Fig. 3From: Gill monogeneans of Nile tilapia (Oreochromis niloticus) and red hybrid tilapia (Oreochromis spp.) from the wild and fish farms in Perak, Malaysia: infection dynamics and spatial distributionIndex of dispersion, I (Variance/mean) of the six species of monogeneans on the gills of the wild (solid line) and cultured Oreochromis niloticus (dashes line)Back to article page