IJA -2016v6n3 - page 11

International Journal of Aquaculture, 2016, Vol.6, No.3, 1- 9
http://ija.biopublisher.ca
7
the sediment borne bacteria was also found to be higher as we found sediment offers better selection pressure for
drug resistant mutants (Hatha et al., 2015).
Table 3 MAR index, resistance pattern and percentage of occurrence of each pattern among the bacterial isolates from the gut of
Aplocheilus lineatus
MAR index Resistance pattern % Occurrence
0.09 Cpd 19.23
0.18 CepCpd
CpdNa
CNa
CbCp
26.92
7.69
3.84
3.84
0.27 CepCpdTr
CpdTeC
CepCpdSf
CepCpdNa
CpdCNa
11.53
3.84
3.84
3.84
3.84
0.36 CpdTeCTr
CpdCNaCip
CbCepCpdTr
3.84
3.84
3.84
Table 4 MAR index, resistance pattern and percentage of occurrence of each pattern among the bacterial isolates from the gut of
Etroplus maculatus
MAR index Resistant profile % Occurrence
0.09 Cpd 16.66
0.18 CbCpd
CpdC
CpdNa
CepCpd
20
3.33
6.66
3.33
0.27 CbCepCpd
CbCpdSf
CepCpdSf
CepCpdS
CbCpdNa
6.66
6.66
6.66
3.33
3.33
0.36 CbCepCpdNa
CbCepCpdTr
CepCpdSf
3.33
3.33
3.33
0.45 CepCpdSTeSf
CbCepCpdSfTr
3.33
3.33
0.54 CbCepCpdNaSfTr 3.33
0.63 CbCepCpdGenTeNaSf 3.33
5 Conclusion
Different patterns of antibiotic resistance were noted in bacterial isolates from the gut of A. lineatus and E.
maculatus, some of them showed multiple antibiotic resistance, indicating that fish gut bacteria may influenced by
its habitat. Further research is required to find out the source of selection pressure for antibiotic resistance
observed among these fish gut bacteria. Future research prospects include investigation of the gene responsible for
the antibiotic resistance and strategies to control/ reduce the selection pressure for the emergence of drug resistant
mutants in the natural environment.