ORBi: Becco Christophe - Experimental evidences of a structural and dynamical transition in fish school

Reference : Experimental evidences of a structural and dynamical transition in fish school


	Document type :	Scientific journals : Article
	Discipline(s) :	Life sciences : Multidisciplinary, general & others
	To cite this reference:	http://hdl.handle.net/2268/6096

Title :	Experimental evidences of a structural and dynamical transition in fish school
Language :	English
Author, co-author :	Becco, Christophe [Université de Liège - ULg > Département de physique > Département de physique >]
	Vandewalle, Nicolas [Université de Liège - ULg > Département de physique > Physique statistique >]
	Delcourt, Johann [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale >]
	Poncin, Pascal [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale >]
Publication date :	2006
Journal title :	Physica A: Statistical Mechanics and its Applications
Publisher :	Elsevier
Volume :	367
Pages :	487-493
Audience :	International
ISSN :	0378-4371
Keywords :	[en] schools ; shoals ; interdistance ; transition ; polarization ; Oreochromis ; tilapia ; multitracking ; videotracking
Abstract :	[en] We have developed a video tracking system in order to determine all the trajectories of young fish (Oreochromis niloticus L.) within a school. Both individual and collective behaviours have been studied as a function of the number of fish per unit area. By studying distributions of distances between fish and distributions of relative orientations, structural effects and cooperative motions have been evidenced. Signatures of a phase transition have been found, as predicted by some numerical models. This work opens new perspectives in the study of collective phenomena in biological systems since it is the first time that such measurements are possible.
Research units :	Unité Biologie du comportement: Laboratoire d'éthologie des poissons et des Amphibiens ; Group for Research and applications in Statistical Physics
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/6096
DOI :	10.1016/j.physa.200511.041

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