Table 6. Genes with sites evolving under positive selection in Steinernema carpocapsae (Sc), Panagrellus redivivus (Pr), and Strongyloides ratti (Sr).

Orthologue genes analysed by the Branch-site test	N = 2,034
Tested branch	Sc	Pr	Sr
Genes with sites under positive selection (ω > 1, LRT, p < 0.05)	83 (4.08%)	95 (4.67%)	8 (0.39%)
Average proportion of sites under positive selection per gene (s.d.)	6.49% (0.067)	7.47% (0.093)	17.31% (0.187)