Abu Bakar, Siti Najiha (2020) Field efficacy of Intelligent Mosquito System (I.M.O.S) with Xmos mini aerosol against Aedes in 17th College, Universiti Putra Malaysia. [Project Paper] (Submitted)
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Abstract
Dengue fever is an endemic disease that critically affects subtropical and tropical regions of the world. Female Aedes mosquitoes are the only known vector that can transmit dengue virus (DENV) and cause dengue fever (DF). Recent DF cases have been reported in Malaysia with highest cumulative cases in Selangor state. Despite the ongoing efforts from the Ministry of Health in controlling and preventing the transmission of dengue virus, the cases continue to rise due to uncontrolled factors. Xmos mini aerosol is an intervention that is able to kill adult mosquitoes. It contains 0.76% (w/w) metofluthrin as the main ingredient along with nano tech slow release technology. Objective: This study determined the efficacy of I.M.O.S (Intelligent Mosquito House) by using Xmos mini aerosol in reducing Aedes mosquito population in 17th College, Universiti Putra Malaysia (UPM). Methodology: Prior to the experiment, the Aedes mosquito population was determined in all blocks of the 17th College, UPM. Ovitraps were set up in each floor of the block for seven days to collect the mosquitoes. The eggs were counted and houses with high mosquito population were identified to test the I.M.O.S intervention. Another block with similar mosquito population was chosen as control. I.M.O.S. was installed above the entrance door of the hall and two rooms and was set to automatically spray at 6.30 am and 4.00 pm every day. No intervention was used in the control house. The efficacy test was conducted for three months. On day 30,60 and 90, Aedes mosquitoes (obtained from Sumitomo Chemical) were placed in cages with 20 mosquitoes in each cage and was hung at a distance of 10 m from I.M.O.S. The mosquitoes were exposed for two hours and the mortality caused by I.M.O.S were recorded throughout the 24 hours exposure. Following three months of I.M.O.S installation, the units were removed. The number of mosquito eggs population was calculated. Percentage of adult knockdown and percentage of adult mortality were determined by using two-way ANOVA and unpaired T-test, respectively. Result: The mean number of Aedes mosquito eggs and ovitrap showed no significant difference (p>0.05) between control and treatment blocks. On the other hand, we found significant differences (p<0.05) in the percentage of knockdown of adult Aedes mosquitoes (10, 20, 30, 60 and 120 minutes after exposure) and the mortality of adult Aedes mosquitoes after 24 hours exposure. Conclusion: Nano and slow release technology of I.M.O.S proved that this type of intervention can kills adult Aedes mosquitoes. Thus, it is a potential intervention for vector control and management.
| Item Type: | Project Paper |
|---|---|
| Faculty: | Faculty of Medicine and Health Science |
| Depositing User: | Ms. Nor Safa'aton Saidin |
| Date Deposited: | 23 Aug 2023 00:05 |
| Last Modified: | 23 Aug 2023 00:05 |
| URI: | http://psaspb.upm.edu.my/id/eprint/1337 |
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