Fig. 5

The evolution of the Nematode-Specific Peptide family, group F (NSPF) across the Elegans Supergroup. The orthologous nspf-1 and nspf-3 genes are shown in orange on the chromosome or scaffold to which they locate. The Chromosome IV gene anchors used to determine synteny are shown. For each orthologous group the mode coding sequence length (in base pairs), the mean amino acid sequence identity, and the alignment-wide estimate of the ratio of non-synonymous to synonymous substitutions (ω) are shown. The C. elegans orthologs are excluded from the mean identity and ω estimates as they show distinctly different patterns of evolution. The complete gene annotation list is provided in Additional file 3 and the sequences alignments are given in Additional file 6