QU , Yanyan

In the agroecosystem, plant crops are the primary trophic producer that can be consumed/parasitized by a plethora of organisms, including viruses, bacteria, fungi, nematodes and many herbivore insects. On one hand, plants support these organisms as food resources; on the other hand, plants defend themselves against those consumers by employing...

Over the past 14 years, the chemical hybridization agent SQ-1 (CHA-SQ-1) has been widely used for inducing male sterility in wheat heterosis in China. However, any indirect effects of CHA-SQ-1 on high trophic level of food chains (e.g., wheat pests) have not been tested. Therefore, we addressed the question, under laboratory conditions, by...

Termites cause important economic losses worldwide and insecticides are largely used to control subterranean termites like Reticulitermes speratus Kolbe. However, few studies have documented the various effects that insecticides may have on termites, e.g., fumigation or colonial effects. Such knowledge would greatly help in optimizing termite...

The soybean aphid, Aphis glycines Matsumura, is a major pest in soybean crop. Current management of this pest relies mainly on insecticides applications, and the neonicotinoid imidacloprid has been proposed as an effective insecticide to control A. glycines in soybean field. Imidacloprid at lethal concentrations not only exerts acute toxicity...

Stimulatory effects (hormesis) of acetamiprid on demographical traits and vitellogenin gene expression of melon aphid, Aphis gossypii Glover, were examined. The longevity and fecundity of the parental aphids (F-0) were both reduced by a low lethal concentration of acetamiprid (LC15), while no effect was observed when exposed to a sublethal...

Introduction The tomato plant, Solanum lycopersicum L. (Solanaceae), is one of the most widely consumed vegetables in the world and plays an important role in human diet. Tomato cultivars are hosts for diverse types of pests, implying diverse chemical defence strategies. Glycoalkaloids are the main specialised metabolites produced by tomato...

In agmecosystems, 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...

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Beta-cypermethrin has long been recommended as an effective pesticide to control the soybean aphid, Aphis glycines Matsumura, a serious pest in soybean crops. Besides acute toxicity, it leads to changes in life history traits of A. glycines, notably its reproductive potential. This study has assessed the effects of five sublethal concentrations...

Insects are prominent, crucial, and exposed to many stressors in agroecosystems. • Mild chemical, heat, or nutrition stress can stimulate insects hormetically. • Insect herbivores, predators, parasitoids, detritivores and pollinators may be stimulated. • Multiple areas of insect-hormesisagroecology remain to be explored.

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