Fig. 1

Phylogenetic relationships of Heterorhabditis strains (P5, P6 and PH) with 16 Heterorhabditis spp. based on ITS rDNA sequences. Caenorhabditis elegans (X03680) was used as the out-group taxa. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (10,000 replicates) is shown next to the branches