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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)]

From: Multiple insecticide resistance mechanisms involving metabolic changes and insensitive target sites selected in anopheline vectors of malaria in Sri Lanka

  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