Susceptibilidade de lagartas dos biótipos milho e arroz de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) a inseticidas com diferentes modos de ação

Busato, Gustavo Rossato; Grützmacher, Anderson Dionei; Garcia, Mauro Silveira; Zotti, Moisés João; Nörnberg, Sandro Daniel; Magalhães, Taís; Magalhães, Juliana de Bandeira

doi:10.1590/s0103-84782006000100003

Cited by 12 publications

(2 citation statements)

References 13 publications

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“…These biotypes are sympatric and morphologically identical but differ in physiological characteristics and reproductive isolation (Pashley 1988). Significant differences in susceptibility of these strains to insecticides were also found (Busato et al 2006). In addition, both FAW strains have already been described in Argentina (Virla et al 2008).…”

mentioning

confidence: 94%

Direct Dna Amplification from Fall Armyworm (Lepidoptera: Noctuidae) Samples

Loto

Romero

Baigorí

et al. 2013

Florida Entomologist

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confidence: 94%

Direct Dna Amplification from Fall Armyworm (Lepidoptera: Noctuidae) Samples

Loto

Romero

Baigorí

et al. 2013

Florida Entomologist

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“…[11][12][13] Among the oldest insecticides commercially available, organophosphates are still one of the major groups used for controlling FAW in various crops. 14,15 Organophosphates act on the nervous system, killing insects by inhibiting the acetylcholinesterase enzyme. [16][17][18] The organophosphate chlorpyrifos has been widely used against FAW in South America since the 1990s, but from the early 2000s studies have stated a low susceptibility of FAW to this mode of action in Brazil.…”

Section: Introductionmentioning

confidence: 99%

Field‐evolved resistance to chlorpyrifos by Spodoptera frugiperda (Lepidoptera: Noctuidae): Inheritance mode, cross‐resistance patterns, and synergism

Garlet

Gubiani

Palharini

et al. 2021

Pest Management Science

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BACKGROUND: Fall armyworm (FAW), Spodoptera frugiperda (Smith), is an economically important pest worldwide. In this study, we selected a genotype of FAW resistant to chlorpyrifos from a field-collected population, characterized the genetic basis of resistance, and evaluated cross-resistance and mechanisms of resistance using synergists. RESULTS:The LD 50 values of chlorpyrifos for the resistant (Clorp-R) and susceptible (Sus) FAW genotypes were 24.26 and 0.023 ∼g per larva, respectively, representing a resistance ratio > 1050-fold. The LD 50 values of chlorpyrifos against heterozygotes were 3.34 and 4.00 ∼g per larva, suggesting that resistance is autosomally inherited. The chlorpyrifos resistance in FAW was influenced by few genes, with the minimum numbers of segregations being 1.74 and 1.88. On chlorpyrifos-sprayed plants and leaves, Clorp-R and heterozygote genotypes showed >95% and >52% survival, respectively, whereas the Sus genotype had no survival, indicating that the resistance is incompletely dominant at the field rate of chlorpyrifos. The Clorp-R genotype presented some cross-resistance to acephate, but low cross-resistance to thiodicarb, methomyl, chlorfenapyr, flubendiamide, methoxyfenozide, spinetoram, and teflubenzuron. The synergists piperonyl butoxide, diethyl maleate, and S,S,S-tributyl phosphorotrithiotate did not have relevant effects on the Clorp-R genotype, suggesting a minor role for metabolic resistance.CONCLUSIONS: The inheritance of chlorpyrifos resistance in FAW was characterized as autosomal, incompletely dominant, and polygenic, with metabolic resistance playing a small role in the detoxification of chlorpyrifos. Low cross-resistance between chlorpyrifos and other mode of action (MoA) insecticides occurs in FAW, highlighting the importance of considering the rotation of MoA as a strategy to delay resistance.

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Não-Preferência Para Oviposição E Alimentação De Spodoptera Frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) Por Cultivares De Amendoim

2010

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RESUMO Este trabalho buscou selecionar cultivares de amendoim resistentes a Spodoptera frugiperda, dos tipos não-preferência para oviposição e alimentação, em testes com e sem chance de escolha. Utilizaram-se cultivares de amendoim de hábitos de crescimento ereto (IAC 5, IAC 8112, IAC 22 e IAC Tatu ST) e rasteiro (IAC 503, IAC 505, IAC 147, IAC 125, IAC Caiapó e IAC Runner 886). Os testes de não-preferência para oviposição foram realizados com adultos recém-emergidos, os quais foram alimentados com solução de mel a 10%, permanecendo nas gaiolas por quatro dias até o início das avaliações. Estas consistiram na quantificação do número de ovos e posturas, com posterior cálculo do número de ovos por postura. Para os testes de não-preferência para alimentação foram colocados discos foliares das cultivares em placas de Petri, liberando uma lagarta de terceiro ínstar por cultivar. Avaliou-se a atratividade a 1, 5, 10, 15, 30, 60, 120, 360, 720; 1.440 minutos, contando-se o número de lagartas que se alimentavam nas cultivares e, ao término do experimento, quantificou-se a área foliar consumida por cultivar. Nos testes de não-preferência para oviposição ou alimentação, com ou sem chance, nenhuma cultivar de hábitos de crescimento ereto ou rasteiro influenciou a oviposição ou alimentação de S. frugiperda. Dessa maneira, as cultivares de amendoim não apresentaram resistência dos tipos não-preferência para oviposição e alimentação.

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Susceptibilidade de lagartas dos biótipos milho e arroz de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) a inseticidas com diferentes modos de ação

Cited by 12 publications

References 13 publications

Direct Dna Amplification from Fall Armyworm (Lepidoptera: Noctuidae) Samples

Direct Dna Amplification from Fall Armyworm (Lepidoptera: Noctuidae) Samples

Field‐evolved resistance to chlorpyrifos by Spodoptera frugiperda (Lepidoptera: Noctuidae): Inheritance mode, cross‐resistance patterns, and synergism

Não-Preferência Para Oviposição E Alimentação De Spodoptera Frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) Por Cultivares De Amendoim

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