Geographic monitoring of insecticide resistance mutations in native and invasive populations of the fall armyworm

Yainna Kumarihami Sudeeptha, Nègre Nicolas, Silvie Pierre, Brévault Thierry, Tay Wee Tek, Gordon Karl H.J., D'Alençon Emmanuelle, Walsh Thomas, Nam Kiwoong. 2021. Geographic monitoring of insecticide resistance mutations in native and invasive populations of the fall armyworm. Insects, 12 (5), n.spéc. Recent Advances in the Understanding of Molecular Mechanisms of Resistance in Noctuid Pests:468, 12 p.

https://doi.org/10.3390/insects12050468

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

Prévisualisation

Version publiée - Anglais
Sous licence

.
Yainna-et-al2021(final).pdf
Télécharger (1MB) | Prévisualisation

Quartile : Q1, Sujet : ENTOMOLOGY

Note générale : L'article original date de 2012 et a été écrit en langue française. La version anglais a été traduite en 2021

Résumé : Field evolved resistance to insecticides is one of the main challenges in pest control. The fallarmyworm (FAW) is a lepidopteran pest species causing severe crop losses, especially corn. While native to the Americas, the presence of FAW was confirmed in West Africa in 2016. Since then, the FAW has been detected in over 70 countries covering sub-Saharan Africa, the Middle East, North Africa, South Asia, Southeast Asia, and Oceania. In this study, we tested whether this invasion was accompanied by the spread of resistance mutations from native to invasive areas. We observed that mutations causing Bt resistance at ABCC2 genes were observed only in native populations where the mutations were initially reported. Invasive populations were found to have higher gene numbers of cytochrome P450 genes than native populations and a higher proportion of multiple resistance mutations at acetylcholinesterase genes, supporting strong selective pressure for resistanceagainst synthetic insecticides. This result explains the susceptibility to Bt insecticides and resistance to various synthetic insecticides in Chinese populations. These results highlight the necessity of regular and standardized monitoring of insecticide resistance in invasive populations using both genomic approaches and bioassay experiments.

Mots-clés Agrovoc : résistance aux insecticides, lutte antiravageur, surveillance des déprédateurs, espèce envahissante, organisme indigène, Bacillus thuringiensis, Spodoptera frugiperda, résistance aux pesticides

Mots-clés géographiques Agrovoc : Bénin, Malawi, Ouganda, Chine, Inde, États-Unis d'Amérique, Mississippi, Floride, Porto Rico, Brésil, Guyane française, Guadeloupe, Mexique, France