Implementation of a Diagnostic-Concentration Bioassay for Detection of Susceptibility to Pyrethroids in Soybean Aphid (Hemiptera: Aphididae)
| Autor: | Daniela T. Pezzini, Krista Hamilton, James Menger, John Gavloski, Anitha Chirumamilla, Patrick B. Beauzay, Bruce D Potter, Robert L. Koch, Cole Dierks, Phillip A. Glogoza, Adam J. Varenhorst, Ian V MacRae, Erin W. Hodgson, Janet J. Knodel |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Canada Insecticides Bifenthrin Population Biology 01 natural sciences Midwestern United States Insecticide Resistance Toxicology chemistry.chemical_compound Pyrethrins Animals Bioassay Soybean aphid education education.field_of_study Ecology food and beverages Aphididae General Medicine biology.organism_classification Hemiptera Monitoring program 010602 entomology chemistry Aphids Insect Science Biological Assay Soybeans PEST analysis 010606 plant biology & botany |
| Zdroj: | Journal of Economic Entomology. 113:932-939 |
| ISSN: | 1938-291X 0022-0493 |
| Popis: | Soybean aphid, Aphis glycines Matsumura, remains the most economically damaging arthropod pest of soybean in the midwestern United States and southern Canada. Foliar applications of a limited number of insecticide modes of action have been the primary management tactic, and pyrethroid resistance was documented recently with full concentration–response leaf-dip and glass-vial bioassays. Full concentration–response bioassays can be cumbersome, and a more efficient assessment tool was needed. In this study, we implemented a diagnostic-concentration glass-vial bioassay using bifenthrin and λ-cyhalothrin. Bioassays were conducted with field-collected soybean aphid populations to assess the geographic extent and severity of resistance to pyrethroids. In 2017, 10 of 18 and 11 of 21 field populations tested with bifenthrin and λ-cyhalothrin, respectively, had mean proportion mortalities less than the susceptible laboratory population. In 2018, 17 of 23 and 13 of 23 field populations tested with bifenthrin and λ-cyhalothrin, respectively, had mean proportion mortalities less than the susceptible laboratory population. Populations collected after reported field failures of a pyrethroid insecticide generally had mean proportion mortalities less than the susceptible laboratory population. In both years, there was a strong correlation between chemistries, which suggests cross-resistance between these insecticides. The diagnostic-concentration glass-vial bioassays reported here will provide the foundation for an insecticide resistance monitoring program with the ability to determine practical levels and geographic extent of insecticide resistance. |
| Databáze: | OpenAIRE |
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