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Tahir D, Davoust B, Almeras L, Berenger JM, Varloud M, Parola P. Anti-feeding and insecticidal efficacy of a topical administration of dinotefuran-pyriproxyfen-permethrin spot-on (Vectra® 3D) on mice against Stegomyia albopicta (= Aedes albopictus). Med Vet Entomol 2017; 31:351-357. [PMID: 28714540 DOI: 10.1111/mve.12243] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 03/06/2017] [Accepted: 03/24/2017] [Indexed: 06/07/2023]
Abstract
An ectoparasiticide combining three active ingredients [dinotefuran, permethrin and pyriproxyfen (DPP)] was used in mice in an experiment designed to evaluate its anti-feeding and insecticidal efficacy against Stegomyia albopicta (= Aedes albopictus) (Diptera: Culicidae) mosquitoes. Twenty-two adult mice were randomly allocated into two groups consisting of an untreated control group and a DPP-treated group. Mice were exposed individually for 1 h to a mean ± standard deviation of 27 ± 2 starved female mosquitoes on days 1, 7, 14, 21 and 28 post-treatment. At the end of the exposure (1 h), mosquitoes were assessed for immediate survival and engorgement status. Additionally, live mosquitoes in both groups were incubated separately and observed for mortality at 24 h after the end of the exposure. The anti-feeding efficacy of DPP after the 1-h exposure period was 99.2, 100, 98.0, 89.3 and 87.4% at 1, 7, 14, 21 and 28 days, respectively. Levels of insecticidal efficacy evaluated at 1 h and 24 h after exposure on days 1, 7, 14, 21 and 28 were 36.7, 28.9, 30.8, 23.1 and 11.9%, and 68.4, 45.0, 43.3, 37.9 and 19.9%, respectively. Based on the mouse model, the present study demonstrates that the DPP combination has significant anti-feeding and insecticidal efficacy against S. albopicta for at least 4 weeks.
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Affiliation(s)
- D Tahir
- Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), Aix-Marseille Université, UM63, Centre National de la Recherche Scientifique (CNRS) 7278, Institut de Recherche pour le Développement (IRD) 198 (Dakar), Institut National de la Santé et de la Recherche Médicale (INSERM) 1095, Assistance-Publique Hôpitaux de Marseille (AP-HM) Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
| | - B Davoust
- Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), Aix-Marseille Université, UM63, Centre National de la Recherche Scientifique (CNRS) 7278, Institut de Recherche pour le Développement (IRD) 198 (Dakar), Institut National de la Santé et de la Recherche Médicale (INSERM) 1095, Assistance-Publique Hôpitaux de Marseille (AP-HM) Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
| | - L Almeras
- Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), Aix-Marseille Université, UM63, Centre National de la Recherche Scientifique (CNRS) 7278, Institut de Recherche pour le Développement (IRD) 198 (Dakar), Institut National de la Santé et de la Recherche Médicale (INSERM) 1095, Assistance-Publique Hôpitaux de Marseille (AP-HM) Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
- Unité de Parasitologie et Entomologie, Département des Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
| | - J M Berenger
- Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), Aix-Marseille Université, UM63, Centre National de la Recherche Scientifique (CNRS) 7278, Institut de Recherche pour le Développement (IRD) 198 (Dakar), Institut National de la Santé et de la Recherche Médicale (INSERM) 1095, Assistance-Publique Hôpitaux de Marseille (AP-HM) Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
| | - M Varloud
- Ceva Santé Animale SA, Libourne, France
| | - P Parola
- Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), Aix-Marseille Université, UM63, Centre National de la Recherche Scientifique (CNRS) 7278, Institut de Recherche pour le Développement (IRD) 198 (Dakar), Institut National de la Santé et de la Recherche Médicale (INSERM) 1095, Assistance-Publique Hôpitaux de Marseille (AP-HM) Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
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Brustolin M, Talavera S, Nuñez A, Santamaría C, Rivas R, Pujol N, Valle M, Verdún M, Brun A, Pagès N, Busquets N. Rift Valley fever virus and European mosquitoes: vector competence of Culex pipiens and Stegomyia albopicta (= Aedes albopictus). Med Vet Entomol 2017; 31:365-372. [PMID: 28782121 DOI: 10.1111/mve.12254] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 04/21/2017] [Accepted: 06/08/2017] [Indexed: 06/07/2023]
Abstract
Rift Valley fever (RVF) is a mosquito-borne disease caused by the Rift Valley fever virus (RVFV). Rift Valley fever affects a large number of species, including human, and has severe impact on public health and the economy, especially in African countries. The present study examined the vector competence of three different European mosquito species, Culex pipiens (Linnaeus, 1758) form molestus (Diptera: Culicidae), Culex pipiens hybrid form and Stegomyia albopicta (= Aedes albopictus) (Skuse, 1894) (Diptera: Culicidae). Mosquitoes were artificially fed with blood containing RVFV. Infection, disseminated infection and transmission efficiency were evaluated. This is the first study to assess the transmission efficiency of European mosquito species using a virulent RVFV strain. The virus disseminated in Cx. pipiens hybrid form and in S. albopicta. Moreover, infectious viral particles were isolated from saliva of both species, showing their RVFV transmission capacity. The presence of competent Cx. pipiens and S. albopicta in Spain indicates that an autochthonous outbreak of RVF may occur if the virus is introduced. These findings provide information that will help health authorities to set up efficient entomological surveillance and RVFV vector control programmes.
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Affiliation(s)
- M Brustolin
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - S Talavera
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - A Nuñez
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - C Santamaría
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - R Rivas
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - N Pujol
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - M Valle
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - M Verdún
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - A Brun
- Centro de Investigación en Sanidad Animal, Instituto Nacional de Investigación Agraria y Alimentaria (INIA-CISA), Valdeolmos, Madrid, Spain
| | - N Pagès
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
| | - N Busquets
- IRTA, Centre de Recerca en Sanitat Animal, (CReSA, IRTA-UAB), Bellaterra, Spain
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