Table 2.

Characteristics of differentially methylated genes (DMGs) and non-DMGs in S. invicta.

trait	DMGs (mean ± s.e.; gene count)	non-DMGs (mean ± s.e.; gene count)	Mann–Whitney U-test p-value
fractional coding sequence methylation	0.186 ± 0.003; 2518	0.255 ± 0.005; 1705	<0.0001
fractional gene body (exons + introns) methylation	0.174 ± 0.002; 2521	0.240 ± 0.004; 1718	<0.0001
coding sequence length	1888.09 ± 31.07; 2518	1254.34 ± 29.27; 1705	<0.0001
gene body length	3869.21 ± 74.75; 2521	2483.83 ± 67.44; 1718	<0.0001
gene expression coefficient of variation	0.167 ± 0.002; 1068	0.160 ± 0.002; 836	0.0022
non-synonymous substitutions per non-synonymous site (dN)	0.033 ± 0.001; 1728	0.037 ± 0.001; 1012	0.0046
synonymous substitutions per synonymous site (dS)	0.344 ± 0.004; 1727	0.375 ± 0.005; 1012	<0.0001
dN/dS	0.101 ± 0.002; 1725	0.102 ± 0.003; 1012	0.7962