International Journal of Microbiology

Research Article

Identifying Bacteria with Public Health Significance from Farmed Nile Tilapia (Oreochromis niloticus), Zambia

Table 3

Biochemical characteristics of bacterial isolates isolated from tilapia (Oreochromis niloticus) and water samples from farms A, B, and C.
Bacterial isolatesTests conducted
GMCMHOxCatEscGalRafSalMalXylManTreInuSorLacUreaGluSuclacgH2SCitsulmotIndMR
Acinetobacter spp.−Rodsβ++−−−−−−−−−−−−−−−−−+−−−−
Aequorivita spp.−Rods   −−−−−−−−−−−−+−−−−+−−−−
Aerococcus spp.+Cocciα ++++−++++−++++++−−−−+−−
Aeromonas spp.−Rodsβ++−+−−+−−+−−−−+++−−−−++−
Bacillus spp.+Rodsβ +−−−−−−−−−−−−−−−−−+−+−−
Bordetella spp.−Rods ++−—−−−−−−−−−++−−−++−+−−
Carnobacterium spp.+Rodsα−−−−−−−−−−−−−−−−−−−−−−−−
Citrobacter spp.−Rods −+−−−−−−−−−−−+−−−−−+−+−+
Clostridium spp.+Cocci  −−−−−−−−−−−−−−−−−−+−−−+
Corynebacterium spp.+Rodsβ−+−−−−−−−−−−−+−−−−−−−−−−
Dermatophilus spp.+Cocciβ +−−−−−−−−−−−++−−−−+−+−−
Enterococcus spp.+Cocci −−−−−−−−−−−−+−+−−−−+−−−−
Escherichia coli spp.−Rods −+++++++++−−+−+++−−−−+−+
Flavobacterium spp.−Rods ++−+−−+−−+−−+−++++−−−+−−
Klebsiella spp.+Rods   −++−++++−++−+++++++++−
Lactococcus spp.+Cocciα−−−+−−−−−−−−−++++−−−−+−+
Lactococcus/Streptococcus spp.+Cocci −−−−−−+−−−−−−−+++−−−−+−+
Listeria spp.+Rods   −+−−+−++−−−−++++−+−++−
Micrococcus spp.+Cocci ++−−−−−−−−−−−−−−−−−−−−−−
Planococcus spp.+Cocci −+−−−−−−−−−−−++++−−−−+−−
Proteus spp.−Rods −+++−++−++−−−−+++−−−−++−
Pseudomonas spp.−Rods ++−−−−−−−−−−−−−−−−−+−+−−
Rhodococcus spp.+Rods −−−−−−−+−−−−−+−−−−−−−−−−
Shewanella spp.−Rodsβ++−−−−−−−−−−−−+++−−+−+−−
Staphylococcus spp.+Cocciβ−+−+−−++++−+−−++++−−−−+−
Streptococcus spp.+Cocciβ−−−−−−+−−+−−−−+++−−−−−−−
Vagococcus spp.+Cocciα−−−+−−−+−−−−−−+−−−−+−−−−
Unidentified 1+Cocci   ++−−−−−−−−−−+++−−+−+−+
Unidentified 2+Rods   −+−−+−−+−++−+++−−+−+−+
Unidentified 3+Cocci   +++−+−−+−+−++++−−+−+−-
Unidentified 4−Rods   +−−−−−−−−−−−−−−−−−−++-
Unidentified 5+Cocci   −−−−+−−−−−−−−−−−−−−−−-
Unidentified 6+Cocci   −−+−+−−+−+−++++−−−−+−+
Unidentified 7−Cocci   −−−−−−−−−−−+−−−−−−−+−+
Unidentified 8+Rods   −−−−+−+−−−−−+++−−−−−−-
Unidentified 9+Cocci   −−−−−−−−−−−−+−+−−−−−−-
GM = Gram stain, CM = cell morphology, H = hemolysis, Cat = catalase, Ox = oxidase, Esc = esculin, Gal = galactose, Raf = raffinose, Sal = salicin, Mal = maltose monohydrate, Xyl = xylose, Man = mannitol, Tre = trehalose, Inu = inulin, Sor = sorbitol, Lac = lactose monohydrate, Urea = urease, Glu = glucose, Suc = = sucrose, lac = lactose, g = gas production, H2S = production of hydrogen sulphide, Cit = citrate, Sul = sulphur, Mot = motility, Ind = indole, and MR = methyl red.