Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of Insecticides
Fall armyworm (FAW), <i>Spodoptera frugiperda</i>, is a major pest of maize in the Americas and recently invaded the Eastern hemisphere. It was first detected in India in 2018 and is considered a major threat to maize production. FAW control largely relies on the application of chemical...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/12/8/758 |
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| author | Mahesh Kulye Sonja Mehlhorn Debora Boaventura Nigel Godley Sreedevi Kodikoppalu Venkatesh Thimmaraju Rudrappa Tara Charan Dinesh Rathi Ralf Nauen |
| author_facet | Mahesh Kulye Sonja Mehlhorn Debora Boaventura Nigel Godley Sreedevi Kodikoppalu Venkatesh Thimmaraju Rudrappa Tara Charan Dinesh Rathi Ralf Nauen |
| author_sort | Mahesh Kulye |
| collection | DOAJ |
| description | Fall armyworm (FAW), <i>Spodoptera frugiperda</i>, is a major pest of maize in the Americas and recently invaded the Eastern hemisphere. It was first detected in India in 2018 and is considered a major threat to maize production. FAW control largely relies on the application of chemical insecticides and transgenic crops expressing <i>Bacillus thuringiensis</i> insecticidal proteins. Assessing FAW resistance and insecticide susceptibility is a cornerstone to develop sustainable resistance management strategies. In this study, we conducted more than 400 bioassays to assess the efficacy of nine insecticides from seven mode-of-action classes against 47 FAW populations collected in 2019 and 2020 across various geographical areas in India. The resistance status of the field-collected populations was compared to an Indian population sampled in 2018, and an insecticide susceptible reference population collected in 2005 in Brazil. Low to moderate resistance levels were observed for thiodicarb, chlorpyriphos, deltamethrin, chlorantraniliprole and flubendiamide in several populations (including the reference population collected in 2018). The highest resistance ratios were observed for deltamethrin which likely compromises recommended label rates for pyrethroid insecticides in general. Our data provide a useful baseline for future FAW resistance monitoring initiatives and highlight the need to implement insecticide resistance management strategies. |
| first_indexed | 2024-03-10T08:42:34Z |
| format | Article |
| id | doaj.art-0a4435310f7045f2b079dfdc73ff996e |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T08:42:34Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-0a4435310f7045f2b079dfdc73ff996e2023-11-22T08:08:08ZengMDPI AGInsects2075-44502021-08-0112875810.3390/insects12080758Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of InsecticidesMahesh Kulye0Sonja Mehlhorn1Debora Boaventura2Nigel Godley3Sreedevi Kodikoppalu Venkatesh4Thimmaraju Rudrappa5Tara Charan6Dinesh Rathi7Ralf Nauen8Crop Science Division, Bayer AG, Bangalore 560045, IndiaCrop Science Division, R&D, Bayer AG, 40789 Monheim, GermanyCrop Science Division, R&D, Bayer AG, 40789 Monheim, GermanyCrop Science Division, R&D, Bayer AG, 40789 Monheim, GermanyCrop Science Division, Bayer AG, Bangalore 560045, IndiaCrop Science Division, Bayer AG, Bangalore 560045, IndiaCoWrks India Private, Bayer AG, New Delhi 110037, IndiaCoWrks India Private, Bayer AG, New Delhi 110037, IndiaCrop Science Division, R&D, Bayer AG, 40789 Monheim, GermanyFall armyworm (FAW), <i>Spodoptera frugiperda</i>, is a major pest of maize in the Americas and recently invaded the Eastern hemisphere. It was first detected in India in 2018 and is considered a major threat to maize production. FAW control largely relies on the application of chemical insecticides and transgenic crops expressing <i>Bacillus thuringiensis</i> insecticidal proteins. Assessing FAW resistance and insecticide susceptibility is a cornerstone to develop sustainable resistance management strategies. In this study, we conducted more than 400 bioassays to assess the efficacy of nine insecticides from seven mode-of-action classes against 47 FAW populations collected in 2019 and 2020 across various geographical areas in India. The resistance status of the field-collected populations was compared to an Indian population sampled in 2018, and an insecticide susceptible reference population collected in 2005 in Brazil. Low to moderate resistance levels were observed for thiodicarb, chlorpyriphos, deltamethrin, chlorantraniliprole and flubendiamide in several populations (including the reference population collected in 2018). The highest resistance ratios were observed for deltamethrin which likely compromises recommended label rates for pyrethroid insecticides in general. Our data provide a useful baseline for future FAW resistance monitoring initiatives and highlight the need to implement insecticide resistance management strategies.https://www.mdpi.com/2075-4450/12/8/758fall armyworminsecticide resistanceresistance managementpyrethroidcornmaize |
| spellingShingle | Mahesh Kulye Sonja Mehlhorn Debora Boaventura Nigel Godley Sreedevi Kodikoppalu Venkatesh Thimmaraju Rudrappa Tara Charan Dinesh Rathi Ralf Nauen Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of Insecticides Insects fall armyworm insecticide resistance resistance management pyrethroid corn maize |
| title | Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of Insecticides |
| title_full | Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of Insecticides |
| title_fullStr | Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of Insecticides |
| title_full_unstemmed | Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of Insecticides |
| title_short | Baseline Susceptibility of <em>Spodoptera frugiperda</em> Populations Collected in India towards Different Chemical Classes of Insecticides |
| title_sort | baseline susceptibility of em spodoptera frugiperda em populations collected in india towards different chemical classes of insecticides |
| topic | fall armyworm insecticide resistance resistance management pyrethroid corn maize |
| url | https://www.mdpi.com/2075-4450/12/8/758 |
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