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Table 3 Levels of cypermethrin and cyhalothrin resistance in different strains of Ae. aegypti

From: Relationship between insecticide resistance and kdr mutations in the dengue vector Aedes aegypti in Southern China

Insecticide Strain LC50 (ppm) (95 % CL) RRa Regression equations
Cypermethrin SS 0.00093 (0.00086–0.00100) 1 Y = 12.04407 + 3.97312X
  QS 0.00663 (0.00628–0.00701) 7.13 Y = 13.24042 + 6.07821X
  DF 0.00634 (0.00490–0.00927) 6.82 Y = 5.75003 + 2.61641X
  JH 0.03349 (0.02218–0.06264) 36.01 Y = 2.77811 + 1.88336X
  YD 0.02558 (0.02303–0.02834) 27.51 Y = 3.86610 + 2.42842X
  MN 0.08260 (0.07227–0.09338) 88.82 Y = 2.45754 + 2.26918X
Cyhalothrin SS 0.00091 (0.00079–0.00105) 1 Y = 7.75649 + 2.55102X
  QS 0.00568 (0.00531–0.00607) 6.24 Y = 9.59773 + 4.27341X
  DF 0.00439 (0.00382–0.00505) 4.82 Y = 7.39856 + 3.13863X
  JH 0.03879 (0.03518–0.04299) 42.63 Y = 4.90089 + 3.47272X
  YD 0.02794 (0.02530–0.03092) 30.70 Y = 3.79551 + 2.44265X
  MN 0.08087 (0.06909–0.09386) 88.87 Y = 2.59628 + 2.37709X
  1. SS susceptible strain, QS Qishui strain, DF Dongfang strain, JH Jinghan strain, YD Yundang strain, MN Munao strain
  2. aRR = resistance ratio. When the non-insecticide control was used, the percentage of natural mortality is 2.2 %, 1.1 %, 0 %, 1.1 %, 0 % and 0 % for SS, QS, DF, JH, YD and MN strain