Table 1.
Mortality rate and resistance status in a batch of An. sinensis in 10 replicates exposed to four insecticides
| Year | DDT | Deltamethrin | Cyfluthrin | Malathion | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | Mortality% | Resistance status | N | Mortality% | Resistance status | N | Mortality% | Resistance status | N | Mortality% | Resistance status | |
| 2003 | 101 | 58.93 | R | 96 | 81.37 | M | 102 | 80.60 | M | 108 | 47.37 | R |
| 2004 | 108 | 45.48 | R | 103 | 84.17 | M | 106 | 73.04 | R | 117 | 48.34 | R |
| 2005 | 99 | 33.37 | R | 104 | 73.58 | R | 112 | 63.29 | R | 105 | 56.52 | R |
| 2006 | 125 | 31.43 | R | 120 | 58.33 | R | 107 | 60.54 | R | 102 | 60.78 | R |
| 2007 | 117 | 38.54 | R | 115 | 58.50 | R | 114 | 47.55 | R | 107 | 69.16 | R |
| 2008 | 113 | 47.67 | R | 108 | 56.48 | R | 103 | 40.90 | R | 114 | 75.21 | R |
| 2009 | 107 | 47.31 | R | 104 | 50.22 | R | 118 | 33.05 | R | 120 | 77.11 | R |
| 2010 | 116 | 40.11 | R | 107 | 47.74 | R | 106 | 38.68 | R | 116 | 75.00 | R |
| 2011 | 115 | 30.43 | R | 113 | 44.25 | R | 100 | 30.77 | R | 103 | 81.60 | M |
| 2012 | 121 | 30.40 | R | 101 | 35.80 | R | 109 | 32.40 | R | 108 | 86.62 | M |
| Mean | 40.37 | 59.04 | 50.08 | 67.77 | ||||||||
N: Total number of mosquitoes tested.