Evolution in time-dependent fitness landscapes
| dc.creator | Wilke, Claus O. | |
| dc.date | 1998-11-13 | |
| dc.date.accessioned | 2026-07-07T05:56:30Z | |
| dc.date.available | 2026-07-07T05:56:30Z | |
| dc.description | Evolution in changing environments is an important, but little studied aspect of the theory of evolution. The idea of adaptive walks in fitness landscapes has triggered a vast amount of research and has led to many important insights about the progress of evolution. Nevertheless, the small step to time-dependent fitness landscapes has most of the time not been taken. In this work, some elements of a theory of adaptive walks on changing fitness landscapes are proposed, and are subsequently applied to and tested on a simple family of time-dependent fitness landscapes, the oscillating NK landscapes, also introduced here. For these landscapes, the parameter governing the evolutionary dynamics is the fraction of static fitness contributions f_S. For small f_S, local optima are virtually non-existent, and the adaptive walk constantly encounters new genotypes, whereas for large f_S, the evolutionary dynamics reduces to the one on static fitness landscapes. Evidence is presented that the transition between the two regimes is a 2nd order phase transition akin a percolation transition. For f_S close to the critical point, a rich dynamics can be observed. The adaptive walk gets trapped in noisy limit cycles, and transitions from one noisy limit cycle to another occur sporadically. | |
| dc.description | 16 pages, 7 figures Latex | |
| dc.identifier | https://arxiv.org/abs/physics/9811021 | |
| dc.identifier | http://arxiv.org/abs/physics/9811021 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/87637 | |
| dc.subject | Biological Physics | |
| dc.subject | Adaptation and Self-Organizing Systems | |
| dc.subject | Quantitative Biology | |
| dc.title | Evolution in time-dependent fitness landscapes | |
| dc.type | text |