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Title: Interplay between morphology and competition in two-dimensional colony expansion
In growing populations, the fate of mutations depends on their competitive ability against the ancestor and their ability to colonize new territory. Here we present a theory that integrates both aspects of mutant fitness by coupling the classic description of one-dimensional competition (Fisher equation) to the minimal model of front shape (Kardar-Parisi-Zhang equation). We solve these equations and find three regimes, which are controlled solely by the expansion rates, solely by the competitive abilities, or by both. Collectively, our results provide a simple framework to study spatial competition.  more » « less
Award ID(s):
2218849
PAR ID:
10478021
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
Physical Review E
Date Published:
Journal Name:
Physical Review E
Volume:
108
Issue:
3
ISSN:
2470-0045
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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