@article{fdi:010035578, title = {{E}ffect of aggressive behaviour on age-structured population dynamics}, author = {{C}hambon {D}ubreuil, {E}. and {A}uger, {P}ierre and {G}aillard, {J}.{M}. and {K}haladi, {M}.}, editor = {}, language = {{ENG}}, abstract = {{I}n this work, we present an age-structured population model that incorporates individual behaviour. {A} classical {L}eslie matrix model is used to describe the population demography. {A}dults acquire resources required to survive and reproduce by using two contrasted behavioural tactics (hawk versus dove). {I}ndividual survival depends on the average cost of fights while individual fecundity depends on the average gain in the competition to access the resource. {W}e investigated variation in fecundity according to the amount of resources available by using two functions: a {H}olling type function and a threshold function. {W}e aimed to assess the long-term effects of conflicting tactics of resource acquisition on population dynamics. {O}ur model includes two parts: a fast part that describes the encounters and fights involves a game dynamic model based upon the replicator equations in discrete time; and a slow part that describes the long-term effects of conflicting tactics on the population growth rate. {T}he use of aggregation methods allowed us to reduce the proposed initial model into an aggregated model that describes the dynamics of the population (a {L}eslie matrix model). {W}e analysed the effects of gain and cost parameters on the asymptotic growth rate of the total population. ({C}) 2005 {E}lsevier {B}.{V}. {A}ll rights reserved.}, keywords = {game dynamics ; {L}eslie model ; aggregation methods ; individual behaviour ; aggressiveness}, booktitle = {}, journal = {{E}cological {M}odelling}, volume = {193}, numero = {3-4}, pages = {777--786}, ISSN = {0304-3800}, year = {2006}, DOI = {10.1016/j.ecolmodel.2005.09.005}, URL = {https://www.documentation.ird.fr/hor/fdi:010035578}, }