Table 1: LD50 and the RR value of the five insecticides in the house flies in Zhejiang Province, China (LD50, μg/fly).

CityYearDichlorvosPropoxurPermethrinDeltamethrinBeta-cypermethrin
LD5095% CIRRLD5095% CIRRLD5095% CIRRLD5095% CIRRLD5095% CIRR

Susceptible strain20170.77810.7018–0.86260.15500.1395–0.17220.01080.0092–0.01270.00070.0006–0.00090.00900.0074–0.0109
20140.04530.0371–0.05770.29730.2493–0.35430.01080.0092–0.01270.00090.0008–0.00110.00360.0030–0.0043
20110.09620.0851–0.10760.04580.0396–0.05240.01240.0109–0.01390.00190.0017–0.00230.01170.0103–0.0132
Hangzhou20171.06120.9162–1.23211.36388.80947.4675–10.377856.83480.07770.0667–0.0904111.00000.19880.1725–0.230222.0889
20140.32900.2832–0.38307.2627>400.0000>1345.44230.06960.0605–0.079977.33330.20010.1741–0.230855.5833
20111.47491.2368–1.758815.33160.26610.2303–0.30735.81000.10450.0776–0.140755.00000.93990.7312–1.208180.3333
Huzhou201740.409029.8130–62.178751.932923.877419.7867–29.2366154.04770.06790.0517–0.08896.28700.11000.0781–0.1474157.14290.32240.1954–0.460035.8222
20140.00530.0048–0.00600.11700.02810.0203–0.04090.09450.00280.0010–0.00450.25930.00210.0019–0.00242.33330.01000.0089–0.00112.7778
20110.50960.4477–0.58025.29730.17630.1384–0.22453.84930.20010.1622–0.246816.13710.01050.0088–0.01275.52630.01560.0127–0.01931.3333
Jiaxing20170.47430.2437–1.26150.60960.56540.2113–3.32263.64770.08780.0451–0.22638.12960.00740.0045–0.011810.57140.01460.0082–0.02651.6222
20140.67460.3206–2.142014.89180.35630.1542–1.45831.19850.04330.0252–0.08944.00930.00520.0031–0.00745.77780.00820.0051–0.14502.2778
20110.02320.1284–0.50670.24120.02320.0158–0.03540.50660.01050.0016–0.10385.52630.10360.0751–1.49008.8547
Jinhua20170.59340.4955–0.69660.76260.68380.5346–0.74994.41160.11990.0867–0.129411.10190.02040.0179–0.025529.14290.06910.0513–0.07507.6778
20140.54910.4637–0.650412.12140.40880.3342–0.49131.37500.09680.0684–0.12418.96300.01820.0154–0.021620.22220.05410.0442–0.065915.0278
20111.06510.9050–1.240111.07170.13210.1082–0.158910.65320.02200.0190–0.025511.57890.09020.0758–0.10687.7094
Lishui2017>121.5000>783.87100.41060.3796–0.446238.01850.02880.0129–0.065441.14290.00300.0014–0.00660.3333
Ningbo20140.00960.0026–0.04900.21190.02950.0115–0.05120.09920.00480.0012–0.00910.44440.00530.0015–0.12705.88890.00220.0003–0.01290.6111
20110.00560.0013–0.02800.05820.01150.0091–0.02700.25110.00120.0008–0.00100.09680.00540.0016–0.12712.84210.00220.0003–0.01290.1880
Quzhou20170.31610.2561–0.40020.40620.31300.2525–0.384728.98150.04910.0414–0.058670.14290.21900.1833–0.270624.3333
Shaoxing20173.11752.8063–3.46634.00660.18050.1548–0.209016.71300.06460.0577–0.072792.28570.23140.1587–0.506025.7111
20140.76100.6116–0.888116.79911.04060.8586–2.46013.50020.24300.1993–0.275822.50000.01110.0015–0.023112.33330.14830.1038–0.211341.1944
20111.15061.0305–1.282111.96050.20790.1793–0.235816.76610.05680.0493–0.064429.89470.45360.3958–0.511338.7692
Taizhou20170.25830.2282–0.29240.3320>110.0000>709.67740.11900.1042–0.135011.01850.06020.0526–0.068886.00000.55880.4740–0.652562.0889
Wenzhou20179.66798.1328–11.545912.4250>48.0000>309.67740.42530.3488–0.518539.37960.26260.2148–0.3187375.14293.28182.7617–3.8915364.6444
20140.17080.1146–0.24333.77041.06340.0000–2.54923.57690.11440.0549–0.167210.59260.00720.0011–0.01278.00000.02140.0047–0.03495.9444
20110.26160.1434–0.46422.71930.52910.2295–0.990111.55240.15710.0849–0.237712.66940.00980.0070–0.01315.15790.03890.0172–0.06723.3248
Yiwu20170.74360.5956–0.98354.79740.13130.1111–0.153412.15740.01210.0098–0.014517.28570.04200.0376–0.05104.6667
20110.99720.8861–1.112610.36590.12450.1038–0.145410.04030.03740.0323–0.042419.68420.11500.0913–0.13579.8291
Zhoushan20170.29040.2347–0.36470.373258.871937.4590–91.7088379.81870.23950.1657–0.347322.17590.11420.0557–0.2041163.14290.20410.1340–0.307722.6778

Resistant population (RR ≥ 5 and the 95% Confidence interval between the tested strain and the susceptible strain was not overlapped).