Journal of Pest Science (2019) 92, 1447-1456

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Marianne A. Soares, Luis C. Passos, Mateus R. Campos, Lara J. Collares, Nicolas Desneux and Geraldo A. Carvalho (2019)
Side effects of insecticides commonly used against Tuta absoluta on the predator Macrolophus basicornis
Journal of Pest Science 92 (4), 1447-1456
Abstract: Macrolophus basicornis (Stal) (Hemiptera: Miridae) is a promising biological control agent against tomato pests, mainly the South American tomato pinworm Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae). Nevertheless, the amount of pesticides used in tomato crops could compromise the effectiveness of M. basicornis in pest control. Thus, the present research aims to evaluate the lethal and sublethal effects of five insecticides (spinetoram, chlorantraniliprole + abamectin, triflumuron, tebufenozide, and abamectin) commonly used in tomato crops on M. basicornis. Third instar nymphs were exposed to dry residues of insecticides on tomato seedlings, and adults were directly sprayed using a Potter precision tower. Abamectin caused the highest mortality rate (79.98%) of M. basicornis nymphs. Females exposed to spinetoram during the nymphal stage showed a reduction in tibia length. Except for spinetoram, all other insecticides significantly influenced adult longevity. All insecticide treatments caused a reduction in female offspring. However, the growth of males and females (F1 generation) issued from adults treated did not differ significantly from the control. In the predator flight bioassay, males in the first evaluation showed a reduction in flight activity following exposure to chlorantraniliprole + abamectin and to tebufenozide. Overall, all insecticides tested caused negative effects on M. basicornis.
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Full text of article
Database assignments for author(s): Nicolas Desneux, Geraldo Andrade Carvalho

Research topic(s) for pests/diseases/weeds:
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.


Phthorimaea absoluta
Macrolophus basicornis (predator) Phthorimaea absoluta Tomato (Solanum lycopersicum) Brazil (south)
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