Insecticide resistance and control failure likelihood among populations of the boll weevil (Anthonomus grandis) from Mato Grosso (Brazil)

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dc.creatorSharrine Omari Domingues Oliveira-Marra
dc.creatorRaul Narciso Carvalho Guedes
dc.creatorCristina Schetino Bastos
dc.creatorPedro Henrique Alves Marra
dc.creatorLucia Madalena Vivan
dc.creatorAnderson de Moura Zanine
dc.date2019
dc.date.accessioned2026-07-07T03:51:58Z
dc.descriptionThe cotton producers from southern Mato Grosso are currently experiencing control failure with the use of the use of insecticides against the cotton boll weevil Anthonomus grandis Boheman, the main pest species of this commodity. Therefore, the present study was designed to survey insecticide resistance and the associated likelihood of control failure among boll weevil populations in the region. Ten insect populations were sampled during the 2016/2017 season and subjected to time-mortality (contact) bioassays in glass vials impregnated with dried insecticide residues at their respective label rates. The three insecticides most frequently used in the region were surveyed: the organophosphate malathion and the pyrethroids beta-cyfluthrin and zeta-cypermethrin. The survival curves showed estimates of the respective median survival time (LT50) for each combination of insecticide and insect copulation. However, there were no significant differences in susceptibility among populations. The estimates of control failure likelihood for each compound at their respective label rates also indicated negligible risk of control failure with their use. These findings are consistent with time-mortality results indicating the lack of insecticide resistant populations at the surveyed sampling sites, suggesting that the reported field control failures result from other causes such as problems with insecticide application.
dc.formatapplication/pdf
dc.identifier1679-9275
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303060470055
dc.identifier10.4025/actasciagron.v41i1.42714
dc.identifier.urihttp://hdl.handle.net/123456789/445342
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3030
dc.rightsActa Scientiarum. Agronomy
dc.sourceActa Scientiarum. Agronomy (Brasil) Vol.41
dc.subjectAgrociencias
dc.titleInsecticide resistance and control failure likelihood among populations of the boll weevil (Anthonomus grandis) from Mato Grosso (Brazil)
dc.typeartículo científico

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Acta Scientiarum. Agronomy - Universidade Estadual de Maringá