Phylogenetic patterns
All genera represented by at least two congener species in the dataset (i.e., Acartia, Calanus, Centropages, Metridia, Pseudocalanus andTemora ) were included into a Principal Coordinates Analysis based on Euclidean distances derived from Hellinger transformed peak intensities. The analysis was performed using the R-package ape (Paradis & Schliep, 2019).