Host repertoire
Functional-phylogenetic distances (FPDist) were calculated for all
species of Cichlidogyrus with more than one host species
(Appendix S5) with the weighting parameter a between 0 and 1.
Plots for some species are shown in Fig. 4 to illustrate main patterns
observed throughout the lineage. Generally, FPDist decreased with
increasing phylogenetic weight (MPD or MNTD) as indicated by the falling
trend of FPDist estimates (Fig. 4). Observed MPD and MNTD showed a
significant pattern of underdispersion (clustering) compared to 1000
random simulations in some cases. Specifically, MPD metrics of FPDist
became mostly significant if the weight of phylogenetic distances
(PDist) increased (i.e. a → 1) (Fig. 4). In contrast, MNTD
estimates were largely non-informative regardless of a . One
exception is Cichlidogyrus sp. ‘nyanza’ (Gobbin et al.2021) with MNTD estimates being lowest for a → 0 (Fig. 4).