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- W3093845670 endingPage "111302" @default.
- W3093845670 startingPage "111302" @default.
- W3093845670 abstract "In agroecosystems, plant-pest interactions are at the basis of complex food webs, which can be affected by both biotic and abiotic factors. In the present study, we evaluated the impact of the insecticide beta-cypermethrin on interspecific interactions between the specialist aphid Aphis glycines and the generalist aphid Aulacorthum solani on soybean. Aphis glycines showed higher fecundity than A. solani on soybean and the aphids caused unbalanced reduction in population growth on each other. A sublethal concentration of beta-cypermethrin (LC5 for A. glycines) stimulated the reproduction of A. glycines but it did not impact the fecundity of A. solani. However, the LC5 of beta-cypermethrin enhanced the interspecific inhibition of fecundity between the two aphid species. Moreover, the two species showed different spatial distribution on soybean seedlings. Aphis glycines mainly aggregated on the stem of soybean plant while A. solani colonized soybean leaves. The LC5 of beta-cypermethrin drove A. solani migrating from soybean leaves to stems independently of interspecific competition. Aphis glycines facilitated A. solani colonization on soybean plant through impacting host susceptibility, and vice versa. Nevertheless, such facilitated colonization-induced susceptibility could be modulated through exposure to the LC5 of beta-cypermethrin. These findings hinted that the pyrethroid insecticide beta-cypermethrin has the potential to mediate the interspecific competition between specialist and generalist aphids (at the sublethal concentration of LC5), and that it could influence aphid population growth and community structure in soybean crops. This knowledge could contribute to rationalize application of insecticides and to optimize Integrated Pest Management in soybean." @default.
- W3093845670 created "2020-10-29" @default.
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- W3093845670 date "2020-12-01" @default.
- W3093845670 modified "2023-10-10" @default.
- W3093845670 title "Sublethal effects of beta-cypermethrin modulate interspecific interactions between specialist and generalist aphid species on soybean" @default.
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- W3093845670 doi "https://doi.org/10.1016/j.ecoenv.2020.111302" @default.
- W3093845670 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33080437" @default.
- W3093845670 hasPublicationYear "2020" @default.
- W3093845670 type Work @default.