| Autor: |
Rahim J, Ahmad AH, Kassim NF, Ahmad H, Ishak IH, Rus AC, Maimusa HA |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of the American Mosquito Control Association [J Am Mosq Control Assoc] 2016 Sep; Vol. 32 (3), pp. 210-216. |
| DOI: |
10.2987/16-6556.1 |
| Abstrakt: |
Dengue vector control still heavily relies on the use of chemical insecticides, and the widespread use of insecticides has led to resistance in mosquitoes. The diagnostic dose is a key part of resistance monitoring. The present study corroborates the discriminating lethal doses of temephos and malathion based on dose-response of known susceptible strain of Aedes albopictus following the World Health Organization (WHO) diagnostic test procedure. Late 3rd and early 4th instars were tested with a range of larvicides to determine the lethal concentrations (LC 50 and LC 99 ) values. A slightly higher diagnostic dose of 0.020 mg/liter as compared with the WHO-established value of 0.012 mg/liter was observed for temephos. Meanwhile, a malathion diagnostic dose of 0.200 mg/liter is also reported here since there are no such reported values by WHO. Doubling the LC 99 values of susceptible strains, 3 of the 5 wild-collected populations showed resistance to temephos and 2 showed incipient resistance; all 5 populations showed incipient resistance to malathion. The revised and established lethal diagnostic dose findings from the current work are crucial to elaborate on the variation in susceptibility of Ae. albopictus in future resistance monitoring programs in Malaysia. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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