Self-replication and localized structures interaction in a nonlocal model of population dynamics

Daniel Escaff*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


A particular type of localized structure in a prototypical model for population dynamics interaction is studied. The model considers cooperative and competitive interaction among the individuals. Interaction at distance (or nonlocal interaction) and a simple random walk for the motion of the individuals are included. The system exhibits the formation of a periodic cellular pattern in some region of its parameter space. Inside this parameter region, it is possible to observe the localization of a single cell from the cellular pattern into an unpopulated background. The stability of this localized structure is discussed, as well as the destabilization process that gives rise to its own self-replication, inducing the propagation of the cellular pattern. The long distance interaction between these localized structures is also studied which results in a mutual repulsion.

Original languageEnglish
Pages (from-to)3509-3517
Number of pages9
JournalInternational Journal of Bifurcation and Chaos in Applied Sciences and Engineering
Issue number10
StatePublished - Oct 2009

Bibliographical note

Funding Information:
I would like to thank Prof. M. G. Clerc, V. M. Kenkre and P. Gutiérrez for stimulating discussions. The simulation software DIMX developed at the laboratory INLN in France has been used for numerical simulations. The author also acknowledges the financial support of FONDECYT (Project No. 3070013) and FAI (Project No. ICIV-003-08).


  • Localized structures
  • Population dynamic
  • Self-replication


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