Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved Resistance
Susceptibility monitoring to insecticides is a key component to implementing insecticide resistance management (IRM) programs. In this research, the susceptibility to teflubenzuron in <i>Spodoptera frugiperda</i> (J.E Smith) was monitored in more than 200 field-collected populations from...
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MDPI AG
2023-01-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/14/2/129 |
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| author | Fernando Semmelroth de Assunção e Amaral Rubens Hideo Kanno Antonio Rogério Bezerra do Nascimento Aline Sartori Guidolin Celso Omoto |
| author_facet | Fernando Semmelroth de Assunção e Amaral Rubens Hideo Kanno Antonio Rogério Bezerra do Nascimento Aline Sartori Guidolin Celso Omoto |
| author_sort | Fernando Semmelroth de Assunção e Amaral |
| collection | DOAJ |
| description | Susceptibility monitoring to insecticides is a key component to implementing insecticide resistance management (IRM) programs. In this research, the susceptibility to teflubenzuron in <i>Spodoptera frugiperda</i> (J.E Smith) was monitored in more than 200 field-collected populations from major corn-growing regions of Brazil, from 2004 to 2020. Initially, we defined a diagnostic concentration of 10 µg mL<sup>−1</sup> of teflubenzuron using a diet-overlay bioassay for monitoring the susceptibility. A variation in the susceptibility to teflubenzuron in <i>S. frugiperda</i> was detected among populations from different locations. We also detected a significant reduction in the susceptibility to teflubenzuron throughout time in all the populations of <i>S. frugiperda</i> evaluated, with larval survival at diagnostic concentration varying from values of <5% in 2004 to up 80% in 2020. Thus, this research provides evidence of field-evolved resistance of <i>S. frugiperda</i> to teflubenzuron and reinforces that IRM practices are urgently needed to be implemented in Brazil. |
| first_indexed | 2024-03-11T08:39:37Z |
| format | Article |
| id | doaj.art-5f710e8a60684ae68c6b09cd1c048452 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-11T08:39:37Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-5f710e8a60684ae68c6b09cd1c0484522023-11-16T21:14:14ZengMDPI AGInsects2075-44502023-01-0114212910.3390/insects14020129Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved ResistanceFernando Semmelroth de Assunção e Amaral0Rubens Hideo Kanno1Antonio Rogério Bezerra do Nascimento2Aline Sartori Guidolin3Celso Omoto4Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba 13418-900, BrazilDepartment of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba 13418-900, BrazilDepartment of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba 13418-900, BrazilDepartment of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba 13418-900, BrazilDepartment of Entomology and Acarology, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba 13418-900, BrazilSusceptibility monitoring to insecticides is a key component to implementing insecticide resistance management (IRM) programs. In this research, the susceptibility to teflubenzuron in <i>Spodoptera frugiperda</i> (J.E Smith) was monitored in more than 200 field-collected populations from major corn-growing regions of Brazil, from 2004 to 2020. Initially, we defined a diagnostic concentration of 10 µg mL<sup>−1</sup> of teflubenzuron using a diet-overlay bioassay for monitoring the susceptibility. A variation in the susceptibility to teflubenzuron in <i>S. frugiperda</i> was detected among populations from different locations. We also detected a significant reduction in the susceptibility to teflubenzuron throughout time in all the populations of <i>S. frugiperda</i> evaluated, with larval survival at diagnostic concentration varying from values of <5% in 2004 to up 80% in 2020. Thus, this research provides evidence of field-evolved resistance of <i>S. frugiperda</i> to teflubenzuron and reinforces that IRM practices are urgently needed to be implemented in Brazil.https://www.mdpi.com/2075-4450/14/2/129fall armywormfield-evolved resistancechitin synthesis inhibitorsmonitoring |
| spellingShingle | Fernando Semmelroth de Assunção e Amaral Rubens Hideo Kanno Antonio Rogério Bezerra do Nascimento Aline Sartori Guidolin Celso Omoto Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved Resistance Insects fall armyworm field-evolved resistance chitin synthesis inhibitors monitoring |
| title | Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved Resistance |
| title_full | Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved Resistance |
| title_fullStr | Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved Resistance |
| title_full_unstemmed | Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved Resistance |
| title_short | Trends towards Lower Susceptibility of <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) to Teflubenzuron in Brazil: An Evidence for Field-Evolved Resistance |
| title_sort | trends towards lower susceptibility of i spodoptera frugiperda i lepidoptera noctuidae to teflubenzuron in brazil an evidence for field evolved resistance |
| topic | fall armyworm field-evolved resistance chitin synthesis inhibitors monitoring |
| url | https://www.mdpi.com/2075-4450/14/2/129 |
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