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. 2006 Jun 12;62(7):673–677. doi: 10.1002/ps.1230

Table 2.

Toxicity of cyfluthrin to lesser mealworm larvae from six strains

Strain n LC50(µg cm−2) (95% CI) LC95(µg cm−2) (95% CI) RR50 a RR95 b Slope (SE)
Denmark‐S 640 0.015 (0.013–0.017) 0.061 (0.048–0.085) — — 2.7 (0.2)
Kennebec 844 0.187 (0.16–0.22) 1.74 (1.29–2.51) 12* 29* 1.7 (0.1)
Waycrossc 551 0.013 (0.009–0.017) 0.343 (0.197–0.731) 0.9 5.6* 1.2 (0.1)
Cayuga 627 0.008 (0.005–0.010) 0.122 (0.081–0.224) 0.5 2.0 1.4 (0.2)
Onondaga 384 0.013 (0.010–0.017) 0.095 (0.063–0.176) 0.9 1.6 1.9 (0.2)
Wayne 397 0.004 (0.006–0.012) 0.030 (0.014–0.060) 0.3* 0.5 2.1 (0.4)
a

Resistance ratio at LC50 (i.e. LC50 resistant strain/LC50 Denmark‐S).

b

Resistance ratio at LC95 (i.e. LC95 resistant strain/LC95 Denmark‐S).

c

Cricket colony collection, all others (except Denmark‐S) are from caged‐layer poultry facilities.

*

Significantly different from 1.0 based on non‐overlap of 95% CI.

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