Nematode species used in this study, with taxonomic information based on [53], [54]. Presence (+) or absence (−) of <i>map-1</i> genes as inferred from PCR analysis. TomalovaIva IachiaCathy MuletKarine Castagnone-SerenoPhilippe 2012 a<p>Clades were denominated according to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0038656#pone.0038656-Blaxter2" target="_blank">[55]</a>.</p>