Intra- and Interspecific Variation in the Susceptibility to Insecticides of Stink Bugs (Hemiptera: Pentatomidae) That Attack Soybean and Maize in Southern Brazil.

Autor:	Steinhaus EA; Department of Plant Protection, Universidade Regional Integrada do Alto Uruguai e Missões (URI), Universidade das missões avenue 464, Santo Ângelo, Rio Grande do Sul 98802-470, Brazil., Warpechowski LF; Department of Plant Protection, Universidade Regional Integrada do Alto Uruguai e Missões (URI), Universidade das missões avenue 464, Santo Ângelo, Rio Grande do Sul 98802-470, Brazil., Braga LE; Department of Plant Protection, Universidade Regional Integrada do Alto Uruguai e Missões (URI), Universidade das missões avenue 464, Santo Ângelo, Rio Grande do Sul 98802-470, Brazil., Morin M; Department of Plant Protection, Universidade Regional Integrada do Alto Uruguai e Missões (URI), Universidade das missões avenue 464, Santo Ângelo, Rio Grande do Sul 98802-470, Brazil., Tenório C; Department of Plant Protection, Universidade Regional Integrada do Alto Uruguai e Missões (URI), Universidade das missões avenue 464, Santo Ângelo, Rio Grande do Sul 98802-470, Brazil., Boff JS; Department of Plant Protection, Universidade Federal de Santa Maria, Roraima avenue 1000, Santa Maria, Rio Grande do Sul 97105-900, Brazil., Bernardi O; Department of Plant Protection, Universidade Federal de Santa Maria, Roraima avenue 1000, Santa Maria, Rio Grande do Sul 97105-900, Brazil., Farias JR; Department of Plant Protection, Universidade Regional Integrada do Alto Uruguai e Missões (URI), Universidade das missões avenue 464, Santo Ângelo, Rio Grande do Sul 98802-470, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of economic entomology [J Econ Entomol] 2022 Apr 13; Vol. 115 (2), pp. 631-636.
DOI:	10.1093/jee/toac013
Abstrakt:	This study evaluated intra- and interspecific variation regarding the susceptibility to insecticides of key pentatomid pests of soybean (Glycine max L.) and maize (Zea mays L.) crops in Brazil. To perform bioassays, populations of Euschistus heros (F.), Diceraeus (=Dichelops) furcatus (F.), Nezara viridula (L.), and Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae) were collected in soybean fields in Southern Brazil during the 2020/2021 crop season. Then, stink bugs were exposed to doses of commercial insecticides commonly applied for its control in dip-test bioassays using fresh green bean pods. In general, all stink bug species and populations studied were susceptible to acephate, acetamiprid + bifenthrin, imidacloprid + bifenthrin, and ethiprole, with mortality rates > 80%. Most populations of E. heros and D. furcatus, considered the main stink bugs that attack soybean and maize, respectively, presented low or intermediate susceptibility to acetamiprid + α-cypermethrin, ζ-cypermethrin + bifenthrin, dinotefuran + λ-cyhalothrin, and bifenthrin + carbosulfan. Except for bifenthrin + carbosulfan (mortality < 57%), secondary stink bugs species that attack soybean (N. viridula and P. guildinii) showed pronounced susceptibility to all insecticides tested, with mortality rates > 70%. In summary, the populations of E. heros and D. furcatus showed diminished susceptibility to various insecticides formulated with the mixture of neonicotinoids + pyrethroids, whereas N. viridula and P. guildinii were most susceptible to the insecticides evaluated. The implications of these findings to integrated and resistance management programs are discussed. (© The Author(s) 2022. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Databáze:	MEDLINE
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