Mc Hich R. auteur aut IRD Auger Pierre auteur aut IRD Lett Christophe auteur aut IRD text journalArticle eng text/pdf born digital access We present predator-prey models taking into account the individual behaviors of prey individuals and predators, which can use either grouped or solitary strategies. When prey individuals are grouped, they face less predation but have less access to the resource, which is shared with other individuals of the group. Groups of predators are more efficient to capture a prey than solitary ones. However, predators in groups must share captured prey with predators of their group. We study two models which differ in the way encounter rates are calculated. We present the effects of the different behavioral strategies on the overall dynamics of the predator-prey model. Next, we couple the fast theoretical game dynamics to a slow population dynamics model. We use aggregation methods to obtain the aggregated model. Such a model allow us to study the effects of the strategies selected by prey individuals and predators on the stability of the prey-predator system. Under some conditions, we show that, when aggregating, lonely preys can exclude cooperative predators. We also show how predators can coexist against aggregative preys, when changing strategy from solitary to cooperative. (c) 2006 Elsevier B.V All rights reserved. specialized predator prey model fast game dynamics slow population dynamics individual behaviors group solitary 040 036 197 3-4 281-289 2006 0304-3800 https://www.documentation.ird.fr/hor/fdi:010035763 10.1016/j.ecolmodel.2006.03.025 0304-3800 [F B010035763] https://www.documentation.ird.fr/hor/fdi:010035763 https://www.documentation.ird.fr/intranet/publi/2006/09/010035763.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2006-10-06 2017-08-23 fdi:010035763 fre