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Aldridge RL, Gibson S, Linthicum KJ. Aedes aegypti Controls AE. Aegypti: SIT and IIT-An Overview. JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION 2024; 40:32-49. [PMID: 38427588 DOI: 10.2987/23-7154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
The sterile insect technique (SIT) and the incompatible insect technique (IIT) are emerging and potentially revolutionary tools for controlling Aedes aegypti (L.), a prominent worldwide mosquito vector threat to humans that is notoriously difficult to reduce or eliminate in intervention areas using traditional integrated vector management (IVM) approaches. Here we provide an overview of the discovery, development, and application of SIT and IIT to Ae. aegypti control, and innovations and advances in technology, including transgenics, that could elevate these techniques to a worldwide sustainable solution to Ae. aegypti when combined with other IVM practices.
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Ogunlade ST, Meehan MT, Adekunle AI, McBryde ES. A Systematic Review of Mathematical Models of Dengue Transmission and Vector Control: 2010-2020. Viruses 2023; 15:254. [PMID: 36680294 PMCID: PMC9862433 DOI: 10.3390/v15010254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
Vector control methods are considered effective in averting dengue transmission. However, several factors may modify their impact. Of these controls, chemical methods, in the long run, may increase mosquitoes' resistance to chemicides, thereby decreasing control efficacy. The biological methods, which may be self-sustaining and very effective, could be hampered by seasonality or heatwaves (resulting in, e.g., loss of Wolbachia infection). The environmental methods that could be more effective than the chemical methods are under-investigated. In this study, a systematic review is conducted to explore the present understanding of the effectiveness of vector control approaches via dengue transmission models.
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Affiliation(s)
- Samson T. Ogunlade
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville 4811, Australia
- College of Medicine and Dentistry, James Cook University, Townsville 4811, Australia
| | - Michael T. Meehan
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville 4811, Australia
| | - Adeshina I. Adekunle
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville 4811, Australia
- Defence Science and Technology Group, Department of Defence, Melbourne 3207, Australia
| | - Emma S. McBryde
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville 4811, Australia
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Li X, Wu Q, Wu J, Zeng L, Cheng D, Xian J, Lu Y. Effects of four chemosterilants on Bactrocera tau. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 243:114028. [PMID: 36037635 DOI: 10.1016/j.ecoenv.2022.114028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 08/08/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Bactrocera tau (Walker) is a fly pest species mainly distributed in Southeast Asia and the South Pacific; it causes substantial ecological and economic issues because of its destructiveness and rapid reproduction. Chemical sterilization technology can reduce the use of insecticides and is widely applied for insect pest control. In this study, the sterilization efficacy of varying concentrations of four chemosterilants, namely, hexamethylphosphoramide (HMPA), CSII Aqua, 5-fluorouracil (5-FU), and colchicine, on adult pumpkin flies was investigated. The results indicated that a solution of 0.03% HMPA had the highest sterilization efficacy. When the number of sterile males was equal to or exceeded 20 times that of untreated males, the hatching rate of offspring eggs was less than 10%. Chemosterilant treatment significantly altered the levels of acid phosphatase (ACP), alkaline phosphatase (AKP), and B. tau vitellogenin (BtVg); these substances have an important impact on reproductive development. The treatment also decreased the size of the reproductive organs (i.e., testes and ovaries). Our results suggest that 0.03% HMPA has unique sterilization properties and may represent a new chemical agent for the control of B. tau populations in agricultural settings.
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Affiliation(s)
- XinLian Li
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
| | - QiSong Wu
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
| | - Jiao Wu
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
| | - Ling Zeng
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
| | - DaiFeng Cheng
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
| | - JiDong Xian
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
| | - YongYue Lu
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
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Diouf EG, Brévault T, Ndiaye S, Faye E, Chailleux A, Diatta P, Piou C. An agent-based model to simulate the boosted Sterile Insect Technique for fruit fly management. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.109951] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Vreysen MJB, Abd-Alla AMM, Bourtzis K, Bouyer J, Caceres C, de Beer C, Oliveira Carvalho D, Maiga H, Mamai W, Nikolouli K, Yamada H, Pereira R. The Insect Pest Control Laboratory of the Joint FAO/IAEA Programme: Ten Years (2010-2020) of Research and Development, Achievements and Challenges in Support of the Sterile Insect Technique. INSECTS 2021; 12:346. [PMID: 33924539 PMCID: PMC8070182 DOI: 10.3390/insects12040346] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/30/2021] [Accepted: 04/01/2021] [Indexed: 02/06/2023]
Abstract
The Joint FAO/IAEA Centre (formerly called Division) of Nuclear Techniques in Food and Agriculture was established in 1964 and its accompanying laboratories in 1961. One of its subprograms deals with insect pest control, and has the mandate to develop and implement the sterile insect technique (SIT) for selected key insect pests, with the goal of reducing the use of insecticides, reducing animal and crop losses, protecting the environment, facilitating international trade in agricultural commodities and improving human health. Since its inception, the Insect Pest Control Laboratory (IPCL) (formerly named Entomology Unit) has been implementing research in relation to the development of the SIT package for insect pests of crops, livestock and human health. This paper provides a review of research carried out between 2010 and 2020 at the IPCL. Research on plant pests has focused on the development of genetic sexing strains, characterizing and assessing the performance of these strains (e.g., Ceratitis capitata), elucidation of the taxonomic status of several members of the Bactrocera dorsalis and Anastrepha fraterculus complexes, the use of microbiota as probiotics, genomics, supplements to improve the performance of the reared insects, and the development of the SIT package for fruit fly species such as Bactrocera oleae and Drosophila suzukii. Research on livestock pests has focused on colony maintenance and establishment, tsetse symbionts and pathogens, sex separation, morphology, sterile male quality, radiation biology, mating behavior and transportation and release systems. Research with human disease vectors has focused on the development of genetic sexing strains (Anopheles arabiensis, Aedes aegypti and Aedes albopictus), the development of a more cost-effective larvae and adult rearing system, assessing various aspects of radiation biology, characterizing symbionts and pathogens, studying mating behavior and the development of quality control procedures, and handling and release methods. During the review period, 13 coordinated research projects (CRPs) were completed and six are still being implemented. At the end of each CRP, the results were published in a special issue of a peer-reviewed journal. The review concludes with an overview of future challenges, such as the need to adhere to a phased conditional approach for the implementation of operational SIT programs, the need to make the SIT more cost effective, to respond with demand driven research to solve the problems faced by the operational SIT programs and the use of the SIT to address a multitude of exotic species that are being introduced, due to globalization, and established in areas where they could not survive before, due to climate change.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Hanano Yamada
- Insect Pest Control Subprogramme, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, A-1400 Vienna, Austria; (M.J.B.V.); (A.M.M.A.-A.); (K.B.); (J.B.); (C.C.); (C.d.B.); (D.O.C.); (H.M.); (W.M.); (K.N.); (R.P.)
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Pérez-Staples D, Díaz-Fleischer F, Montoya P. The Sterile Insect Technique: Success and Perspectives in the Neotropics. NEOTROPICAL ENTOMOLOGY 2021; 50:172-185. [PMID: 33113111 DOI: 10.1007/s13744-020-00817-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
The sterile insect technique (SIT), an environmentally friendly means of control, is currently used against plant, animal, and human pests under the area-wide integrated pest management. It consists in the mass production, sterilization, and release of insects in an affected area where sterile males mate with wild females leading to no reproduction. Here, we review SIT in the Neotropics and focus on particular recent successful cases of eradication of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), as well as effective programs used against the Mexican fruit fly Anastrepha ludens (Loew), the New World screwworm fly Cochliomyia hominivorax (Coquerel)), and the Cactus moth Cactoblastis cactorum (Berg). We examine when SIT does not work and innovations that have made SIT more efficient and also highlight complimentary techniques that can be used in conjunction. We address potential candidate species that could be controlled through SIT, for example Philornis downsi Dodge & Aitken. Finally, we consider the impact of climate change in the context of the use of the SIT against these pests. Given the recent dramatic decline in insect biodiversity, investing in environmentally friendly means of pest control should be a priority. We conclude that SIT should be promoted in the region, and leadership and political will is needed for continued success of SIT in the Neotropics.
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Affiliation(s)
| | | | - P Montoya
- Programa Moscafrut SENASICA-SADER, Metapa de Domínguez, Chiapas, Mexico
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Douchet L, Haramboure M, Baldet T, L'Ambert G, Damiens D, Gouagna LC, Bouyer J, Labbé P, Tran A. Comparing sterile male releases and other methods for integrated control of the tiger mosquito in temperate and tropical climates. Sci Rep 2021; 11:7354. [PMID: 33795801 PMCID: PMC8016901 DOI: 10.1038/s41598-021-86798-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 03/19/2021] [Indexed: 11/09/2022] Open
Abstract
The expansion of mosquito species worldwide is creating a powerful network for the spread of arboviruses. In addition to the destruction of breeding sites (prevention) and mass trapping, methods based on the sterile insect technique (SIT), the autodissemination of pyriproxyfen (ADT), and a fusion of elements from both of these known as boosted SIT (BSIT), are being developed to meet the urgent need for effective vector control. However, the comparative potential of these methods has yet to be explored in different environments. This is needed to propose and integrate informed guidelines into sustainable mosquito management plans. We extended a weather-dependent model of Aedes albopictus population dynamics to assess the effectiveness of these different vector control methods, alone or in combination, in a tropical (Reunion island, southwest Indian Ocean) and a temperate (Montpellier area, southern France) climate. Our results confirm the potential efficiency of SIT in temperate climates when performed early in the year (mid-March for northern hemisphere). In such a climate, the timing of the vector control action was the key factor in its success. In tropical climates, the potential of the combination of methods becomes more relevant. BSIT and the combination of ADT with SIT were twice as effective compared to the use of SIT alone.
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Affiliation(s)
- Léa Douchet
- CIRAD, UMR ASTRE, 97491, Sainte-Clotilde, Reunion, France
- ASTRE, CIRAD, INRAE, Univ Montpellier, Montpellier, France
| | - Marion Haramboure
- CIRAD, UMR ASTRE, 97491, Sainte-Clotilde, Reunion, France.
- ASTRE, CIRAD, INRAE, Univ Montpellier, Montpellier, France.
- ISEM, CNRS, IRD, EPHE, Université de Montpellier, Montpellier, France.
- TETIS, AgroParisTech, CIRAD, CNRS, INRAE, Univ Montpellier, Montpellier, France.
| | - Thierry Baldet
- CIRAD, UMR ASTRE, 97491, Sainte-Clotilde, Reunion, France
- ASTRE, CIRAD, INRAE, Univ Montpellier, Montpellier, France
| | - Gregory L'Ambert
- Department of Research and Development, EID Méditerranée, Montpellier, France
| | - David Damiens
- IRD, CNRS-UM-IRD, UMR MIVEGEC, Montpellier, Reunion, France
- IRD/GIP CYROI, Sainte-Clotilde, Reunion, France
| | - Louis Clément Gouagna
- IRD, CNRS-UM-IRD, UMR MIVEGEC, Montpellier, Reunion, France
- IRD/GIP CYROI, Sainte-Clotilde, Reunion, France
| | - Jeremy Bouyer
- ASTRE, CIRAD, INRAE, Univ Montpellier, Montpellier, France
- CIRAD, UMR ASTRE, 34398, Montpellier, France
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria
- CIRAD, UMR ASTRE, 97410, Saint-Pierre, Reunion, France
| | - Pierrick Labbé
- ISEM, CNRS, IRD, EPHE, Université de Montpellier, Montpellier, France
| | - Annelise Tran
- CIRAD, UMR ASTRE, 97491, Sainte-Clotilde, Reunion, France
- ASTRE, CIRAD, INRAE, Univ Montpellier, Montpellier, France
- TETIS, AgroParisTech, CIRAD, CNRS, INRAE, Univ Montpellier, Montpellier, France
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Oliva CF, Benedict MQ, Collins CM, Baldet T, Bellini R, Bossin H, Bouyer J, Corbel V, Facchinelli L, Fouque F, Geier M, Michaelakis A, Roiz D, Simard F, Tur C, Gouagna LC. Sterile Insect Technique (SIT) against Aedes Species Mosquitoes: A Roadmap and Good Practice Framework for Designing, Implementing and Evaluating Pilot Field Trials. INSECTS 2021; 12:191. [PMID: 33668374 PMCID: PMC7996155 DOI: 10.3390/insects12030191] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/16/2021] [Accepted: 02/20/2021] [Indexed: 12/20/2022]
Abstract
Aedes albopictus and Aedes aegypti are invasive mosquito species that impose a substantial risk to human health. To control the abundance and spread of these arboviral pathogen vectors, the sterile insect technique (SIT) is emerging as a powerful complement to most commonly-used approaches, in part, because this technique is ecologically benign, specific, and non-persistent in the environment if releases are stopped. Because SIT and other similar vector control strategies are becoming of increasing interest to many countries, we offer here a pragmatic and accessible 'roadmap' for the pre-pilot and pilot phases to guide any interested party. This will support stakeholders, non-specialist scientists, implementers, and decision-makers. Applying these concepts will ensure, given adequate resources, a sound basis for local field trialing and for developing experience with the technique in readiness for potential operational deployment. This synthesis is based on the available literature, in addition to the experience and current knowledge of the expert contributing authors in this field. We describe a typical path to successful pilot testing, with the four concurrent development streams of Laboratory, Field, Stakeholder Relations, and the Business and Compliance Case. We provide a graphic framework with criteria that must be met in order to proceed.
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Affiliation(s)
- Clélia F. Oliva
- Centre Technique Interprofessionnel des Fruits et Légumes (CTIFL), Centre Opérationnel de Balandran, 751 Chemin de Balandran, 30127 Bellegarde, France;
- Collectif TIS (Technique de l’Insecte Stérile), 751 Chemin de Balandran, 30127 Bellegarde, France
| | | | - C Matilda Collins
- Centre for Environmental Policy, Imperial College London, London SW7 1NE, UK;
| | - Thierry Baldet
- ASTRE (Animal, Santé, Territoires, Risques, Ecosystèmes), Cirad, Univ Montpellier, 34398 Montpellier, France; (T.B.); (J.B.)
| | - Romeo Bellini
- Centro Agricoltura Ambiente “Giorgio Nicoli”, S.r.l. Via Sant’Agata, 835, 40014 Crevalcore, Italy;
| | - Hervé Bossin
- Institut Louis Malardé, Papeete, 98713 Tahiti, French Polynesia;
| | - Jérémy Bouyer
- ASTRE (Animal, Santé, Territoires, Risques, Ecosystèmes), Cirad, Univ Montpellier, 34398 Montpellier, France; (T.B.); (J.B.)
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, IAEA Vienna, Wagramer Strasse 5, 1400 Vienna, Austria
| | - Vincent Corbel
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
| | - Luca Facchinelli
- Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK;
| | - Florence Fouque
- TDR (Special Programme for Research and Training in Tropical Diseases), WHO, 20 Avenue Appia, 1121 Geneva, Switzerland;
| | - Martin Geier
- Biogents AG, Weissenburgstr. 22, 93055 Regensburg, Germany;
| | - Antonios Michaelakis
- Benaki Phytopathological Institute. 8, S. Delta str., Kifissia, 14561 Athens, Greece;
| | - David Roiz
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
| | - Frédéric Simard
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
| | - Carlos Tur
- Grupo Tragsa–KM. 4,5 Bajo, A28476208-EMPRE, Moncada, 46113 Valencia, Spain;
| | - Louis-Clément Gouagna
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Écologie, Génétique, Évolution et Contrôle), IRD-CNRS-Univ. Montpellier, 34394 Montpellier, France; (V.C.); (D.R.); (F.S.)
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Mamai W, Maiga H, Bimbilé Somda NS, Wallner T, Masso OB, Resch C, Yamada H, Bouyer J. Does Tap Water Quality Compromise the Production of Aedes Mosquitoes in Genetic Control Projects? INSECTS 2021; 12:insects12010057. [PMID: 33445407 PMCID: PMC7826741 DOI: 10.3390/insects12010057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/01/2021] [Accepted: 01/07/2021] [Indexed: 12/26/2022]
Abstract
Simple Summary Scientists all over the world are continually rearing and producing insects in laboratories for many purposes including pest control programmes. Aedes aegypti and Ae. albopictus are mosquitoes of public health importance due to their ability to vector human and animal pathogens and thus vector control represents an important component of many disease control programmes. Water is a factor of great importance in the larval environment of mosquito species. However, obtaining sufficient water of reliable quality for mosquito rearing is still challenging, especially in developing and least developed countries, where access even to clean drinking water is limited. In prospect of cost-effective methods for improved mass-rearing toward SIT application, we assessed the impact of using tap water on the development and quality of Aedes mosquitoes. Results showed that, tap water with hardness/electrical conductivity beyond certain levels (140 mg/l CaCO3 or 368 µS/cm) was shown to have a negative impact on the production of Ae. albopictus and Ae. aegypti mosquitoes. These results suggest that the quality of water should be checked when using for rearing mosquitoes for release purposes in order to optimize the production performance of mass-rearing facilities. This may have important implications for the implementation of the sterile insect technique in areas where reverse osmosis water is a scarce or costly resource. Abstract A mosquito’s life cycle includes an aquatic phase. Water quality is therefore an important determinant of whether or not the female mosquitoes will lay their eggs and the resulting immature stages will survive and successfully complete their development to the adult stage. In response to variations in laboratory rearing outputs, there is a need to investigate the effect of tap water (TW) (in relation to water hardness and electrical conductivity) on mosquito development, productivity and resulting adult quality. In this study, we compared the respective responses of Aedes aegypti and Ae. albopictus to different water hardness/electrical conductivity. First-instar larvae were reared in either 100% water purified through reverse osmosis (ROW) (low water hardness/electrical conductivity), 100% TW (high water hardness/electrical conductivity) or a 80:20, 50:50, 20:80 mix of ROW and TW. The immature development time, pupation rate, adult emergence, body size, and longevity were determined. Overall, TW (with higher hardness and electrical conductivity) was associated with increased time to pupation, decreased pupal production, female body size in both species and longevity in Ae. albopictus only. However, Ae. albopictus was more sensitive to high water hardness/EC than Ae. aegypti. Moreover, in all water hardness/electrical conductivity levels tested, Ae. aegypti developed faster than Ae. albopictus. Conversely, Ae. albopictus adults survived longer than Ae. aegypti. These results imply that water with hardness of more than 140 mg/l CaCO3 or electrical conductivity more than 368 µS/cm cannot be recommended for the optimal rearing of Aedes mosquitoes and highlight the need to consider the level of water hardness/electrical conductivity when rearing Aedes mosquitoes for release purposes.
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Affiliation(s)
- Wadaka Mamai
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria; (H.M.); (N.S.B.S.); (T.W.); (O.B.M.); (H.Y.); (J.B.)
- Institut de Recherche Agricole pour le Développement (IRAD), PO. Box 2123 Yaoundé, Cameroon
- Correspondence:
| | - Hamidou Maiga
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria; (H.M.); (N.S.B.S.); (T.W.); (O.B.M.); (H.Y.); (J.B.)
- Institut de Recherche en Sciences de la Santé/Direction Régionale de l’Ouest (IRSS/DRO), 01 PO. Box 545 Bobo-Dioulasso, Burkina Faso
| | - Nanwintoum Sévérin Bimbilé Somda
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria; (H.M.); (N.S.B.S.); (T.W.); (O.B.M.); (H.Y.); (J.B.)
- Institut de Recherche en Sciences de la Santé/Direction Régionale de l’Ouest (IRSS/DRO), 01 PO. Box 545 Bobo-Dioulasso, Burkina Faso
- Laboratoire d’Entomologie Fondamentale et Appliquée (LEFA), Université Joseph Ki-Zerbo, 03 PO. Box 7021 Ouagadougou, Burkina Faso
| | - Thomas Wallner
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria; (H.M.); (N.S.B.S.); (T.W.); (O.B.M.); (H.Y.); (J.B.)
| | - Odet Bueno Masso
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria; (H.M.); (N.S.B.S.); (T.W.); (O.B.M.); (H.Y.); (J.B.)
| | - Christian Resch
- Soil and Water Management and Crop Nutrition Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria;
| | - Hanano Yamada
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria; (H.M.); (N.S.B.S.); (T.W.); (O.B.M.); (H.Y.); (J.B.)
| | - Jérémy Bouyer
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria; (H.M.); (N.S.B.S.); (T.W.); (O.B.M.); (H.Y.); (J.B.)
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Bouyer J, Vreysen MJB. Yes, Irradiated Sterile Male Mosquitoes Can Be Sexually Competitive! Trends Parasitol 2020; 36:877-880. [PMID: 33036938 DOI: 10.1016/j.pt.2020.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 09/09/2020] [Accepted: 09/09/2020] [Indexed: 01/01/2023]
Abstract
Adequate sexual competitiveness of sterile males is a prerequisite for genetic control methods, including the sterile insect technique. During the past decade several semi-field and open-field trials demonstrated that irradiated male mosquitoes can be competitive.
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Affiliation(s)
- Jérémy Bouyer
- Insect Pest Control Sub-programme, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria; CIRAD, UMR ASTRE CIRAD-INRA 'Animals, Health, Territories, Risks and Ecosystems', Campus international de Baillarguet, 34398 Montpellier, cedex 05, France; CIRAD, UMR ASTRE, F-97410 St Pierre, La Réunion, France.
| | - Marc J B Vreysen
- Insect Pest Control Sub-programme, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
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Unlu I, Rochlin I, Suman DS, Wang Y, Chandel K, Gaugler R. Large-Scale Operational Pyriproxyfen Autodissemination Deployment to Suppress the Immature Asian Tiger Mosquito (Diptera: Culicidae) Populations. JOURNAL OF MEDICAL ENTOMOLOGY 2020; 57:1120-1130. [PMID: 32006427 PMCID: PMC7448106 DOI: 10.1093/jme/tjaa011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Indexed: 05/15/2023]
Abstract
Effective suppression of container-inhabiting Asian Tiger [Aedes albopictus (Skuse)] (Diptera: Culicidae) and yellow fever [Aedes aegypti (L.)] (Diptera: Culicidae) mosquitoes presents one of the most intractable problems for modern mosquito control. Traditional tools often fail to control populations of these mosquito species, and are prohibitively expensive or have negative environmental impacts. Novel approaches and tools are urgently needed for integrated container-inhabiting mosquito management programs. One of the most promising techniques is autodissemination. We present the results of a long-term large-scale study conducted in a temperate urbanized environment representing typical Ae. albopictus habitats. Three treatment sites with autodissemination stations and three nearby reference sites were monitored for eggs, immature, and adult mosquitoes over a period of 3 yr from 2014 to 2016. Elevated larval and pupal mortality of 12-19% on average was the most notable outcome in sentinel cups of the treatment sites. The number of eggs in the treatment sites was significantly reduced in 2014, but not in 2015 or 2016. Adult populations remained similar in treatment and reference sites throughout the study. The impact of autodissemination on mosquito populations was lower than reported by previous investigations. Technical and logistical problems associated with wider coverage and working in multiple urban neighborhoods contributed to reduced efficacy. Incorporating autodissemination with routine mosquito control operations and commercializing this methodology for general public use will require further research on combining this tool with other novel or conventional technologies.
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Affiliation(s)
- Isik Unlu
- Center for Vector Biology, Rutgers University, New Brunswick, NJ
- Corresponding author, e-mail:
| | - Ilia Rochlin
- Center for Vector Biology, Rutgers University, New Brunswick, NJ
| | - Devi S Suman
- Center for Vector Biology, Rutgers University, New Brunswick, NJ
| | - Yi Wang
- Center for Vector Biology, Rutgers University, New Brunswick, NJ
| | - Kshitij Chandel
- Center for Vector Biology, Rutgers University, New Brunswick, NJ
| | - Randy Gaugler
- Center for Vector Biology, Rutgers University, New Brunswick, NJ
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12
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Laroche L, Ravel S, Baldet T, Lancelot R, Chandre F, Rossignol M, Le Goff V, Duhayon M, Fafet JF, Parker AG, Bouyer J. Boosting the sterile insect technique with pyriproxyfen increases tsetse flies Glossina palpalis gambiensis sterilization in controlled conditions. Sci Rep 2020; 10:9947. [PMID: 32561776 PMCID: PMC7305199 DOI: 10.1038/s41598-020-66850-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 05/26/2020] [Indexed: 01/16/2023] Open
Abstract
Tsetse flies (Diptera: Glossinidae) are the main vectors of animal and human trypanosomoses in Africa. The Sterile Insect Technique (SIT) has proven effective in controlling tsetse flies when applied to isolated populations but necessitates the production of large numbers of sterile males. A new approach, called boosted SIT, combining SIT with the contamination of wild females by sterile males coated with biocides has been proposed for large-scale control of vector populations. The aim of the study was to evaluate this new approach using pyriproxyfen on the riverine species Glossina palpalis gambiensis (Vanderplank, 1949) in the laboratory. The contamination dose and persistence of pyriproxyfen on sterile males, the impact of pyriproxyfen on male survival, and the dynamics of pyriproxyfen transfer from a sterile male to a female during mating, as well as the impact of pyriproxyfen on pupal production and adult emergence, were evaluated in the laboratory. For this purpose, a method of treatment by impregnating sterile males with a powder containing 40% pyriproxyfen has been developed. The results showed that the pyriproxyfen has no impact on the survival of sterile males. Pyriproxyfen persisted on sterile males for up to 10 days at a dose of 100 ng per fly. In addition, the horizontal transfer of pyriproxyfen from a treated sterile male to a female during mating could be measured with an average of 50 ng of pyriproxyfen transferred. After contacts without mating, the average quantity transferred was more than 10 ng. Finally, the pyriproxyfen powder was very effective on G. p. gambiensis leading to 0% emergence of the pupae produced by contaminated females. These promising results must be confirmed in the field. A large-scale assessment of this boosted pyriproxyfen-based SIT approach will be carried out against tsetse flies in Senegal (West Africa).
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Affiliation(s)
- L Laroche
- Intertryp, IRD, Cirad, Univ Montpellier, Montpellier, France. .,MIVEGEC, IRD, CNRS, Univ Montpellier, Montpellier, France.
| | - S Ravel
- Intertryp, IRD, Cirad, Univ Montpellier, Montpellier, France
| | - T Baldet
- ASTRE, Cirad, INRA, Univ Montpellier, Montpellier, France
| | - R Lancelot
- ASTRE, Cirad, INRA, Univ Montpellier, Montpellier, France
| | - F Chandre
- MIVEGEC, IRD, CNRS, Univ Montpellier, Montpellier, France
| | - M Rossignol
- MIVEGEC, IRD, CNRS, Univ Montpellier, Montpellier, France
| | - V Le Goff
- MIVEGEC, IRD, CNRS, Univ Montpellier, Montpellier, France
| | - M Duhayon
- ASTRE, Cirad, INRA, Univ Montpellier, Montpellier, France
| | | | - A G Parker
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, IAEA, Vienna, Austria.,Roppersbergweg 15, 2381, Laab im Walde, Austria
| | - J Bouyer
- Intertryp, IRD, Cirad, Univ Montpellier, Montpellier, France.,ASTRE, Cirad, INRA, Univ Montpellier, Montpellier, France.,Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, IAEA, Vienna, Austria
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13
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Modelling the control of Aedes albopictus mosquitoes based on sterile males release techniques in a tropical environment. Ecol Modell 2020. [DOI: 10.1016/j.ecolmodel.2020.109002] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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14
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Bouyer J, Yamada H, Pereira R, Bourtzis K, Vreysen MJB. Phased Conditional Approach for Mosquito Management Using Sterile Insect Technique. Trends Parasitol 2020; 36:325-336. [PMID: 32035818 DOI: 10.1016/j.pt.2020.01.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 12/18/2022]
Abstract
Mosquito-borne diseases represent a major threat to humankind. Recently, the incidence of malaria has stopped decreasing while that of dengue is increasing exponentially. Alternative mosquito-control methods are urgently needed. The sterile insect technique (SIT) has seen significant developments recently and may play an important role. However, testing and implementing SIT for vector control is challenging, and a phased conditional approach (PCA) is recommended, that is, advancement to the next phase depends on completion of activities in the previous one. We herewith present a PCA to test the SIT against mosquitoes within an area-wide-integrated pest-management programme, taking into account the experience gained with plant and livestock pests and the recent developments of the technique against mosquitoes.
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Affiliation(s)
- Jérémy Bouyer
- Insect Pest Control Sub-programme, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria; CIRAD, UMR ASTRE CIRAD-INRA 'AnimalS, health, Territories, Risks and Ecosystems', Campus International de Baillarguet, 34398 Montpellier Cedex 05, France.
| | - Hanano Yamada
- Insect Pest Control Sub-programme, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
| | - Rui Pereira
- Insect Pest Control Sub-programme, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Sub-programme, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
| | - Marc J B Vreysen
- Insect Pest Control Sub-programme, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
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15
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Ndeffo-Mbah ML, Pandey A, Atkins KE, Aksoy S, Galvani AP. The impact of vector migration on the effectiveness of strategies to control gambiense human African trypanosomiasis. PLoS Negl Trop Dis 2019; 13:e0007903. [PMID: 31805051 PMCID: PMC6894748 DOI: 10.1371/journal.pntd.0007903] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 11/04/2019] [Indexed: 02/06/2023] Open
Abstract
Background Several modeling studies have been undertaken to assess the feasibility of the WHO goal of eliminating gambiense human African trypanosomiasis (g-HAT) by 2030. However, these studies have generally overlooked the effect of vector migration on disease transmission and control. Here, we evaluated the impact of vector migration on the feasibility of interrupting transmission in different g-HAT foci. Methods We developed a g-HAT transmission model of a single tsetse population cluster that accounts for migration of tsetse fly into this population. We used a model calibration approach to constrain g-HAT incidence to ranges expected for high, moderate and low transmission settings, respectively. We used the model to evaluate the effectiveness of current intervention measures, including medical intervention through enhanced screening and treatment, and vector control, for interrupting g-HAT transmission in disease foci under each transmission setting. Results We showed that, in low transmission settings, under enhanced medical intervention alone, at least 70% treatment coverage is needed to interrupt g-HAT transmission within 10 years. In moderate transmission settings, a combination of medical intervention and a vector control measure with a daily tsetse mortality greater than 0.03 is required to achieve interruption of disease transmission within 10 years. In high transmission settings, interruption of disease transmission within 10 years requires a combination of at least 70% medical intervention coverage and at least 0.05 tsetse daily mortality rate from vector control. However, the probability of achieving elimination in high transmission settings decreases with an increased tsetse migration rate. Conclusion Our results suggest that the WHO 2030 goal of G-HAT elimination is, at least in theory, achievable. But the presence of tsetse migration may reduce the probability of interrupting g-HAT transmission in moderate and high transmission foci. Therefore, optimal vector control programs should incorporate monitoring and controlling of vector density in buffer areas around foci of g-HAT control efforts. Gambian human African trypanosomiasis (g-HAT), also known as sleeping sickness, is a vector-borne parasitic disease transmitted by tsetse flies. If untreated, g-HAT infection will usually result in death. Recently, the World Health Organization (WHO) has targeted g-HAT for elimination through achieving interruption of transmission by 2030. To help inform elimination efforts, mathematical models have been used to evaluate the feasibility of the WHO goals in different g-HAT transmission foci. However, these mathematical models have generally ignored the role that tsetse migration may have in the spread and reemergence of g-HAT. Using a mathematical model, we evaluate the impact of tsetse migration on the effectiveness of current intervention measures for achieving interruption of g-HAT transmission in different transmission foci. We consider different interventions such as enhanced screening and treatment and vector control. We show that vector control has a great potential for reducing transmission. Still, the presence and intensity of tsetse migration can undermine its effectiveness for interrupting disease transmission, especially in high transmission foci. Our results indicate the need of accounting for tsetse surveillance and migration data in designing vector control efforts for g-HAT elimination.
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Affiliation(s)
- Martial L. Ndeffo-Mbah
- Department of Veterinary Integrative Biosciences, Texas A&M College of Veterinary Medicine and Biomedical Sciences, College Station, TX, United States of America
- Department of Epidemiology and Biostatistics, Texas A&M School of Public Health, College Station, TX, United States of America
- * E-mail:
| | - Abhishek Pandey
- Center for Infectious Disease Modeling and Analysis, Yale School of Public Health, New Haven, CT, United States of America
- Department of Epidemiology and Microbial Diseases, Yale School of Public Health, New Haven, CT, United States of America
| | - Katherine E. Atkins
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Centre for Global Health, The Usher Institute for Population Health Sciences and Informatics, Edinburgh Medical School, The University of Edinburgh, Edinburgh, United Kingdom
| | - Serap Aksoy
- Department of Epidemiology and Microbial Diseases, Yale School of Public Health, New Haven, CT, United States of America
| | - Alison P. Galvani
- Center for Infectious Disease Modeling and Analysis, Yale School of Public Health, New Haven, CT, United States of America
- Department of Epidemiology and Microbial Diseases, Yale School of Public Health, New Haven, CT, United States of America
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16
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Mamai W, Bimbilé Somda NS, Maiga H, Konczal A, Wallner T, Bakhoum MT, Yamada H, Bouyer J. Black soldier fly (Hermetia illucens) larvae powder as a larval diet ingredient for mass-rearing Aedes mosquitoes. Parasite 2019; 26:57. [PMID: 31535969 PMCID: PMC6752115 DOI: 10.1051/parasite/2019059] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 09/02/2019] [Indexed: 12/12/2022] Open
Abstract
The mass production of mosquitoes is becoming more wide-spread due to the increased application of the sterile insect technique (SIT) and other genetic control programmes. Due to the variable availability and high cost of the bovine liver powder (BLP) constituent of many current larval diets, there is an urgent demand for new ingredients in order to support sustainable and efficient mosquito production while reducing rearing cost, without affecting the quality of the insects produced. Two black soldier fly (BSF) powder-based diet formulations (50% tuna meal, 35% BSF powder, 15% brewer's yeast and 50% tuna meal + 50% BSF powder) were tested for their suitability to support the development of Aedes aegypti and Ae. albopictus mosquitoes in mass-rearing conditions. Overall, the results indicate that the use of the BSF powder did not negatively impact the development and quality of the produced insects in terms of time to pupation, adult production and male flight ability. Furthermore, depending on the species and diet formulations, there were improvements in some parameters such as female body size, egg production, egg hatch rate and male longevity. BSF powder is a valuable ingredient that can effectively replace costly BLP for the mass production of high quality Ae. aegypti and Ae. albopictus mosquitoes. Both diet formulations can be used for Ae. aegypti showing high plasticity to nutrition sources. However, for Ae. albopictus we recommend the combination including brewer's yeast.
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Affiliation(s)
- Wadaka Mamai
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
- Institut de Recherche Agricole pour le Développement (IRAD) PO Box 2123 Yaoundé Cameroun
| | - Nanwintoum Sévérin Bimbilé Somda
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
- Institut de Recherche en Sciences de la Santé/Direction Régionale de l’Ouest (IRSS/DRO) 01 PO Box 545 Bobo-Dioulasso Burkina Faso
- Laboratoire d’Entomologie Fondamentale et Appliquée (LEFA) Université Joseph Ki-Zerbo Ouagadougou 03 PO Box 7021 Burkina Faso
| | - Hamidou Maiga
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
- Institut de Recherche en Sciences de la Santé/Direction Régionale de l’Ouest (IRSS/DRO) 01 PO Box 545 Bobo-Dioulasso Burkina Faso
| | - Anna Konczal
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
| | - Thomas Wallner
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
| | - Mame Thierno Bakhoum
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
| | - Hanano Yamada
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
| | - Jérémy Bouyer
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture PO Box 100 1400 Vienna Austria
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