University of Groningen Levy walks evolve through interaction between movement and environmental complexity de Jager,

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de Jager et al. (Reports, 24 June 2011, p. 1551) concluded that mussels Lévy walk. We confronted a larger model set with these data and found that mussels do not Lévy walk: Their movement is best described by a composite Brownian walk. This shows how model selection based on an impoverished set of candidate models can lead to incorrect inferences.

Lévy walks evolve through interaction between movement and environmental complexity.

Ecological theory predicts that animal movement is shaped by its efficiency of resource acquisition. Focusing solely on efficiency, however, ignores the fact that animal activity can affect resource availability and distribution. Here, we show that feedback between individual behavior and environmental complexity can explain movement strategies in mussels. Specifically, experiments show that mu...

Pii: S0168-8278(01)00103-9

Peter Olinga*, Marjolijn T. Merema, Marina H. de Jager, Frans Derks, Barbro N. Melgert, Han Moshage, Maarten J.H. Slooff, Dirk K.F. Meijer, Klaas Poelstra, Geny M.M. Groothuis Department of Pharmacokinetics and Drug Delivery, University Centre for Pharmacy, Ant. Deusinglaan 1, 9713 AV Groningen, The Netherlands Department of Internal Medicine, Division of Gastroenterology and Hepatology, Univer...