Optimal intermittence in search strategies under speed-selective target detection
Campos, Daniel (Universitat Autònoma de Barcelona. Departament de Física)
Méndez López, Vicenç (Universitat Autònoma de Barcelona. Departament de Física)
Bartumeus, Frederic (Centre d'Estudis Avançats de Blanes)
American Physical Society

Date:	2012
Abstract:	Random search theory has been previously explored for both continuous and intermittent scanning modes with full target detection capacity. Here we present a new class of random search problems in which a single searcher performs flights of random velocities, the detection probability when it passes over a target location being conditioned to the searcher speed. As a result, target detection involves an N-passage process for which the mean search time is here analytically obtained through a renewal approximation. We apply the idea of speed-selective detection to random animal foraging since a fast movement is known to significantly degrade perception abilities in many animals. We show that speed-selective detection naturally introduces an optimal level of behavioral intermittence in order to solve the compromise between fast relocations and target detection capability.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; Versió publicada
Published in:	Physical review letters, Vol. 108, Issue 2 (January 2012) , p. 28102, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.108.028102

4 p, 324.9 KB

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