Browsing by Autor "J. L. Deneubourg"

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A simple game and its dynamical richness for modeling synchronization in firefly-like oscillators
(Springer Science+Business Media, 2022) Gonzalo Marcelo Ramírez-Ávila; Stéphanie Depickère; J. L. Deneubourg; Jürgen Kurths
Abstract Synchronization in pulse-coupled oscillators has been broadly studied under different perspectives. We present a game with simple rules to describe synchronization in such kinds of oscillators. This game, intended to describe easily how fireflies synchronize, constitutes a discrete model different from those based on maps, ordinary differential equations, or multi-agent systems. Our results on complete synchronization depend strongly on the used rules that we compare statistically. We also calculate the basins of attraction to quantify the importance of the initial conditions in reaching or not synchronization and the time intervals required for that.
Alteration of the social and spatial organization of the vector of Chagas disease, <i>Triatoma infestans</i> , by the parasite <i>Trypanosoma cruzi</i>
(2018) Stéphanie Depickère; Gonzalo Marcelo Ramírez-Ávila; J. L. Deneubourg
Abstract Insects of Triatominae subfamily are vectors of the parasite Trypanosoma cruzi , the etiological agent of Chagas disease affecting millions of people in Latin America. Some of these vector species, like Triatoma infestans , live in the human neighborhood, aggregating in walls or roof cracks during the day and going out to feed on animal or human blood at night. Except for their feeding specialization, these insects share this cycle of activities with many gregarious arthropod species. The understanding of how sex and T. cruzi infection affect their aggregation and geotaxis behavior is essential for understanding the spatial organization of the insects and the parasite dispersion. Experiments with non-infected and infected adults of T. infestans show that the insects presented a high negative geotaxis and aggregative behavior. Males had a higher negative geotaxis and a higher aggregation level than females. The aggregation level and the negative geotaxis were stronger in infected insects than in non-infected ones, the difference between sexes being maintained. The importance of these results is discussed in term of parasitic manipulation, dispersion of the vector and strategy of its monitoring.
Fireflies: A Paradigm in Synchronization
(Springer Nature, 2017) Gonzalo Marcelo Ramírez-Ávila; Jürgen Kurths; J. L. Deneubourg
Firefly courtship as the basis of the synchronization-response principle
(Institute of Physics, 2011) Gonzalo Marcelo Ramírez-Ávila; J. L. Deneubourg; Jean‐Luc Guisset; Niels Wessel; Jürgen Kurths
Response to synchronization seems to be a widespread phenomenon specially in biological systems. We highlight this phenomenon studying the courtship of flashing fireflies in which a typical collective rhythm occurring only among the males arises and it is followed by a response of the females. Based on a model issued from electronic fireflies, we explain the synchronization of the males and the active responses of the females in the courtship of mingled (both sexes) populations of fireflies. The model also explains the courtship behavior of other species whose interactions follow the same logic even if their physical features are different. Moreover, the model can make predictions on the behavior of mingled and mixed (natural and artificial) groups of such animals. This finding could be considered as the basis of a new principle, namely the synchronization-response. © Europhysics Letters Association, 2011.
How do small differences in nonidentical pulse-coupled oscillators induce great changes in their synchronous behavior?
(Springer Science+Business Media, 2014) Gonzalo Marcelo Ramírez-Ávila; Jürgen Kurths; Jean‐Luc Guisset; J. L. Deneubourg
Synchronization in chains of light-controlled oscillators
(IOP Publishing, 2005) Gonzalo Marcelo Ramírez-Ávila; Jean‐Luc Guisset; J. L. Deneubourg
info:eu-repo/semantics/published
Synchronization in light-controlled oscillators
(Elsevier BV, 2003) Gonzalo Marcelo Ramírez-Ávila; Jean‐Luc Guisset; J. L. Deneubourg
When does noise destroy or enhance synchronous behavior in two mutually coupled light-controlled oscillators?
(American Physical Society, 2010) Gonzalo Marcelo Ramírez-Ávila; Jürgen Kurths; Jean‐Luc Guisset; J. L. Deneubourg
We study the influence of white gaussian noise in a system of two mutually coupled light-controlled oscillators (LCOs). We show that under certain noise intensity conditions, noise can destroy or enhance synchronization. We build some Arnold tonguelike structures in order to explain the effects due to noise. It is remarkable that noise-enhanced synchronization is possible only when the variances of the noise acting on each of the LCOs are different.