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Acute and sublethal toxicity of novaluron, a novel chitin synthesis inhibitor, to Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)

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dc.contributor.author Cutler, G. Christopher
dc.contributor.author Scott-Dupree, Cynthia D.
dc.contributor.author Tolman, Jeffery H.
dc.contributor.author Harris, C. Ronald
dc.date.accessioned 2011-04-13T23:02:31Z
dc.date.available 2011-04-13T23:02:31Z
dc.date.issued 2005
dc.identifier.uri http://hdl.handle.net/10214/2627
dc.description.abstract The acute and sublethal toxicities of novaluron, a novel chitin synthesis inhibitor, to a laboratory‐reared insecticide‐susceptible strain of Colorado potato beetle, Leptinotarsa decemlineata (Say), were determined. Novaluron exhibited excellent residual (120 h LC50 = 0.42 mg litre−1) and good direct contact (120 h LC50 = 27 mg litre−1) activity against second‐instar larvae (L2). Hatch of eggs exposed by direct contact to novaluron solutions ≥100 mg litre−1 was significantly reduced, as was the ability of emerged first‐instar larvae to moult. L2 from eggs exposed to ≥100 mg litre−1 novaluron weighed significantly less (P < 0.0001) than those from untreated eggs. However, L2 from eggs treated with 1 mg litre−1 novaluron weighed significantly more (P ≤ 0.05) than those from untreated eggs, suggesting novaluron can have a hormetic effect on L decemlineata larval development. Leptinotarsa decemlineata mating pairs fed foliage treated with novaluron at 25 or 75 g AI ha−1 produced approximately 25% fewer egg masses and eggs per mass. Hatch of eggs on treated foliage was almost completely suppressed, and longevity of male beetles was reduced by approximately 50% when fed foliage treated with novaluron at 75 g AI ha−1.
dc.language.iso en en_US
dc.publisher Pest Management Science en_US
dc.subject novaluron en_US
dc.subject Colorado potato beetle en_US
dc.subject Leptinotarsa decemlineata en_US
dc.subject sublethal toxicity en_US
dc.subject ovicidal en_US
dc.subject hormesis en_US
dc.title Acute and sublethal toxicity of novaluron, a novel chitin synthesis inhibitor, to Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) en_US
dc.type Article en_US
dc.contributor.affiliation School of Environmental Sciences
dc.rights.license All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dcterms.relation Cutler, G.C., Scott-Dupree, C.D., Tolman, J.H., and Harris, C. R. "Acute and sublethal toxicity of novaluron, a novel chitin synthesis inhibitor, to Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)." Pest Management Science 61.11 (2005): 1060-1068


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