Mariani P. auteur aut IRD Krivan V. auteur aut IRD MacKenzie B. R. auteur aut IRD Mullon Christian auteur aut IRD text journalArticle eng text/pdf born digital access Long-distance migration is a widespread process evolved independently in several animal groups in terrestrial and marine ecosystems. Many factors contribute to the migration process and of primary importance are intra-specific competition and seasonality in the resource distribution. Adaptive migration in direction of increasing fitness should lead to the ideal free distribution (IFD) which is the evolutionary stable strategy of the habitat selection game. We introduce a migration game which focuses on migrating dynamics leading to the IFD for age-structured populations and in time varying habitats, where dispersal is costly. The model predicts migration dynamics between these habitats and the corresponding population distribution. When applied to Atlantic bluefin tunas, it predicts their migration routes and their seasonal distribution. The largest biomass is located in the spawning areas which have also the largest diversity in the age-structure. Distant feeding areas are occupied on a seasonal base and often by larger individuals, in agreement with empirical observations. Moreover, we show that only a selected number of migratory routes emerge as those effectively used by tunas. specialized Structured population Ideal free distribution Game theory Habitat selection Bluefin tuna 036 020 9 2 219-232 2016 1874-1738 https://www.documentation.ird.fr/hor/fdi:010066870 10.1007/s12080-015-0290-8 1874-1738 [F B010066870] https://www.documentation.ird.fr/hor/fdi:010066870 https://www.documentation.ird.fr/intranet/publi/2016/06/010066870.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2016-06-29 2017-08-23 fdi:010066870 fre