title: Effects of Sublethal Concentrations of Cyantraniliprole on the Development, Fecundity and Nutritional Physiology of the Black Cutworm Agrotis ipsilon (Lepidoptera: Noctuidae).
abstract: To better understand the sublethal effects of cyantraniliprole on the black cutworm Agrotis ipsilon (Lepidoptera: Noctuidae), several studies were carried out to investigate sublethal effects on development stages, population parameters, feeding indices and nutrient content of A. ipsilon. The result of a bioassay showed that cyantraniliprole had high toxicity against A. ipsilon fourth-instar larvae with an LC50 of 0.354 μg.g-1 using an artificial diet. Compared with controls, sublethal doses of cyantraniliprole at LC5, LC20 and LC40 levels prolonged larval and pupal duration and extended mean generation time and total preovipositional period. In addition, survival rate, reproductive value, intrinsic and finite rates of increase and net reproduction rate declined significantly. Meanwhile, cyantraniliprole had markedly antifeedant effects; decreased the relative growth rate (RGR), the relative consumption rate (RCR), the efficiency of conversion of ingested food (ECI), the efficiency of conversion of digested food (ECD); and increased the approximate digestibility (AD) significantly. This phenomenon contributed to the decrease of nutrient contents, including lipids, protein and carbohydrates, to the point that insufficient energy was available for normal growth. Therefore, sublethal concentrations of cyantraniliprole decreased growth speed and reduced population reproduction of A. ipsilon. This result provides information useful in integrated pest management (IPM) programs for A. ipsilon.
authors.affiliation: College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China.
authors.forename: Chunmei
authors.initials: C
authors.lastname: Xu
authors.affiliation: College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
authors.forename: Zhengqun
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China.
authors.forename: Kaidi
authors.initials: K
authors.lastname: Cui
authors.affiliation: College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China.
authors.forename: Yunhe
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China.
authors.forename: Jingkun
authors.initials: J
authors.lastname: Han
authors.affiliation: College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China.
authors.forename: Feng
authors.initials: F
authors.lastname: Liu
authors.affiliation: College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Mu
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D005298:Fertility / Q000187:drug effects*; D007306:Insecticides / Q000494:pharmacology*; D007814:Larva / Q000187:drug effects; D007915:Lepidoptera / Q000187:drug effects* / Q000254:growth & development / Q000502:physiology; D009747:Nutritional Physiological Phenomena / Q000187:drug effects*; D011720:Pyrazoles / Q000494:pharmacology*; D062367:ortho-Aminobenzoates / Q000494:pharmacology*
chemical_list: D007306:Insecticides; D011720:Pyrazoles; D062367:ortho-Aminobenzoates; C558219:cyantraniliprole