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1 March 2015 Evaluation of Insect Growth Regulators Against Field-Collected Aedes aegypti and Aedes albopictus (Diptera: Culicidae) from Malaysia
Koon Weng Lau, Chee Dhang Chen, Han Lim Lee, Yusoff Norma-Rashid, Mohd Sofian-Azirun
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Abstract

Susceptibility status of Aedes aegypti (L.) and Aedes albopictus Skuse larvae obtained from 12 states in Malaysia were evaluated against five insect growth regulators (IGRs), namely, pyriproxyfen, methoprene, diflubenzuron, cyromazine, and novaluron under laboratory conditions. Field populations of Ae. aegypti exhibited moderate resistance toward methoprene and low resistance toward pyriproxyfen, with resistance ratios of 12.7 and 1.4, respectively, but susceptibility to diflubenzuron, cyromazine, and novaluron. On the other hand, field populations of Ae. albopictus exhibited low resistance against diflubenzuron and novaluron, with resistance ratio of 2.1 and 1.0, respectively, but susceptibility to other tested IGRs. Our study concluded that the tested IGRs provide promising results and can be used to control field population of Ae. aegypti and Ae. albopictus, especially cyromazine. The use of IGR should be considered as an alternative when larvae develop resistance to conventional insecticides.

© The Author 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com
Koon Weng Lau, Chee Dhang Chen, Han Lim Lee, Yusoff Norma-Rashid, and Mohd Sofian-Azirun "Evaluation of Insect Growth Regulators Against Field-Collected Aedes aegypti and Aedes albopictus (Diptera: Culicidae) from Malaysia," Journal of Medical Entomology 52(2), 199-206, (1 March 2015). https://doi.org/10.1093/jme/tju019
Received: 2 June 2014; Accepted: 13 November 2014; Published: 1 March 2015
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KEYWORDS
Aedes aegypti
Aedes albopictus
insect growth regulator
Malaysia
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