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Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior

dc.contributor.authorNagoshi, R.N.
dc.contributor.authorGoergen, G.
dc.contributor.authorKoffi, D.
dc.contributor.authorAgboka, K.
dc.contributor.authorAdjevi, A.K.M.
dc.contributor.authordu Plessis, H.
dc.contributor.authorVan den Berg, J.
dc.contributor.authorTepa-Yotto, G.
dc.contributor.authorWinsou, J.K.
dc.contributor.authorMeagher, R.L.
dc.contributor.authorBrevault, T.
dc.date.accessioned2023-03-28T08:00:25Z
dc.date.available2023-03-28T08:00:25Z
dc.date.issued2022-02
dc.identifier.citationNagoshi, R.N., Goergen, G., Koffi, D., Agboka, K., Adjevi, A.K.M., Du Plessis, H., ... & Brévault, T. (2022). Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior. Scientific Reports, 12(1), 1-12.
dc.identifier.issn2045-2322
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8111
dc.description.abstractThe fall armyworm, Spodoptera frugiperda (J.E. Smith) is native to the Americas and a major pest of corn and several other crops of economic importance. The species has characteristics that make it of particular concern as an invasive pest, including broad host range, long-distance migration behavior, and a propensity for field-evolved pesticide resistance. The discovery of fall armyworm in western Africa in 2016 was followed by what was apparently a remarkably rapid spread throughout sub-Saharan Africa by 2018, causing economic damage estimated in the tens of billions USD and threatening the food security of the continent. Understanding the history of the fall armyworm invasion of Africa and the genetic composition of the African populations is critical to assessing the risk posed to different crop types, the development of effective mitigation strategies, and to make Africa less vulnerable to future invasions of migratory moth pests. This paper tested and expanded on previous studies by combining data from 22 sub-Saharan nations during the period from 2016 to 2019. The results support initial descriptions of the fall armyworm invasion, including the near absence of the strain that prefers rice, millet, and pasture grasses, while providing additional evidence that the magnitude and extent of FAW natural migration on the continent is more limited than expected. The results also show that a second entry of fall armyworm likely occurred in western Africa from a source different than that of the original introduction. These findings indicate that western Africa continues to be at high risk of future introductions of FAW, which could complicate mitigation efforts.
dc.description.sponsorshipUnited States Agency for International Development
dc.format.extent1-12
dc.language.isoen
dc.subjectSpodoptera Frugiperda
dc.subjectFall Armywarm
dc.subjectGenotypes
dc.titleGenetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior
dc.typeJournal Article
cg.contributor.affiliationUnited States Department of Agriculture
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationWest African Center for Applied Researches and Innovations, Togo
cg.contributor.affiliationUniversité de Lomé
cg.contributor.affiliationNorth-West University, South Africa
cg.contributor.affiliationUniversité Nationale d'Agriculture, Bénin
cg.contributor.affiliationNorwegian University of Life Sciences
cg.contributor.affiliationNorwegian Institute of Bioeconomy Research
cg.contributor.affiliationCentre de Coopération Internationale en Recherche Agronomique pour le Développement
cg.contributor.affiliationUniversité de Montpellier
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryBenin (Dahomey)
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidNAGOSHI:2022
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectClimate Change
cg.iitasubjectFood Security
cg.iitasubjectPests of Plants
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.journalScientific Reports
cg.notesOpen Access Journal; Published online: 04 Feb 2022
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1038/s41598-022-05781-z
cg.iitaauthor.identifierGeorg Goergen: 0000-0003-4496-0495
cg.iitaauthor.identifierGhislain Tepa-Yotto: 0000-0002-9650-8313
cg.futureupdate.requiredNo
cg.identifier.issue1: 1941
cg.identifier.volume12


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