Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior
The 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.
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Language: | eng |
Subjects: | H10 - Ravageurs des plantes, Spodoptera frugiperda, infestation, espèce envahissante, organisme nuisible, dynamique des populations, génétique des populations, http://aims.fao.org/aos/agrovoc/c_25452, http://aims.fao.org/aos/agrovoc/c_3855, http://aims.fao.org/aos/agrovoc/c_49865, http://aims.fao.org/aos/agrovoc/c_5741, http://aims.fao.org/aos/agrovoc/c_6111, http://aims.fao.org/aos/agrovoc/c_34326, http://aims.fao.org/aos/agrovoc/c_165, |
Online Access: | http://agritrop.cirad.fr/603370/ http://agritrop.cirad.fr/603370/2/Nagoshi2022Fawgenetics.pdf |
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dig-cirad-fr-6033702024-01-29T19:05:32Z http://agritrop.cirad.fr/603370/ http://agritrop.cirad.fr/603370/ Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior. Nagoshi Rodney N., Goergen Georg, Koffi Djima, Agboka Komi, Mawuko Adjevi Anani Kossi, Du Plessis Hannalene, Van den Berg Johnnie, Tepa-Yotto Ghislain T., Winsou Jeannette K., Meagher Jr. Robert L., Brévault Thierry. 2022. Scientific Reports, 12:1941, 12 p.https://doi.org/10.1038/s41598-022-05781-z <https://doi.org/10.1038/s41598-022-05781-z> Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior Nagoshi, Rodney N. Goergen, Georg Koffi, Djima Agboka, Komi Mawuko Adjevi, Anani Kossi Du Plessis, Hannalene Van den Berg, Johnnie Tepa-Yotto, Ghislain T. Winsou, Jeannette K. Meagher Jr., Robert L. Brévault, Thierry eng 2022 Scientific Reports H10 - Ravageurs des plantes Spodoptera frugiperda infestation espèce envahissante organisme nuisible dynamique des populations génétique des populations http://aims.fao.org/aos/agrovoc/c_25452 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_49865 http://aims.fao.org/aos/agrovoc/c_5741 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_34326 Afrique http://aims.fao.org/aos/agrovoc/c_165 The 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. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/603370/2/Nagoshi2022Fawgenetics.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1038/s41598-022-05781-z 10.1038/s41598-022-05781-z info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-022-05781-z info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1038/s41598-022-05781-z |
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H10 - Ravageurs des plantes Spodoptera frugiperda infestation espèce envahissante organisme nuisible dynamique des populations génétique des populations http://aims.fao.org/aos/agrovoc/c_25452 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_49865 http://aims.fao.org/aos/agrovoc/c_5741 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 H10 - Ravageurs des plantes Spodoptera frugiperda infestation espèce envahissante organisme nuisible dynamique des populations génétique des populations http://aims.fao.org/aos/agrovoc/c_25452 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_49865 http://aims.fao.org/aos/agrovoc/c_5741 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 |
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H10 - Ravageurs des plantes Spodoptera frugiperda infestation espèce envahissante organisme nuisible dynamique des populations génétique des populations http://aims.fao.org/aos/agrovoc/c_25452 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_49865 http://aims.fao.org/aos/agrovoc/c_5741 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 H10 - Ravageurs des plantes Spodoptera frugiperda infestation espèce envahissante organisme nuisible dynamique des populations génétique des populations http://aims.fao.org/aos/agrovoc/c_25452 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_49865 http://aims.fao.org/aos/agrovoc/c_5741 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 Nagoshi, Rodney N. Goergen, Georg Koffi, Djima Agboka, Komi Mawuko Adjevi, Anani Kossi Du Plessis, Hannalene Van den Berg, Johnnie Tepa-Yotto, Ghislain T. Winsou, Jeannette K. Meagher Jr., Robert L. Brévault, Thierry Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior |
description |
The 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. |
format |
article |
topic_facet |
H10 - Ravageurs des plantes Spodoptera frugiperda infestation espèce envahissante organisme nuisible dynamique des populations génétique des populations http://aims.fao.org/aos/agrovoc/c_25452 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_49865 http://aims.fao.org/aos/agrovoc/c_5741 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 |
author |
Nagoshi, Rodney N. Goergen, Georg Koffi, Djima Agboka, Komi Mawuko Adjevi, Anani Kossi Du Plessis, Hannalene Van den Berg, Johnnie Tepa-Yotto, Ghislain T. Winsou, Jeannette K. Meagher Jr., Robert L. Brévault, Thierry |
author_facet |
Nagoshi, Rodney N. Goergen, Georg Koffi, Djima Agboka, Komi Mawuko Adjevi, Anani Kossi Du Plessis, Hannalene Van den Berg, Johnnie Tepa-Yotto, Ghislain T. Winsou, Jeannette K. Meagher Jr., Robert L. Brévault, Thierry |
author_sort |
Nagoshi, Rodney N. |
title |
Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior |
title_short |
Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior |
title_full |
Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior |
title_fullStr |
Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior |
title_full_unstemmed |
Genetic studies of fall armyworm indicate a new introduction into Africa and identify limits to its migratory behavior |
title_sort |
genetic studies of fall armyworm indicate a new introduction into africa and identify limits to its migratory behavior |
url |
http://agritrop.cirad.fr/603370/ http://agritrop.cirad.fr/603370/2/Nagoshi2022Fawgenetics.pdf |
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