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Western corn rootworm pyrethroid resistance confirmed by aerial application simulations of commercial insecticides.
Souza, Dariane; Vieira, Bruno C; Fritz, Bradley K; Hoffmann, Wesley C; Peterson, Julie A; Kruger, Greg R; Meinke, Lance J.
Afiliación
  • Souza D; University of Nebraska-Lincoln, Department of Entomology, Lincoln, 68583, USA.
  • Vieira BC; University of Nebraska-Lincoln, Department of Agronomy and Horticulture, North Platte, 69101, USA.
  • Fritz BK; USDA-ARS, Aerial Application Technology Research Unit, College Station, 77845, USA.
  • Hoffmann WC; USDA-ARS, Aerial Application Technology Research Unit, College Station, 77845, USA.
  • Peterson JA; University of Nebraska-Lincoln, Department of Entomology, North Platte, 69101, USA.
  • Kruger GR; University of Nebraska-Lincoln, Department of Agronomy and Horticulture, North Platte, 69101, USA.
  • Meinke LJ; University of Nebraska-Lincoln, Department of Entomology, Lincoln, 68583, USA. lmeinke1@unl.edu.
Sci Rep ; 9(1): 6713, 2019 04 30.
Article en En | MEDLINE | ID: mdl-31040345
The western corn rootworm (Diabrotica virgifera virgifera LeConte) (WCR) is a major insect pest of corn (Zea mays L.) in the United States (US) and is highly adaptable to multiple management tactics. A low level of WCR field-evolved resistance to pyrethroid insecticides has been confirmed in the US western Corn Belt by laboratory dose-response bioassays. Further investigation has identified detoxification enzymes as a potential part of the WCR resistance mechanism, which could affect the performance of insecticides that are structurally related to pyrethroids, such as organophosphates. Thus, the responses of pyrethroid-resistant and -susceptible WCR populations to the commonly used pyrethroid bifenthrin and organophosphate dimethoate were compared in active ingredient bioassays. Results revealed a relatively low level of WCR resistance to both active ingredients. Therefore, a simulated aerial application bioassay technique was developed to evaluate how the estimated resistance levels would affect performance of registered rates of formulated products. The simulated aerial application technique confirmed pyrethroid resistance to formulated rates of bifenthrin whereas formulated dimethoate provided optimal control. Results suggest that the relationship between levels of resistance observed in dose-response bioassays and actual efficacy of formulated product needs to be further explored to understand the practical implications of resistance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Piretrinas / Escarabajos / Resistencia a los Insecticidas / Control de Plagas / Insecticidas Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: Sci Rep Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Piretrinas / Escarabajos / Resistencia a los Insecticidas / Control de Plagas / Insecticidas Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: Sci Rep Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido