Table 2 Resistance bioassay results of larval Aedes albopictus in urban, suburban and rural settings in Guangzhou, China. Sites in the same column connected by different letters represent a significant difference in resistance levels at P < 0.05

0.016 (0.009–0.026)

0.4

0.016 (0.010–0.026)^bc

16.0*

2.29 (1.58–3.06)^ab

2.6*

0.177 (0.159–0.198)

1.3

0.035 (0.030–0.040)

1.0

0.038 (0.032–0.046)^a

38.0*

3.29 (2.47–4.39)^a

3.7*

0.260 (0.227–0.301)

1.9

0.038 (0.024–0.058)

1.1

0.017 (0.014–0.022)^b

17.0*

1.52 (1.09–2.08)^c

1.7

0.109 (0.096–0.125)

0.8

0.016 (0.012–0.021)

0.4

0.011 (0.009–0.013)^c

11.0*

2.14 (1.89–2.40)^b

2.4*

0.099 (0.088–0.113)

0.7

0.014 (0.007–0.002)

0.4

0.014 (0.007–0.024)^bc

14.0*

1.41 (1.25–1.59)^c

1.6

0.145 (0.106–0.204)

1.1

0.014 (0.009–0.021)

0.4

0.022 (0.020–0.026)^b

22.0*

2.87 (2.53–3.19)^a

3.3*

0.217 (0.171–0.282)

1.6

0.036 (0.028–0.047)

1

0.001 (0.001–0.001)

1

0.879 (0.802–0.952)

1

0.134 (0.121–0.149)

1