Intraspecific variation in the Chrysodeixis includens (Walker) (Lepidoptera: Noctuidae) susceptibility to insecticides

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dc.creatorSamanta Souza Restelatto
dc.creatorPaulo Eduardo Wille
dc.creatorNayara Buss
dc.creatorCleiton Luis Wille
dc.creatorMari Inês Carissimi Boff
dc.creatorRafael Ermenegildo Contini
dc.creatorCláudio Roberto Franco
dc.date2021
dc.date.accessioned2026-07-07T04:31:51Z
dc.descriptionThe looper caterpillar Chrysodeixis includens (Walker) is considered the main defoliating pest in soybean crops, which contributes to yield losses. Delaying its resistance to insecticides is a major challenge in its management. This study aimed to characterize the susceptibility of C. includens to flubendiamide, cyantraniliprole, spinetoram and methomyl, as well as to establish a diagnostic concentration for monitoring resistance. The insecticide was applied to the surface of the artificial diet. For the dose-response curve, concentrations that resulted in 5 to 99 % mortality were used to estimate the lethal concentrations (LC50 and LC99) and resistance ratios (RR50 and RR99). The diagnostic concentrations were based on concentrations that provided 90 to 99 % mortality in the susceptible reference population. For flubendiamide and methomyl, the decrease in the susceptibility resulted in estimated RR50 of 6.2 to 24.2 and 4.4 to 19.6 times, respectively. For cyantraniliprole and spinetoram, there was little difference in susceptibility among the populations, with RR99 lower than 6.1 times. Differences in the susceptibility of C. includens were evident from concentrations of 0.5053, 5.053, 0.1579 and 28.42 μg cm- ², respectively for flubendiamide, cyantraniliprole, spinetoram and methomyl.
dc.formatapplication/pdf
dc.identifier1517-6398
dc.identifierhttps://www.redalyc.org/articulo.oa?id=253068585046
dc.identifierhttps://www.redalyc.org/journal/2530/253068585046/
dc.identifierhttps://www.redalyc.org/journal/2530/253068585046/html/
dc.identifierhttps://www.redalyc.org/journal/2530/253068585046/253068585046.epub
dc.identifierhttps://www.redalyc.org/journal/2530/253068585046/movil
dc.identifier10.1590/1983-40632021v5167353
dc.identifier.urihttp://hdl.handle.net/123456789/464211
dc.languageen
dc.publisherUniversidade Federal de Goiás
dc.relationhttp://www.redalyc.org/revista.oa?id=2530
dc.rightsPesquisa Agropecuária Tropical
dc.sourcePesquisa Agropecuária Tropical (Brasil) Vol.51
dc.subjectAgrociencias
dc.titleIntraspecific variation in the Chrysodeixis includens (Walker) (Lepidoptera: Noctuidae) susceptibility to insecticides
dc.typeartículo científico

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Pesquisa Agropecuária Tropical - Universidade Federal de Goiás