Fig. 4From: 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 the cultured Oreochromis niloticus (n = 21) (open bar) and red hybrid tilapia (n = 25) (dark bar) (Chi square test, bootstrap 2 sample t test, *p < 0.05; **p < 0.005)Back to article page