Figure 4: Dietary niche
partitioning within and among individual samples ofCampylomormyrus and its sister genus Gnathomemus by nMDS
of RRA-based Bray–Curtis dissimilarity indices of samples on the order
level (adonis: comparison across EOD phenotypes F = 5.34,
R2 = 0.182, p ≤ .002; across snout phenotypes F =
2.50, R2 = 0.179, p ≤ .002). The symbols represent the
species and the colors represent snout length. The shaded convex hulls
indicate short vs. long EOD. The stress level of 0.152 is under the
cut-off value of 0.2 as recommended by Clarke (1993) to indicate an
interpretable ordination.