District | Species | aAChE (%) | bGST | cEst | dMO | eMCE |
---|
 |  |
< 30 [SS]
|
30-70 [RS]
|
> 70 [RR]
| Â | Â | Â | Â |
Trincomalee | B/An. sundaicus s.l. | 56 | 38 | 6 | 55 | 33 | 0 | + |
 | C | 25 | 40 | 35 | 49 | 42 | 0 | ++ |
 | D | 47 | 43 | 10 | 54 | 32 | 0 | ++ |
Batticaloa | B/An. sundaicus s.l. | 53 | 44 | 3 | 27 | 36 | 0 | + |
 | C | 39 | 29 | 32 | 32 | 51 | 0 | ++ |
 | D | 40 | 34 | 26 | 23 | 42 | 0 | ++ |
Ampara | B/An. sundaicus s.l. | 70 | 24 | 6 | 18 | 16 | 0 | _ |
 | C | 47 | 25 | 28 | 53 | 58 | 0 | ++ |
 | D | 56 | 23 | 21 | 50 | 42 | 0 | ++ |
Puttalam | B/An. sundaicus s.l. | 63 | 31 | 6 | 29 | 22 | 0 | + |
 | C | 44 | 36 | 20 | 40 | 58 | 0 | ++ |
 | D | 41 | 28 | 31 | 48 | 54 | 0 | ++ |
- aHomozygous sensitive (SS), heterozygous (RS) and homozygous insensitive (RR) are given according to the percentage remaining activity of AChEs in individual mosquitoes after insecticide inhibition [27].
- b % population having glutathione S-transferase (GST) specific activity above 0.40 μmol/mg/min [19].
- c % population having esterase (Est) specific activity above 0.25 μmol/mg/min [19].
- d % population having monooxygenase (MO) levels above 0.35 per mg protein of cytochrome P450[19]
- e malathion carboxyesterase (MCE) activity as measured by malathion metabolism studies:- no activity, +- moderate activity (production of only either mono-acid or di-acid), ++-high activity (production of both mono-acid and di-acid).