Evaluation of insecticide resistance among Malaysian Aedes albopictus Skuse larvae based on revised diagnostic doses of larvicides
https://doi.org/10.47665/tb.40.3.008
- Author:
Wan-Norafikah, O.
1
,
2
,
3
;
Chen, C.D.
3
;
Sofian-Azirun, M.
3
Author Information
1. Faculty of Medicine, Universiti Teknologi MARA (UiTM), Selangor Branch, Sungai Buloh Campus, Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia&
2. HW ReNeU, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia&
3. Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Publication Type:Journal Article
- Keywords:
Aedes albopictus;
diagnostic doses;
larvicides;
larval bioassay;
Malaysia.
- From:Tropical Biomedicine
2023;40(No.3):320-330
- CountryMalaysia
- Language:English
-
Abstract:
The susceptibility levels of Malaysian Aedes albopictus larvae sampled from several agricultural,
fogging-free residential and dengue prone residential areas against different larvicides were evaluated
using revised diagnostic doses derived from the 2xLC99 values of the reference strain. Upon 24-hour
recovery period of WHO larval bioassay, incipient resistance was observed among Ae. albopictus
larvae from rubber estates against fenitrothion (96.67% mortality) and permethin (97.00% mortality)
while Ae. albopictus larvae from rice cultivation areas were moderately resistant to fenthion (94.33%
mortality). Aedes albopictus larvae from dengue prone residential areas developed moderate to
high resistance against dichlorodiphenyltrichloroethane (DDT), fenitrothion, fenthion, propoxur and
permethrin (79.67% – 97.33% mortality). Moderate to high resistance were also demonstrated among
all populations of Ae. albopictus larvae against temephos and chlorpyrifos (63.00% – 97.67% mortality).
Except for Ae. albopictus larvae from oil palm plantations, all Ae. albopictus larval populations were also
highly resistant to bendiocarb (65.67% – 89.67% mortality). Cross resistance between larvicides from
similar and different insecticide classes were also revealed in this study. The use of revised diagnostic
doses established from the local reference strain could reduce the possibility of underestimation or
overestimation of the insecticide susceptibility status of field strain populations.
- Full text:8.2023my14241.pdf
