title: Lethal and sublethal effects of cyantraniliprole on Helicoverpa assulta (Lepidoptera: Noctuidae).
abstract: Cyantraniliprole is a novel anthranilic diamide insecticide registered for the control of many sucking and chewing insect pests including the oriental tobacco budworm, Helicoverpa assulta (Guenée), which is an important lepidopteran pest of tobacco in China. This study determined the lethal and sublethal effects of cyantraniliprole on a treated parental generation and on an untreated offspring generation of H. assulta. Cyantraniliprole was incorporated in the diet of 3rd-instar larvae of the parental generation. Cyantraniliprole was highly toxic to the parental generation: after a 72-h feeding period, the LC50was 0.176mg/L. Cyantraniliprole tended to increase the developmental time of parental larvae, and the LC30significantly reduced the pupation rate and the pupal weight. Cyantraniliprole also significantly decreased the intrinsic rate of increase (rm) and finite rate of increase (λ), and increased the doubling time (Dt). Treatment of the parental generation with the LC30decreased the pupal weight and adult fecundity, and increased adult deformity in the parental and offspring generations. Cyantraniliprole did not significantly affect the pupal period, the percentage of females, or adult longevity in either generation. These results suggest that both the lethal and sublethal effects of cyantraniliprole might suppress H. assulta population growth by reducing the insect's survival, development, and reproduction.
authors.affiliation: Forestry College, Henan University of Science and Technology, Luoyang 471003, Henan, China.
authors.forename: Junfeng
authors.initials: J
authors.lastname: Dong
authors.affiliation: Forestry College, Henan University of Science and Technology, Luoyang 471003, Henan, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Wang
authors.affiliation: Forestry College, Henan University of Science and Technology, Luoyang 471003, Henan, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China. Electronic address: wangshaoli@caas.cn.
authors.forename: Shaoli
authors.initials: S
authors.lastname: Wang
mesh_terms: D000818:Animals; D005260:Female; D005298:Fertility / Q000187:drug effects; D007306:Insecticides / Q000633:toxicity*; D007814:Larva / Q000187:drug effects / Q000254:growth & development; D007928:Lethal Dose 50; D008297:Male; D009036:Moths / Q000187:drug effects* / Q000254:growth & development / Q000502:physiology; D011720:Pyrazoles / Q000633:toxicity*; D062367:ortho-Aminobenzoates / Q000633:toxicity*
chemical_list: D007306:Insecticides; D011720:Pyrazoles; D062367:ortho-Aminobenzoates; C558219:cyantraniliprole
keywords: Cyantraniliprole; Helicoverpa assulta; Sublethal effect; Toxicity