Table 4

Presence of insensitive target site acetylcholinesterase (AChE) in Anopheles culicifacies and Anopheles subpictus populations [homozygous sensitive (SS), heterozygous (RS) and homozygous insensitive (RR) are given according to percentage remaining activity of AChE after insecticide inhibition (WHO, 1998)]


An. culicifacies
% population
An. subpictus
% population


SS
(< 30%)
RS
(30–70%)
RR
(> 70%)
SS
(< 30%)
RS
(30–70%)
RR
(> 70%)

Anuradhapura
31
42
27
31
53
16
Kurunegala
70
25
5
22
52
26
Moneragala
27
49
25
22
52
26
Puttalam
54
17
29
40
32
28
Trincomalee
60
13
27
17
13
70

Perera et al. Malaria Journal 2008 7:168   doi:10.1186/1475-2875-7-168

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