Acta Biotheoretica 45 (3-4) (1997)
|Abstract||Two populations are subdivided into two categories of individuals (hawks and doves). Individuals fight to have access to a resource which is necessary for their survival. Conflicts occur between individuals belonging to the same population and to different populations. We investigate the long term effects of the conflicts on the stability of the community. The modelis a set of ODE's with four variables corresponding to hawk and dove individuals of the two populations. Two time scales are considered. A fast time scale is used to describe frequent encounters and fightings between individuals trying to monopolize the resource. A slow time scale is used for the demography and the long term effects of encounters. We use aggregation methods in order to reduce this model into a system of two ODE's only for the total densities of the two populations which is found to be a classical Lotka-Volterra competition model. We study different cases of proportions of hawks and doves in both populations on the global coexistence and the mutal exclusion of the two populations. Pure dove tactics in both populations are unstable. In cases of mixed hawk and dove in both populations, there is coexistence. Pure dove or mixed hawk-dove tactics in one population can coexist with pure hawks in the other one when the costs of fightings between hawks are large enough.|
|Keywords||No keywords specified (fix it)|
|Through your library||Configure|
Similar books and articles
Moulay Lhassan Hbid (forthcoming). Individual Based Model for Grouper Populations. Acta Biotheoretica.
B. W. Kooi (2003). Numerical Bifurcation Analysis of Ecosystems in a Spatially Homogeneous Environment. Acta Biotheoretica 51 (3).
Pierre Auger & Jean-Christophe Poggiale (1996). Aggregation and Emergence in Hierarchically Organized Systems: Population Dynamics. Acta Biotheoretica 44 (3-4).
Ángel Blasco, Luis Sanz, Pierre Auger & Rafael Bravo de la Parra (2002). Linear Discrete Population Models with Two Time Scales in Fast Changing Environments II: Non-Autonomous Case. Acta Biotheoretica 50 (1).
David Queller (2011). A Gene's Eye View of Darwinian Populations. Biology and Philosophy 26 (6):905-913.
Carl T. Bergstrom & Peter Godfrey-Smith (1998). On the Evolution of Behavioral Complexity in Individuals and Populations. Biology and Philosophy 13 (2):205-31.
Pierre M. Auger & Bruno Faivre (1993). Effects of Individual Activity Sequences on Prey-Predator Models. Acta Biotheoretica 41 (1-2).
Luis Sanz & Rafael Bravo de la Parra (2002). The Reliability of Approximate Reduction Techniques in Population Models with Two Time Scales. Acta Biotheoretica 50 (4).
Sorry, there are not enough data points to plot this chart.
Added to index2009-01-28
Recent downloads (6 months)0
How can I increase my downloads?