TABLE 6.
Average nucleotide divergence for protein-coding genes between D. pulex and five of its congeners
| Ks | (SE) | Ka | (SE) | Ka/Ks | (SE) | |
|---|---|---|---|---|---|---|
| D. arenata | 0.00998 | 0.00345 | 0.00002 | 0.00002 | 0.0010 | 0.0016 |
| D. pulicaria | 0.00342 | 0.00380 | 0.00003 | 0.00002 | −0.0120 | 0.0080 |
| D. obtusa | 0.06338 | 0.02085 | 0.00141 | 0.00138 | 0.0163 | 0.0222 |
| D. ambigua | 0.12205 | 0.00825 | 0.00570 | 0.00570 | 0.0501 | 0.0476 |
| D. magna | 0.39928 | 0.05362 | 0.01093 | 0.01093 | 0.0316 | 0.0285 |
| D. mendotae | 0.21803 | 0.03903 | 0.00295 | 0.00295 | 0.0115 | 0.0131 |
Ka, number of nonsynonymous substitutions per nonsynonymous site; Ks, number of synonymous substitutions per synonymous site. For both Ka and Ks, mean within-species diversity (averaged between the two species being compared) was subtracted from raw estimates of divergence to get the net divergence between species.