decision-making during house-hunting in different sized groups of the ant Myrmecina nipponica. We show that individuals in small colonies invest greater effort in the consensus decision process than those in large colonies and should be better informed as a result. This may act to ameliorate the limitations of group size, but could leave smaller groups more susceptible to additional stresses.

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Section: Discussionmentioning

confidence: 99%

Ants work harder during consensus decision-making in small groups

Cronin

Stumpe²

2014

J. R. Soc. Interface.

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“…Group size effect has been reported in Tibetan antelope (Lian et al 2007), Tibetan gazelle (Li & Jiang 2008), asiatic ibex (Xu et al 2010), svalbard reindeer (Reimers et al 2011), and goitered gazelle (Xia et al 2011). Several hypotheses have been proposed to explain the mechanism of group size effect including: collective vigilance (Ebensperger et al 2006;Pays et al 2007), detection and dilution (Fairbanks & Dobson 2007;Li & Jiang 2008;Li et al 2012), and social facilitation (Michelena & Deneubourg 2011).…”

Section: Hayati J Bioscimentioning

confidence: 99%

The Time Budget of Javan Deer ( Rusa timorensis , Blainville 1822) in Panaitan Island, Ujung Kulon National Park, Banten, Indonesia

Pairah¹,

Santosa

Prasetyo

et al. 2014

HAYATI Journal of Biosciences

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Javan deer that exist in Panaitan Island was reintroduced from Peucang Island during 1978-1982. We observed behavior of the reintroduced Javan deer inhabiting Panaitan Island. Javan deer in this island spent most of their diurnal time for feeding. There were no significant differences between all age-sex variation for all activities pattern. The behavior of Javan deer was influenced by age, sex, social group, temperature, and food availability.

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“…,b, ; Beauchamp ; Ge et al. ; Michelena & Deneubourg ; Öst & Tierala ; Podgórski et al. ) although not in every case (Favreau et al.…”

Section: Introductionmentioning

confidence: 99%

Collective Vigilance in the Wintering Hooded Crane: The Role of Flock Size and Anthropogenic Disturbances in a Human‐Dominated Landscape

Beauchamp

Zhen

et al. 2016

Ethology

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Vigilance achieved at the group level, known as collective vigilance, can enhance the ability to assess threats and confer benefits to gregarious prey species. Examining the factors that influence collective vigilance and exploring how individual vigilance is organized at the group level can help to understand how prey groups respond to potential threats. We quantified collective vigilance and determined its temporal pattern in a natural wintering population of the hooded crane Grus monacha in the Shengjin Lake reserve in China. We examined the role of flock size and anthropogenic disturbances in the human‐dominated landscape on collective vigilance and level of synchronization. The proportion of time during which at least one individual scanned the surroundings (collective vigilance) increased with flock size and was higher in the more disturbed buffer zone of the lake. Synchronization of vigilance occurred more frequently in the smaller flocks but was not related to the risk of disturbance. Synchronization implies that individuals tend to monitor and copy the vigilance of neighbors. In the degraded wetlands, the wintering hooded crane benefits from foraging in groups and synchronizing their vigilance in response to human disturbances.

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How Group Size Affects Vigilance Dynamics and Time Allocation Patterns: The Key Role of Imitation and Tempo

Cited by 33 publications

References 50 publications

Ants work harder during consensus decision-making in small groups

Ants work harder during consensus decision-making in small groups

The Time Budget of Javan Deer ( Rusa timorensis , Blainville 1822) in Panaitan Island, Ujung Kulon National Park, Banten, Indonesia

Collective Vigilance in the Wintering Hooded Crane: The Role of Flock Size and Anthropogenic Disturbances in a Human‐Dominated Landscape

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