Publications des scientifiques de l'IRD

Mariani P., Krivan V., MacKenzie B. R., Mullon Christian. (2016). The migration game in habitat network : the case of tuna. Theoretical Ecology, 9 (2), p. 219-232. ISSN 1874-1738.

Titre du document
The migration game in habitat network : the case of tuna
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000374584100009
Auteurs
Mariani P., Krivan V., MacKenzie B. R., Mullon Christian
Source
Theoretical Ecology, 2016, 9 (2), p. 219-232 ISSN 1874-1738
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.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Ecologie, systèmes aquatiques [036]
Localisation
Fonds IRD [F B010066870]
Identifiant IRD
fdi:010066870
Contact