Moving together: Incidental leaders and naïve followers

Pillot, Marie Hélène; Gautrais, Jacques; Gouello, Jeanne; Michelena, Pablo; Sibbald, A. R.; Bon, Richard

doi:10.1016/j.beproc.2009.11.006

Cited by 66 publications

(51 citation statements)

References 35 publications

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“…When individuals face a choice between 2 mutually exclusive options (activities or target destinations), the individuals with the highest energetic requirements are predicted to initiate a change in activity and lead the group when there is an advantage to remaining coordinated Rands et al 2008;Sueur et al 2010b). Leadership by a single individual can therefore emerge as a consequence of heterogeneity within groups King et al 2009;Pillot et al 2010). This is supported by empirical examples in plains zebra (Equus burchellii) and chacma baboons (Papio ursinus), in which those with greatest motivation to perform a particular behavior act first (Fischhoff et al 2007;King et al 2008).…”

Section: Who Moves First?mentioning

confidence: 99%

Where Next? Group Coordination and Collective Decision Making by Primates

2011

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Primate groups need to remain coordinated in their activities and collectively decide when and where to travel if they are to accrue the benefits and minimize the costs of sociality. The achievement of coordinated activity and group decision making therefore has important implications for individual survival and reproduction. The aim of this special issue is to bring together a collection of empirical, theoretical, and commentary articles by primatologists studying this rapidly expanding topic. In this article, we introduce the contributions within the special issue and provide a background to the topic. We begin by focusing on decisions that involve a collective transition between a resting and a moving state, a transition we term making the move. We examine whether specific predeparture behaviors seen during transitions represent intentional processes or more simple response facilitation. Next we classify decisions according to the contribution of individual group members, and describe how, and why, certain individuals can have a disproportionate influence over group-mates' behavior. We then review how primate groups make decisions on the move. In particular, we focus on how variability in group size and spatial organization helps or hinders information transmission and coordination. We end with a discussion of new tools and methodology that will allow future investigators to address some outstanding questions in primate coordination and decision-making research. We conclude that a better integration of concepts and terminology, along with a focus on how individuals integrate environmental and social information, will be critical to developing a satisfactory understanding of collective patterns of behavior in primate systems.

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Section: Who Moves First?mentioning

confidence: 99%

Where Next? Group Coordination and Collective Decision Making by Primates

2011

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“…A single fixed camera can record 2D movements, in the laboratory (e.g. Aureli et al, 2012) or even outdoors (Pillot et al, 2010;Collett et al, 2013). 3D tracks in the field have been measured using multiple fixed cameras (Major and Dill, 1978;Pomeroy and Heppner, 1992;Ikawa et al, 1994;Budgey, 1998;Ballerini et al, 2008;Corcoran and Conner, 2012;Shelton et al, 2014).…”

Section: Comparison With Existing Tracking Methodsmentioning

confidence: 99%

3D tracking of animals in the field, using rotational stereo videography

Margerie

Simonneau

Caudal

et al. 2015

Journal of Experimental Biology

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We describe a method for tracking the path of animals in the field, based on stereo videography and aiming-angle measurements, combined in a single, rotational device. In open environments, this technique has the potential to extract multiple 3D positions per second, with a spatial uncertainty of <1 m (rms) within 300 m of the observer, and <0.1 m (rms) within 100 m of the observer, in all directions. The tracking device is transportable and operated by a single observer, and does not involve any animal tagging. As a video of the moving animal is recorded, track data can easily be completed with behavioural data. We present a prototype device based on accessible components that achieves about 70% of the theoretical maximal range. We show examples of bird ground and flight tracks, and discuss the strengths and limits of the method, compared with existing fine-scale (e.g. fixed-camera stereo videography) and largescale tracking methods (e.g. GPS tracking).

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“…To move forward requires more systematic combination of field observations with a modeling approach. This joint approach has been successfully applied for insect studies (Dussutour et al 2004;Mailleux et al 2010;Pillot et al 2010) but has rarely been applied in primate studies.…”

Section: Advantages and Disadvantages Of Modelsmentioning

confidence: 98%

All Together Now: The Need for a Combined Empirical and Modeling Approach When Studying Primate Group Coordination

Petit

2011

Int J Primatol

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Studies of collective decision making attempt to explain the simultaneous behaviors of many individuals and how these contribute to the behavior observed at a collective level. However, this can be problematic to achieve given the general constraints of field or experimental data. This is particularly the case for primates, and results in limited reproducibility of events and it is difficult to separate the effects of different variables. Advocates of theoretical models have proposed that simple rules of interaction successfully reproduce different phases of group movement and the transitions between them, and greatly contribute to our knowledge of complex phenomena. Models can simulate practically any situation and tell us what response would emerge from it, including complex situations such as group decision making. The general heuristic value of these models has been universally recognized. However, the modeling approach tends to oversimplify real situations, and very few biological validations yet exist. I here suggest that it is essential to confront theoretical results with real data and that the combination of the 2 approaches will substantially improve our comprehension of collective decision making.

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Moving together: Incidental leaders and naïve followers

Cited by 66 publications

References 35 publications

Where Next? Group Coordination and Collective Decision Making by Primates

Where Next? Group Coordination and Collective Decision Making by Primates

3D tracking of animals in the field, using rotational stereo videography

All Together Now: The Need for a Combined Empirical and Modeling Approach When Studying Primate Group Coordination

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