Aurélie Buffin

Learn More
In social insects, the foraging activity usually increases with the length of food deprivation. In Lasius niger, a mass-recruiting ant species, the foraging adjustment to the level of food deprivation is regulated by the scout that fed at the food source and by the response of the nestmates to signals performed by the scout inside the nest. In this study,(More)
In this paper, we present an approach to designing decentralized robot control policies that mimic certain microscopic and macroscopic behaviors of ants performing collective transport tasks. In prior work, we used a stochastic hybrid system model to characterize the observed team dynamics of ant group retrieval of a rigid load. We have also used(More)
While food recruitment and foraging have been the subject of many studies, the regulation of the food sharing behaviour remains poorly understood. In this study, we focused on trophallaxis (or mouth-to-mouth food exchange) within a group of worker ants as the first step in characterizing food sharing behaviours. In particular, we wanted to investigate the(More)
Collective food transport in ant colonies is a striking, albeit poorly understood, example of coordinated group behavior in nature that can serve as a template for robust, decentralized multi-robot cooperative manipulation strategies. We investigate this behavior in Aphaenogaster cockerelli ants in order to derive a model of the ants' roles and behavioral(More)
Food sharing is vital for a large number of species, either solitary or social, and is of particular importance within highly integrated societies, such as in colonial organisms and in social insects. Nevertheless, the mechanisms that govern the distribution of food inside a complex organizational system remain unknown. Using scintigraphy, a method(More)
The organization of complex societies requires constant information flow between individuals. The shape of the food web organizes itself according to the spatial distribution of the individuals and of the stocks. To understand how the spatial organization of the food stocks changes with the colony needs, we monitored the flow of radiolabeled sugar solution(More)
While most ant species carry burdens solitarily, a few have evolved impressive skills at cooperative transport that are important to their ecological success. We examined one of these species, Novomessor cockerelli, with the goals of better understanding how transport groups are coordinated and how cooperation influences the efficiency of load transport.(More)
  • 1