Neotropical Entomology (2001) 30, 139-143

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Daniel B. Fragoso, Pedro Jusselino-Filho, Raul N.C. Guedes and Reginaldo Proque (2001)
Seletividade de inseticidas a vespas predadoras de Leucoptera coffeella (Guér.-Mènev.) (Lepidoptera: Lyonetiidae)
[Selectivity of insecticides to predatory wasps of Leucoptera coffeella (Guér.-Mènev.) (Lepidoptera: Lyonetiidae)]
Neotropical Entomology 30 (1), 139-143
Abstract: Studies of relative toxicity of the organophosphate insecticides disulfoton, ethion, methyl-parathion e chlorpyrifos to the predatory wasps Brachygastra lecheguana Latreille, Polybia paulista Ihering and Protopolybia exigua Saussure and their prey, the coffee leaf-miner Leucoptera coffeella (Guérin-Mèneville), were carried out in laboratory. The concentrations which killed 99% of individuals of L. coffeella were: 0.08; 83.95; 0.43; 0.07 mg i.a/cm2 of disulfoton, ethion, methyl-parathion and chlorpyrifos, respectively. These concentrations were used to assess the selectivity of insecticides in impregnated paper filter assays. Methyl-parathion and chlorpyrifos were highly toxic to these wasp species, while disulfoton and ethion were selective in their favour.

Estudos de toxicidade relativa dos inseticidas organo-fosforados dissulfotom, etiom, paratiom-metílico e clorpirifós às vespas predadoras Brachygastra lecheguana Latreille, Polybia paulista Ihering e Protopolybia exigua Saussure e sua presa, o bicho-mineiro do cafeeiro Leucoptera coffeella (Guérin-Mèneville), foram realizados em condições de laboratório. As concentrações que mataram 99% dos indivíduos de L. coffeella foram: 0,08; 83,95; 0,43; 0,07 mg i.a/cm2 para dissulfotom, etiom, paratiom-metílico e clorpirifós, respectivamente. Essas concentrações foram usadas para avaliar a seletividade destes compostos em ensaio com papel de filtro impregnado com resíduo seco dos inseticidas. Paratiom-metílico e clorpirifós foram altamente tóxicos a essas espécies de vespas predadoras, enquanto disulfotom e etiom mostraram-se seletivos em favor delas.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
Full text of article
Database assignments for author(s): Raul Narciso C. Guedes

Research topic(s) for pests/diseases/weeds:
health/environmental effects of pesticides
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance to pesticides


Pest and/or beneficial records:

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


Perileucoptera coffeella Coffee (Coffea) Brazil (south)
Brachygastra lecheguana (predator) Perileucoptera coffeella Coffee (Coffea) Brazil (south)
Polybia paulista (predator) Perileucoptera coffeella Coffee (Coffea) Brazil (south)
Protopolybia exigua (predator) Perileucoptera coffeella Coffee (Coffea) Brazil (south)