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Table 3 Tests of the nested demographic models

From: Lineage isolation in the face of active gene flow in the coastal plant wild radish is reinforced by differentiated vernalisation responses

Model Log(P) df 2LLR p
θ A θ S θ N m S = m N 7.405 1 10.38 **
θ A θ S θ N m S = 0 m N 10.03 1a 5.136 *
θ A θ S θ N m S m N = 0 8.692 1a 7.805 **
θ A θ S θ N m S = 0 m N = 0 −2066 2a 4157 **
θ A θ S = θ N m S m N 10.18 1 4.837 *
θ A θ S = θ N m S = m N 7.626 2 9.936 **
θ A θ S = θ N m S = 0 m N 6.952 2a 11.28 **
θ A θ S = θ N m S m N = 0 0.9607 2a 23.27 **
θ A θ S = θ N m S = 0 m N = 0 −2084 3a 4192 **
θ A = θ S θ N m S m N 3.166 1 18.86 **
θ A = θ S θ N m S = m N 0.5361 2 24.12 **
θ A = θ S θ N m S = 0 m N −89.13 2a 203.5 **
θ A = θ S θ N m S m N = 0 −148.7 2a 322.5 **
θ A = θ S θ N m S = 0 m N = 0 −2723 3a 5472 **
θ S θ A = θ N m S m N −11.45 1 48.1 **
θ S θ A = θ N m S = m N −17.2 2 59.59 **
θ S θ A = θ N m S = 0 m N −227.4 2a 480 **
θ S θ A = θ N m S m N = 0 −65.72 2a 156.6 **
θ S θ A = θ N m S = 0 m N = 0 −3210 3a 6445 **
θ A = θ S = θ N m S m N −34.8 2 87.86 **
θ A = θ S = θ N m S = m N −42.18 3 102.6 **
θ A = θ S = θ N m S = 0 m N −236.9 3a 492.1 **
θ A = θ S = θ N m S m N = 0 −171.5 3a 361.2 **
θ A = θ S = θ N m S = 0 m N = 0 −3238 4a 6494 **
  1. 24 nested models (no migration and equal population size) were compared to the full model (significant migration and different population size; θ A, θ S, θ N, mS and mN). ‘Log (P)’ is the posterior probability of the model given data; ‘2LLR’ = 2× (Log(P)nested model-Log(P)full model), ‘df’ is the difference in number of parameters between nested and full model except where marked with a (in which case models have distributions of 2LLR that are a mixture), ‘p-value’ is the probability of achieving the test statistic (2LLR) by chance under the null model. The models with p < 0.05 represent rejection of the models.*, p < 0.05; **, p < 0.01
  2. θ A, θ S, θ N are the effective population sizes of ancestral population, southern population and northern populations, respectively. m S and m N are the gene flow from northern to southern lineage and southern to northern lineage, respectively