AI Article Synopsis
- * The study showed that sublethal doses of sulfoxaflor improve the reproduction rates of A. gossypii in the first two generations but have no significant effect in later generations.
- * The combination of sulfoxaflor followed by deltamethrin enhances reproductive rates even more than either insecticide alone, suggesting important implications for optimizing pest management strategies.
Article Abstract
Aphis gossypii Glover is one of the most agriculturally important phloem-feeding economic pests, causing tremendous loss in crop yield annually. The hormesis is an important cause of A. gossypii resistance formation, population resurgence, and re-outbreak. However, whether the hormesises induced by different insecticides interact mutually remain largely unclear. In the study, four-generation A. gossypii experiment found that the 24-h sublethal-dose (LC) sulfoxaflor treatment on G0 significantly increased the net reproductive rate (R0) and fecundity of G1 and G2 generation A. gossypii, but it did not significantly affect the fecundity of G3 and G4 individuals. Transcriptomic analyses revealed that the insecticide-induced significant up-regulation of pathways ribosome, energy metabolism, and the DNA replication and reparation might be responsible for the enhancement of fecundity in G1 and G2 A. gossypii. Notably, G0 exposure to LC sulfoxaflor followed by G1 exposure to LC deltamethrin resulted in a stronger reproductive stimulation than sulfoxaflor or deltamethrin exposure alone. Our findings provide valuable reference for optimizing sulfoxaflor application in integrated pest management strategies.
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| http://dx.doi.org/10.1016/j.pestbp.2024.106061 | DOI Listing |
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Hormetic dose response induced by sublethal-dose sulfoxaflor leads to reproductive stimulation of Aphis gossypii.
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