Assessment of Sublethal and Transgenerational Effects of Pirimicarb on the Wheat Aphids Rhopalosiphum padi and Sitobion avenae

摘要: The wheat aphids, Rhopalosiphum padi (Linnaeus) and Sitobion avenae (Fabricius), are key pests on crops worldwide. Management practices rely primarily insecticides. pirimicarb (carbamate) is used extensively as an effective insecticide to control these two aphids. In addition the mortality caused by pirimicarb, various sublethal effects may occur in aphids when exposed low lethal or doses. Understanding general effect of could help increasing rational use this insecticide. Under laboratory conditions, we assessed a concentration (LC25) biological traits acetylcholinesterase (AChE) activity R. S. avenae. Both direct transgenerational effects, i.e. parent F1 generations were assessed, respectively. We found that responded differentially LC25 pirimicarb. generation showed 39% decrease fecundity multiple observed generation; overall juvenile development, reproductive period, adult longevity lifespan longer than those group. By contrast, almost no both generations; only pre-reproductive duration was reduced generations. Demographic parameter estimates (e.g. rm) similar trend, significant negative population growth However, AChE decreased treated demonstrated aphid species; it hinted at importance considering (including hormesis) for optimizing Integrated Pest (IPM)