Figure 1.
Phylogenic tree of mollusks based on Stöger et al. (1). The occurrence of the different FMRFamide-like peptides (FLPs) in each class is detailed. Fa, FMRFa-related peptides or FaRPs; Lr, LFRFamide peptides; Lu, Luqin; Np, NPF; Cck, cholecystokinin-/sulfakinin-like peptides. The methodologies used for FLPs detection are indicated: I, immunohistochemistry; P, peptide identification; T, transcript characterization; G, genome.