Sample Output/Results

An 'info' file is generated with each simulation. Here is a sample of the contents:

The model tracks allele frequencies, population sizes, average fitness, and other metrics for all replicates. Here is a sample data file:

To look at the parameters of individual organisms, the model records the critter characteristics for any critter. Here is a sample of this file:

Speed and sensing range are two important factors of fitness in this model. Preliminary runs indicated that the ability to sense distant resources and/or fertile mates and the ability to reach attractive resources quickly were correlated with high reproductive output (i.e., fitness equals the number of eggs laid). At the start of simulation, the population has a 'flat' fitness distribution, since the speed and sensing range of critters is random at the start of simulation and selection has not had time to act. The following plots show fitness for the critters that died within the first 100 clock units of simulation.

Critters (n = 481) that died within first 100 clock units of the selection period. X-axis is sensing range (0-200), y-axis is speed (0-10), and z-axis is fitness (number of eggs laid, 0-28).


At the end of the selection period, critters under a low mutation rate (u = 0.01) demonstrate natural selection for speed and sensing range.

Critters (n = 1137) that died within last 100 clock units of selection period.


Copyright 2012