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Wan-Norafikah O, Aliah-Diyanah S, Atiqah-Izzah Z, Chen CD, Sofian-Azirun M, Lailatul-Nadhirah A, Ibahim MJ. Assessing the bioefficacy of a commercial temephos formulation (Temebate®) for controlling Aedes albopictus larvae in different land use localities in Malaysia. Exp Parasitol 2023; 254:108627. [PMID: 37802180 DOI: 10.1016/j.exppara.2023.108627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/28/2023] [Accepted: 09/25/2023] [Indexed: 10/08/2023]
Abstract
Temephos is the World Health Organization (WHO) recommended larvicide and is still being utilized worldwide to control larvae of dengue vectors; Aedes aegypti and Aedes albopictus. The efficacy of a commercial temephos product; Temebate® to exterminate the local populations of Ae. albopictus larvae originated from different land use particularly dengue-risk and dengue-free housing localities as well as agrarian localities including oil palm plantations, rubber estates and paddy fields was assessed to verify its bioefficacy in these localities. Field populations of Ae. albopictus larvae were attained via a larval survey at each study locality. Each Ae. albopictus larval population was subjected to a 24-h larval bioassay using Temebate® at operational dosage of 1 mg/L. Almost all Ae. albopictus larval populations demonstrated mortalities between 7.00% and 100.00% by the end of the first 4 h of Temebate® exposure with the resistance ratios between 0.94 and 8.33. After 24 h of Temebate® exposure, all sixteen Ae. albopictus larval populations exhibited increased mortalities with ten of them showing 100% mortalities. These results confirmed the relevance of Temebate® to be continuously used by the residents of these localities as their control efforts against dengue vectors. Nevertheless, Temebate® application by consumers in dengue-risk localities need to be carefully monitored to prevent further development of temephos resistance among Ae. albopictus populations and substantiated with other vector control approaches.
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Affiliation(s)
- Othman Wan-Norafikah
- Faculty of Medicine, Universiti Teknologi MARA (UiTM), Selangor Branch, Sungai Buloh Campus, Jalan Hospital, 47000, Sungai Buloh, Selangor, Malaysia; HW ReNeU, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor, Malaysia; Institute of Medical Molecular Biotechnology (IMMB), Faculty of Medicine, Universiti Teknologi MARA (UiTM), Selangor Branch, Sungai Buloh Campus, Jalan Hospital, 47000, Sungai Buloh, Selangor, Malaysia.
| | - Sharifah Aliah-Diyanah
- Faculty of Medicine, Universiti Teknologi MARA (UiTM), Selangor Branch, Sungai Buloh Campus, Jalan Hospital, 47000, Sungai Buloh, Selangor, Malaysia
| | - Zaifol Atiqah-Izzah
- Faculty of Medicine, Universiti Teknologi MARA (UiTM), Selangor Branch, Sungai Buloh Campus, Jalan Hospital, 47000, Sungai Buloh, Selangor, Malaysia
| | - Chee Dhang Chen
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mohd Sofian-Azirun
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Asri Lailatul-Nadhirah
- Faculty of Medicine, Universiti Teknologi MARA (UiTM), Selangor Branch, Sungai Buloh Campus, Jalan Hospital, 47000, Sungai Buloh, Selangor, Malaysia
| | - Mohammad Johari Ibahim
- Faculty of Medicine, Universiti Teknologi MARA (UiTM), Selangor Branch, Sungai Buloh Campus, Jalan Hospital, 47000, Sungai Buloh, Selangor, Malaysia; HW ReNeU, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor, Malaysia
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Nararak J, Sanguanpong U, Sukkanon C, Manguin S, Chareonviriyaphap T. Synergistic Repellent and Irritant Effects of a Mixture of β-Caryophyllene Oxide and Vetiver Oil against Mosquito Vectors. INSECTS 2023; 14:773. [PMID: 37754741 PMCID: PMC10532066 DOI: 10.3390/insects14090773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/06/2023] [Accepted: 09/15/2023] [Indexed: 09/28/2023]
Abstract
Repellents play a major role in reducing the risk of mosquito-borne diseases by preventing mosquito bites. The present study evaluated the mosquito-repellent activity of β-caryophyllene oxide 1% (BCO), vetiver oil 2.5% (VO), and their binary mixtures (BCO + VO (1:1), BCO + VO (2:1), BCO + VO (1:2)) against four laboratory-colonized mosquito species, Aedes aegypti (L.), Aedes albopictus (Skuse), Anopheles minimus Theobald, and Culex quinquefasciatus Say, using an excito-repellency assay system. In general, the compound mixtures produced a much stronger response in the mosquitoes than single compounds, regardless of the test conditions or species. The greatest synergetic effect was achieved with the combination of BCO + VO (1:2) in both contact and noncontact trials with An. minimus (74.07-78.18%) and Cx. quinquefasciatus (55.36-83.64%). Knockdown responses to the binary mixture of BCO + VO were observed for Ae. albopictus, An. minimus, and Cx. quinquefasciatus, in the range of 18.18-33.33%. The synergistic repellent activity of BCO and VO used in this study may support increased opportunities to develop safer alternatives to synthetic repellents for personal protection against mosquitoes.
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Affiliation(s)
- Jirod Nararak
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand;
| | - Unchalee Sanguanpong
- Association of Thai Innovation and Invention Promotion, Prachatipat 12130, Thailand;
| | - Chutipong Sukkanon
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Salaya, Phuttamonthon, Nakhon Pathom 73170, Thailand;
| | - Sylvie Manguin
- HydroSciences Montpellier (HSM), University Montpellier, CNRS, IRD, 34090 Montpellier, France;
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Morgan J, Salcedo-Sora JE, Triana-Chavez O, Strode C. Expansive and Diverse Phenotypic Landscape of Field Aedes aegypti (Diptera: Culicidae) Larvae with Differential Susceptibility to Temephos: Beyond Metabolic Detoxification. JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:192-212. [PMID: 34718656 PMCID: PMC8755997 DOI: 10.1093/jme/tjab179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Indexed: 05/08/2023]
Abstract
Arboviruses including dengue, Zika, and chikungunya are amongst the most significant public health concerns worldwide. Arbovirus control relies on the use of insecticides to control the vector mosquito Aedes aegypti (Linnaeus), the success of which is threatened by widespread insecticide resistance. The work presented here profiled the gene expression of Ae. aegypti larvae from field populations of Ae. aegypti with differential susceptibility to temephos originating from two Colombian urban locations, Bello and Cúcuta, previously reported to have distinctive disease incidence, socioeconomics, and climate. We demonstrated that an exclusive field-to-lab (Ae. aegypti strain New Orleans) comparison generates an over estimation of differential gene expression (DGE) and that the inclusion of a geographically relevant field control yields a more discrete, and likely, more specific set of genes. The composition of the obtained DGE profiles is varied, with commonly reported resistance associated genes including detoxifying enzymes having only a small representation. We identify cuticle biosynthesis, ion exchange homeostasis, an extensive number of long noncoding RNAs, and chromatin modelling among the differentially expressed genes in field resistant Ae. aegypti larvae. It was also shown that temephos resistant larvae undertake further gene expression responses when temporarily exposed to temephos. The results from the sampling triangulation approach here contribute a discrete DGE profiling with reduced noise that permitted the observation of a greater gene diversity, increasing the number of potential targets for the control of insecticide resistant mosquitoes and widening our knowledge base on the complex phenotypic network of the Ae. aegypti response to insecticides.
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Affiliation(s)
- Jasmine Morgan
- Department of Biology, Edge Hill University, Ormskirk, UK
| | - J Enrique Salcedo-Sora
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Omar Triana-Chavez
- Instituto de Biología, Facultad de Ciencias Exactas y Naturales (FCEN), University of Antioquia, Medellín, Colombia
| | - Clare Strode
- Department of Biology, Edge Hill University, Ormskirk, UK
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Fansiri T, Buddhari D, Pathawong N, Pongsiri A, Klungthong C, Iamsirithaworn S, Jones AR, Fernandez S, Srikiatkhachorn A, Rothman AL, Anderson KB, Thomas SJ, Endy TP, Ponlawat A. Entomological Risk Assessment for Dengue Virus Transmission during 2016-2020 in Kamphaeng Phet, Thailand. Pathogens 2021; 10:pathogens10101234. [PMID: 34684183 PMCID: PMC8538081 DOI: 10.3390/pathogens10101234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 11/16/2022] Open
Abstract
Individual houses with high risks of dengue virus (DENV) transmission might be a source of virus transmission within the neighborhood. We conducted an entomological risk assessment for DENV transmission at the household level, comprising family cohort members residing in the same location, to assess the risk for dengue virus transmitted by mosquito vectors. The studies were conducted in Kamphaeng Phet Province, Thailand, during 2016-2020. Entomological investigations were performed in 35 cohort families on day 1 and day 14 after receiving dengue case reports. DENV was found in 22 Aedes samples (4.9%) out of 451 tested samples. A significantly higher DENV infection rate was detected in vectors collected on day 1 (6.64%) compared to those collected on day 14 (1.82%). Annual vector surveillance was carried out in 732 houses, with 1002 traps catching 3653 Aedes females. The majority of the 13,228 water containers examined were made from plastic and clay, with used tires serving as a primary container, with 59.55% larval abundance. Larval indices, as indicators of dengue epidemics and to evaluate disease and vector control approaches, were calculated. As a result, high values of larval indices indicated the considerably high risk of dengue transmission in these communities.
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Affiliation(s)
- Thanyalak Fansiri
- Department of Entomology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (T.F.); (N.P.); (A.P.)
| | - Darunee Buddhari
- Department of Virology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (D.B.); (C.K.); (A.R.J.); (S.F.)
| | - Nattaphol Pathawong
- Department of Entomology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (T.F.); (N.P.); (A.P.)
| | - Arissara Pongsiri
- Department of Entomology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (T.F.); (N.P.); (A.P.)
| | - Chonticha Klungthong
- Department of Virology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (D.B.); (C.K.); (A.R.J.); (S.F.)
| | - Sopon Iamsirithaworn
- Department of Disease Control, Ministry of Public Health, Nonthaburi 11000, Thailand;
| | - Anthony R. Jones
- Department of Virology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (D.B.); (C.K.); (A.R.J.); (S.F.)
| | - Stefan Fernandez
- Department of Virology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (D.B.); (C.K.); (A.R.J.); (S.F.)
| | - Anon Srikiatkhachorn
- Faculty of Medicine, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;
- Department of Cell and Molecular Biology, Institute for Immunology and Informatics, University of Rhode Island, Providence, RI 02903, USA;
| | - Alan L. Rothman
- Department of Cell and Molecular Biology, Institute for Immunology and Informatics, University of Rhode Island, Providence, RI 02903, USA;
| | - Kathryn B. Anderson
- Department of Medicine, SUNY Upstate Medical University, Syracuse, NY 13210, USA; (K.B.A.); (S.J.T.); (T.P.E.)
| | - Stephen J. Thomas
- Department of Medicine, SUNY Upstate Medical University, Syracuse, NY 13210, USA; (K.B.A.); (S.J.T.); (T.P.E.)
| | - Timothy P. Endy
- Department of Medicine, SUNY Upstate Medical University, Syracuse, NY 13210, USA; (K.B.A.); (S.J.T.); (T.P.E.)
| | - Alongkot Ponlawat
- Department of Entomology, Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok 10400, Thailand; (T.F.); (N.P.); (A.P.)
- Correspondence:
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Li Y, Zhou G, Zhong D, Wang X, Hemming‐Schroeder E, David RE, Lee M, Zhong S, Yi G, Liu Z, Cui G, Yan G. Widespread multiple insecticide resistance in the major dengue vector Aedes albopictus in Hainan Province, China. PEST MANAGEMENT SCIENCE 2021; 77:1945-1953. [PMID: 33301644 PMCID: PMC7986907 DOI: 10.1002/ps.6222] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 11/05/2020] [Accepted: 12/10/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Aedes albopictus is a highly invasive mosquito and has become a potential vector of dengue, chikungunya and Zika viruses. Insecticide-based mosquito interventions are the main tools for vector-borne disease control. However, mosquito resistance to insecticides is a major threat to effective prevention and control. Five Ae. albopictus populations across Hainan Province, China were investigated for susceptibility to multiple insecticide and resistance mechanisms. RESULTS Larval bioassays indicated that resistance to pyrethroids was common in all larval populations. Adult bioassays revealed all populations were either resistant or highly resistant to at least four of the six synthetic insecticides (deltamethrin, permethrin, cyfluthrin, propoxur, malathion, and DDT) tested. Pre-exposure of mosquitoes to the synergistic agent piperonyl butoxide (PBO) increased mosquito mortality by 2.4-43.3% in bioassays to DDT, malathion, and permethrin and rendered mosquito sensitive to deltamethrin, cyfluthrin, and propoxur. The frequency of knockdown resistance (kdr) mutations (F1534S and F1534C) ranged from 69.8% to 89.3% and from 38.1% to 87.0% in field-resistant and sensitive populations, respectively. F1534S mutation was significantly associated with pyrethroid resistance. No mutation was detected in the acetylcholinesterase (ace-1) gene in the two examined populations. CONCLUSION This study provides evidence of widespread resistance to multiple insecticides in Ae. albopictus in Hainan Province, China. Both kdr mutations and metabolic detoxification were potential causes of insecticide resistance for Ae. albopictus. Our findings highlight the need for insecticide resistance management and mosquito control measures that do not entirely depend on synthetic insecticides. © 2020 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Yiji Li
- Department of Pathogen BiologyHainan Medical UniversityHaikouChina
- Program in Public HealthSchool of Medicine, University of CaliforniaIrvineCAUSA
| | - Guofa Zhou
- Program in Public HealthSchool of Medicine, University of CaliforniaIrvineCAUSA
| | - Daibin Zhong
- Program in Public HealthSchool of Medicine, University of CaliforniaIrvineCAUSA
| | - Xiaoming Wang
- Program in Public HealthSchool of Medicine, University of CaliforniaIrvineCAUSA
| | | | - Randy E David
- Program in Public HealthSchool of Medicine, University of CaliforniaIrvineCAUSA
| | - Ming‐Chieh Lee
- Program in Public HealthSchool of Medicine, University of CaliforniaIrvineCAUSA
| | - Saifeng Zhong
- Department of Pathogen BiologyHainan Medical UniversityHaikouChina
| | - Guohui Yi
- Public Research LaboratoryHainan Medical UniversityHaikouChina
| | - Zhuanzhuan Liu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and ImmunologyXuzhou Medical UniversityXuzhouChina
| | - Guzhen Cui
- Key Laboratory for Endemic and Ethnic Diseases, Ministry of EducationSchool of Basic Medical Science, Guizhou Medical UniversityGuiyangChina
| | - Guiyun Yan
- Program in Public HealthSchool of Medicine, University of CaliforniaIrvineCAUSA
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