Insecticide resistance to endosulfan, monocrotophos and metamidophos in the neotropical brown stink bug, Euschistus heros (F.)

Abstract

Neotropical Entomology 30(2): 317-320 (2001) Resistência do Percevejo Marrom Euschistus heros (F.) 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.

Sequential sampling of Euschistus heros (Heteroptera: Pentatomidae) in soybean

“…However, populations of this pentatomid are difficult to manage using organophosphates (methamidophos, acephate, chlorpyrifos, and monocrotophos) or cyclodiene endosulfan (Sosa-Gómez et al, 2009). Consequently, control strategies are based on spraying using a limited group of insecticides (Sosa-Gómez et al, 2001).…”

Composition and biological activity of essential oils from Labiatae against Nezara viridula (Hemiptera: Pentatomidae) soybean pest

“…In the last few years, failures have been detected with these treatments in some productive areas 7. Traditionally, in these cases the solution has involved an increase in the doses used; and it is known that the massive use of insecticides of this kind not only increases production costs but may also generate pentatomid‐resistant populations by selective pressure 7–9. Besides, as a result of increasing restrictions on the use of endosulfan in some countries, the most commonly used insecticide in soybean crops is the synthetic pyrethroid deltamethrin, which is harmful to natural enemies, making it incompatible with integrated pest management (IPM) strategies for soybean or pulse crops 10.…”

Neotropical brown stink bug (Euschistus heros) resistance to methamidophos in Paraná, Brazil

“…In 1999, Sosa-Gómez et al (2001) observed a slight reduction of susceptibility to OPs in populations at Pedrinhas Paulista, São Paulo, by using vial bioassays. More recently, control failures with OPs, such as methamidophos, have become frequent in Paraná State, Brazil, leading growers to increase doses by 2 to 2.4 times the recommended doses.…”

“…In the year 2000, Sosa-Gómez et al (2001) detected diminished susceptibility to methamidophos in neotropical brown stink bugs collected in Pedrinhas Paulista, São Paulo.…”