Figure 5: Bactericidal activity. P. aeruginosa, A. baumannii and E. coli k1 were inhibited by Ozius rugulosus (Metnanol gills extracts). Gills tissues had the overall best activity for all three selected bacteria and selected gut tissues (Perna viridis and Nerita albicilla). Methanol solvent (negative control) showed very low activity against all 3 selected bacteria.