Network metrics and community structure
We identified 42 meta-communities in the cichlid-Cichlidogyrusnetwork through the Louvain algorithm. Several detected meta-communities
that included only few species and were completely unconnected to the
other communities formed part of LT (Fig. 2a). Four
meta-communities other than LT and LV (Fig. 2b) included
10 or more species (Fig. 2c; Appendix S4): the ‘Coptodon zillii ’
(CZ ), ‘Oreochromis niloticus ’ (ON ),
‘Hemichromis ’ (He ), and ‘Tilapia sparrmanii ’
(TS ) clusters. These names reflect the host taxa accounting for a
majority of reported infections (Appendix S1.2). Network structure
differed between meta-communities but anthropogenic introductions had
only a limited effect (Fig. 3; Appendix S1.2).