Fig. 2From: 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 distributionPrevalence (a) and mean intensity (b) of monogeneans on the gills of wild (n = 25) (open bar) and cultured Oreochromis niloticus (n = 21) (dark bar) (Chi square test; bootstrap 2 sample t test, **p < 0.005)Back to article page