Assessment of the susceptibility status of Aedes albopictus (Diptera: Culicidae) from Interior, Sandakan and Tawau divisions of Sabah, Malaysia based on WHO diagnostic doses of larvicides

Elia-Amira, N. M. R. and Chen, Chee Dhang and Low, V. L. and Lau, K. W. and Haziqah-Rashid, A. and Amelia-Yap, Z. H. and Lee, H. L. and Azidah, Abdul Aziz. and Sofian-Azirun, Mohd. (2021) Assessment of the susceptibility status of Aedes albopictus (Diptera: Culicidae) from Interior, Sandakan and Tawau divisions of Sabah, Malaysia based on WHO diagnostic doses of larvicides. Tropical Biomedicine, 38 (2). pp. 196-204. ISSN 0127-5720, DOI https://doi.org/10.47665/tb.38.2.058.

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Abstract

Susceptibility status of Aedes albopictus (Skuse) sampled from residential areas in Interior, Sandakan and Tawau divisions of Sabah, Malaysia, was evaluated based on the WHO-recommended doses of organochlorine and organophosphate larvicides. To determine susceptibility status, larval bioassays were carried out and post 24-hour mortalities based on WHO resistance classifications were adopted. The results demonstrated that Ae. albopictus larvae were resistant toward 5 out of the 8 larvicides tested. Larvae from all populations were resistant against bromophos, fenitrothion, malathion, temephos and dichlorodiphenyltrichloroethane (DDT), with mortalities ranging from 0.00 to 89.33%. Dieldrin, on the other hand, could induce 100.00% mortalities in all populations, followed by fenthion and chlorpyrifos, with mortalities ranging from 97.33 to 100.00% and 81.33 to 100.00% respectively. Despite most populations exhibiting similitude in their resistance status, larvae from Sandakan exhibited the highest resistance level whereas the lowest level was observed in Keningau. In view of the inadequacy of some larvicides in controlling Ae. albopictus in this study, integrated management such as insecticide rotation or combination of interventions is warranted.

Item Type: Article
Funders: Universiti Malaya Research Grant (UMRG)[RP021B/16SUS], Higher Institution Center of Excellence (HICoE) Program Research Grant[MO002-2019]
Uncontrolled Keywords: Aedes albopictus;Organochlorine;Organophosphate;Sabah; Malaysia
Subjects: Q Science > QK Botany
R Medicine
R Medicine > RV Botanic, Thomsonian, and eclectic medicine
S Agriculture > SB Plant culture
Divisions: Faculty of Science
Depositing User: Ms Zaharah Ramly
Date Deposited: 20 Jun 2022 03:50
Last Modified: 20 Jun 2022 03:50
URI: http://eprints.um.edu.my/id/eprint/34178

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