Diversity of Mercury Resistant Escherichia coli Strains Isolated from Aquatic Systems in Rio de Janeiro, Brazil

Table 2

Genetic and phenotypic traits of E. coli strains carrying the 285 bp merA fragment according to aquatic systems and sampling sites.

E. coli strain	Aquatic system∗	Sampling site	MIC	RAPD profile
				A04	1247	1290	1254
RM 1	RWW	Canal do Mangue	10 µM	1	1	1	1
RM 7		Canal do Cunha	10 µM	2	2	2	2
RM 8		Canal do Cunha	10 µM	2	2	2	2
RM 9		Canal do Cunha	10 µM	2	2	2	2
RM 17		Rio Irajá	10 µM	3	3	3	3
RM 20		Rio Irajá	10 µM	4	4	4	4
RM 31	IWW	Rio Iguaçú	10 µM	5	5	5	5
RM 37	RWW	Lagoa Rodrigo de Freitas	10 µM	6	6	6	6
RM 44		Lagoa Rodrigo de Freitas	10 µM	6	6	6	6
RM 45		Lagoa Rodrigo de Freitas	10 µM	7	7	7	7
RM 46		Lagoa Rodrigo de Freitas	10 µM	8	6	6	6
RM 61		Lagoa de Marapendi	10 µM	9	8	8	8
RM 150	HWW	Lagoa de Jacarepaguá	10 µM	10	9	9	9
RM 165		Lagoa de Jacarepaguá	10 µM	11	10	10	10

∗RWW: residential wastewater; IW: industrial wastewater; HWW: hospital wastewater.