Table 2: Estimates of parameters to explain the trajectories of the MT:LT ratios over time in communities A–J

From: Speedy speciation in a bacterial microcosm: new species can arise as frequently as adaptations within a species

CommunityRelative likelihoodParameter estimates
 Null modelSingle-ecotype modelMulti-ecotype modelWait time (tw)Slope of MT:LT ratio change (m)End MT:LT ratio (log r)
A0.31*1.163.92NANANA
B<1.00E−14270.805886.10*6−0.44−2.10
C3.41E−1122.10E−8*2.10E−83−0.18NA
D2.08E−514.22E−102.90E−6*5−0.34−1.00
E<1.00E−1428.19E−188.81E−14*1−0.22−2.20
F2.03E−733.13E−410.53*60.720.90
G8.70E−851.38133.09*9−0.86−2.10
H1.10E−3171.247312.20*70.380.70
I3.21E−1422.34E−80.50*40.301.30
J2.07E−801.70E−6*1.95E−65−0.28NA
  1. Each trajectory of log10-transformed ratios was analyzed under each of three evolutionary models. The relative likelihood values are based on the deviation of each observed ratio from that expected under each model, assuming independent deviations of each time point from the model’s expectation. Entries with asterisks indicate the most complex model consistent with observed data, based on likelihood ratio tests. The parameters represent the number of transfers for which the initial ratio is maintained (tw, wait time), the slope (m) of the MT:LT ratio after the wait time has been reached and the ratio (r) at which the slope levels off (all based on log10-transformed ratios).