Detection of Extended Spectrum Beta-Lactamases Resistance Genes among Bacteria Isolated from Selected Drinking Water Distribution Channels in Southwestern Nigeria
Table 1
Classes and families of selected bacteria.
Source
Class
Family
Number (% of total from source)
Raw water
α-Proteobacteria
Brucellaceae
1 (1.51)
β-Proteobacteria
Alcaligenaceae
9 (13.64)
Neisseriaceae
1 (1.51)
-Proteobacteria
Enterobacteriaceae
27 (40.91)
Moraxellaceae
2 (3.03)
Aeromonadaceae
6 (9.09)
Xanthomonadaceae
2 (3.03)
Flavobacteriia
Myroidaceae
1 (1.51)
Uncultured bacteria clone
3 (4.55)
Bacilli
Bacillaceae
10 (15.15)
Staphylococcaceae
3 (4.55)
Actinobacteria
Microbacteriaceae
1 (1.51)
Total raw water
66
Treated water
α-Proteobacteria
Caulobacteraceae
1 (3.03)
β-Proteobacteria
Alcaligenaceae
5 (15.15)
Neisseriaceae
1 (3.03)
-Proteobacteria
Enterobacteriaceae
10 (30.30)
Flavobacteriia
Myroidaceae
1 (3.03)
Uncultured bacteria clone
2 (6.06)
Bacilli
Bacillaceae
12 (36.36)
Staphylococcaceae
1 (3.03)
Total treated water
33
Municipal taps
α-Proteobacteria
Caulobacteraceae
1 (1.47)
β-Proteobacteria
Alcaligenaceae
7 (10.29)
Neisseriaceae
3 (4.41)
-Proteobacteria
Enterobacteriaceae
21 (30.88)
Moraxellaceae
6 (8.82)
Flavobacteriia
Myroidaceae
3 (4.41)
Uncultured bacteria clone
Bacilli
Bacillaceae
26 (38.24)
Staphylococcaceae
1 (1.47)
Total municipal tap
68
Note: identification was based on 16S rDNA sequencing. These bacteria were obtained from our previous works [3–5].