Susceptibility and fitness cost of Aedes albopictus on their survivability after the exposure to the insecticide |
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| Institution: | 1. Medical Entomology Laboratory, School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia;2. Vector Control Research Unit, School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia;3. Institute of Biodiversity and Environmental Conservation (IBEC), Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia;1. Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing/Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, China;2. School of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China;3. School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China;1. School of Biology and Basic Medical Science, Soochow University, Suzhou, 215123, China;2. School of Studies in Zoology, Jiwaji University, Gwalior, 474011, India;3. National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, China;4. Agricultural Biotechnology Research Institute, Agricultural Biotechnology and Ecological Research Institute, Soochow University, Suzhou 215123, China;1. Department of Zoology, Government Arts College, Melur, 625106 Madurai, Tamil Nadu, India;2. Centre for Research in Aquatic Entomology, The Madura College, Madurai 625011, Tamil Nadu, India;3. Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Rajasthan 305801, India;1. Insect Biosystematics Laboratory, Seoul National University, Seoul 151-921, Republic of Korea;2. Animal Phylogeny and Systematics Lab., Department of Biology, Kunsan National University, Gunsan 573-701, Republic of Korea;3. Department of Plant Medicine and Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, Republic of Korea;4. Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea;5. Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 151-921, Republic of Korea;1. Laboratory of Insect Biosystematics, Department of Agricultural Biotechnology, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea;2. Department of Plant Medicine and Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea |
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| Abstract: | The present study was undertaken to investigate the lethal and sub-lethal effects of insecticides on the life history of Aedes albopictus mosquitoes from urban and sub-urban areas in Penang, Malaysia. The female mosquitoes aged two to five days old were exposed to; (1) diagnostic dose (lethal dose) at 5% malathion and 0.75% permethrin; and (2) sub-lethal concentration of 1.5% malathion, and 0.2% permethrin, respectively and adult female survivors from sub-lethal concentrations were evaluated for fitness parameters. Fecundity, fertility, adult longevity, development time and survival of mosquitoes were the crucial point in their life history had studied. Aedes albopictus species from urban Sg. Dua strain has developed high resistance towards 0.75% permethrin and was confirmed on resistance after 24 h of reading. While sub-urban Batu Maung strain is still susceptible to both 5% malathion and 0.75% permethrin. At the sub-lethal dose, we discovered 0.2% permethrin insecticide have significantly more effects on the fitness cost of Ae. albopictus as compared to 1.5% malathion; with decreasing on fecundity, lesser time was needed to reach each development stages, and more male adult was emerged compared to female mosquitoes for both urban and sub-urban strains. Whereas, malathion insecticide only affected the number of eggs laid by the parent mosquitoes and the development time to reach adult stages. Even though, Ae. albopictus mosquitoes had developed resistance towards permethrin resulted in decreasing mortality, but subsequent effects on their fitness cost still continued on the first generation. Thus, it will benefit in reducing the transmission of mosquito-borne diseases. |
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