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Lutrat C, Burckbuchler M, Olmo RP, Beugnon R, Fontaine A, Akbari OS, Argilés-Herrero R, Baldet T, Bouyer J, Marois E. Combining two genetic sexing strains allows sorting of non-transgenic males for Aedes genetic control. Commun Biol 2023; 6:646. [PMID: 37328568 PMCID: PMC10275924 DOI: 10.1038/s42003-023-05030-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 06/08/2023] [Indexed: 06/18/2023] Open
Abstract
Chemical control of disease vectoring mosquitoes Aedes albopictus and Aedes aegypti is costly, unsustainable, and increasingly ineffective due to the spread of insecticide resistance. The Sterile Insect Technique is a valuable alternative but is limited by slow, error-prone, and wasteful sex-separation methods. Here, we present four Genetic Sexing Strains (two for each Aedes species) based on fluorescence markers linked to the m and M sex loci, allowing for the isolation of transgenic males. Furthermore, we demonstrate how combining these sexing strains enables the production of non-transgenic males. In a mass-rearing facility, 100,000 first instar male larvae could be sorted in under 1.5 h with an estimated 0.01-0.1% female contamination on a single machine. Cost-efficiency analyses revealed that using these strains could result in important savings while setting up and running a mass-rearing facility. Altogether, these Genetic Sexing Strains should enable a major upscaling in control programmes against these important vectors.
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Affiliation(s)
- Célia Lutrat
- CIRAD, UMR ASTRE, F-34398, Montpellier, France.
- ASTRE, CIRAD, INRA, Univ. Montpellier, Montpellier, France.
- Université de Montpellier, Montpellier, France.
- CNRS UPR9022, INSERM U1257, Université de Strasbourg, Strasbourg, France.
| | | | | | - Rémy Beugnon
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany
- Institute of Biology, Leipzig University, Puschstrasse 4, 04103, Leipzig, Germany
| | - Albin Fontaine
- Unité Parasitologie et Entomologie, Département Microbiologie et maladies infectieuses, Institut de Recherche Biomédicale des Armées (IRBA), Marseille, France
| | - Omar S Akbari
- School of Biological Sciences, Department of Cell and Developmental Biology, University of California, San Diego, CA, 92093, USA
| | | | - Thierry Baldet
- CIRAD, UMR ASTRE, F-34398, Montpellier, France
- CIRAD, UMR ASTRE, Sainte-Clotilde, F-97490, Reunion, France
| | - Jérémy Bouyer
- CIRAD, UMR ASTRE, F-34398, Montpellier, France
- CIRAD, UMR ASTRE, Saint-Pierre, F-97410, Reunion, France
- Insect Pest Control Sub-Programme, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency (IAEA), Vienna, Austria
| | - Eric Marois
- CNRS UPR9022, INSERM U1257, Université de Strasbourg, Strasbourg, France.
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Lutrat C, Giesbrecht D, Marois E, Whyard S, Baldet T, Bouyer J. Sex Sorting for Pest Control: It's Raining Men! Trends Parasitol 2019; 35:649-662. [PMID: 31255488 DOI: 10.1016/j.pt.2019.06.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 05/30/2019] [Accepted: 06/01/2019] [Indexed: 12/16/2022]
Abstract
In the pursuit of better pest- and vector-control strategies, attention returns to an old proven technology, the sterile insect technique (SIT) and related insect population-suppression methods. A major obstacle for any of these approaches that involves the release of sterile males is the separation of males from females during the mass rearing stage, in order to improve the cost-efficiency of these methods and to prevent the release of biting and disease-vectoring females. This review describes recent sex-sorting developments in dipteran flies with an emphasis on assessing the suitability of these methods for large-scale rearing of male vectors for mass release.
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Affiliation(s)
- Célia Lutrat
- CIRAD, UMR ASTRE, F-34398, Montpellier, France; ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France; Université de Montpellier, Montpellier, France
| | - David Giesbrecht
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Eric Marois
- CNRS UPR9022, INSERM U963, Institut de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Strasbourg, France
| | - Steve Whyard
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Thierry Baldet
- CIRAD, UMR ASTRE, F-34398, Montpellier, France; ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France
| | - Jérémy Bouyer
- CIRAD, UMR ASTRE, F-34398, Montpellier, France; Insect Pest Control, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency (IAEA), Vienna, Austria. @cirad.fr
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