Table 4.

Detection of antimicrobial resistance genes in a total of 90 isolated strains of Escherichia coli from aquaculture farms in Zhanjiang, China.

Antimicrobial resistance genes	Number of resistance isolates	Detection rate %	Antimicrobial resistance genes	Number of resistance isolates	Detection rate %
blaCTX−M	40	44.44	aac(3)- II	10	11.11
blaTEM	50	55.55	Sul1	5	5.56
blaCIT	61	67.77	Sul2	59	65.56
blaKPC	4	4.44	tetM	14	15.56
blaDHA	41	45.55	tetC	28	31.11
blaNDM	54	60.00	tetA	20	22.22
blaIMP	22	24.44	ereA	1	1.11
floR	74	82.22	ermB	17	18.89
Cfr	10	11.11	oqxA	53	58.89
fexA	27	30.00	oqxB	8	8.89
fexB	32	35.56	qnrA	6	6.67
cat1	19	21.11	qnrS	66	73.33
OptrA	70	77.78	mcr1	41	45.56
cmlA	55	61.11	mcr2	0	0.00
aphA1	51	56.67