Neotropical Entomology (2001) 30, 317-320

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Daniel R. Sosa-Gomez, Ivan C. Corso and Lauro Morales (2001)
Insecticide resistance to endosulfan, monocrotophos and metamidophos in the neotropical brown stink bug, Euschistus heros (F.)
Neotropical Entomology 30 (2), 317-320
Abstract: The Neotropical brown stink bug, Euschistus heros (F.), is usually controlled by organophosphate (OP) and cyclodiene (endosulfan) insecticides. Some unsuccessful control cases lead us to search for resistance to these insecticides in E. heros, the most common stink bug in the soybean growing regions of Paraná State, São Paulo State and Central Region of Brazil. Bioassays were performed with endosulfan, monocrotophos and metamidophos against adults. The most susceptible population was found in Londrina. Populations from Pedrinhas Paulista (SP) showed the highest resistance ratio (RR) to endosulfan (RR= 8.7) and metamidophos (RR=2.7); resistance to monocrotophos was detected on bugs from Centenário do Sul (PR) (RR= 3.1). Stink bugs collected from Toledo (PR), showed susceptibility to metamidophos comparable to those from Londrina.

As populações do percevejo marrom, Euschistus heros (F.), são normalmente controladas com inseticidas fosforados e ciclodienos (endossulfam). A ocorrência de casos de insucesso de E. heros, o percevejo mais comum nas regiões produtoras de soja do Paraná, São Paulo e da Região Central do Brasil, tem levado à investigação da resistência a esses inseticidas. Com essa finalidade foi avaliada a suscetibilidade de adultos provenientes de campos de soja, aos inseticidas endossulfam, monocrotofós e metamidofós. A população mais suscetível aos três inseticidas foi coletada em Londrina. A população mais resistente ao endossulfam (TR= 8,7) e ao metamidofós (TR= 2,7) foi proveniente de Pedrinhas Paulista (SP); para monocrotofós a população mais resistente foi coletada em Centenário do Sul (PR) (TR= 3,1). Percevejos E. heros provenientes de Toledo (PR) apresentaram níveis de suscetibilidade ao metamidofós comparáveis aos de Londrina (PR).
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Full text of article
Database assignments for author(s): Daniel R. Sosa-Gomez

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Euschistus heros Soybean (Glycine max) Brazil (south)
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