Journal ArticleDOI
High levels of resistance to chlorantraniliprole evolved in field populations of Plutella xylostella.
Xingliang Wang,Yidong Wu +1 more
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It is shown that high levels of resistance to chlorantraniliprole had evolved in field populations from Guangdong Province of southern China, indicating intensive use and misuse of chlorine may be responsible for the rapid evolution of high-level resistance in P. xylostella in this region.Abstract:
Chlorantraniliprole is the first commercial insecticide from a new class of chemistry, the anthranilic diamides. Chlorantraniliprole provides an effective alternative insecticide for control of Plutella xylostella (L.) populations resistant to other insecticides. Baseline susceptibility to chlorantraniliprole for P. xylostella was surveyed previously from 16 geographical populations sampled from China during 2008-2009, and the median lethal concentrations (LC50s) varied among populations from 1.8- to 8.9-fold higher than the LC50 of a susceptible strain (Roth). In the present work, 20 field populations of P. xylostella sampled in 2010-2011 from China were tested with laboratory bioassays to determine if resistance to chlorantraniliprole had evolved in the field. The LC50s of the 14 populations from northern China ranged from 1.7- to 5.4-fold compared with the LC50 of Roth, which indicates these populations remain reasonably susceptible to chlorantraniliprole. However, the LC50s of the six populations from southern China (Guangdong Province) were 2.6-, 12-, 18-, 81-, 140-, and 2,000-fold higher than the LC50 of Roth. The results showed that high levels of resistance to chlorantraniliprole had evolved in field populations from Guangdong Province of southern China. Intensive use and misuse of chlorantraniliprole may be responsible for the rapid evolution of high-level resistance in P. xylostella in this region. The implementation of resistance monitoring plans and resistance management strategies is urgently needed in China to preserve susceptibility to chlorantraniliprole in P. xylostella.read more
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Journal ArticleDOI
IRAC: Mode of action classification and insecticide resistance management
Thomas C. Sparks,Ralf Nauen +1 more
TL;DR: Diversity is the spice of resistance management by chemical means and thus it provides an approach to IRM providing a straightforward means to identify potential rotation/alternation options.
Journal ArticleDOI
Diamondback Moth Ecology and Management: Problems, Progress, and Prospects
TL;DR: Improved ecological understanding and the availability of a series of highly effective selective insecticides throughout the 1990s provided the basis for sustainable and economically viable integrated pest management (IPM) approaches, however, repeated reversion to scheduled insecticide applications has resulted in resistance to these and more recently introduced compounds and the breakdown of IPM programs.
Journal ArticleDOI
Resistance to diamide insecticides in diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae) is associated with a mutation in the membrane-spanning domain of the ryanodine receptor.
Bartek J. Troczka,Christoph T. Zimmer,Jan Elias,Corinna Schorn,Chris Bass,T.G. Emyr Davies,Linda M. Field,Martin S. Williamson,Russell Slater,Ralf Nauen +9 more
TL;DR: A region of the gene encoding the proposed diamide binding site of the RyR from P. xylostella strongly suggests a causal association with diamide resistance, and designed a pyrosequencing-based diagnostic assay for resistance monitoring purposes that can be used to detect the G4946E mutation in field-collected samples of diamondback moth.
Journal ArticleDOI
First report of Tuta absoluta resistance to diamide insecticides
Emmanouil Roditakis,Emmanouil Vasakis,Maria Grispou,Marianna Stavrakaki,Ralf Nauen,Magali Gravouil,Andrea Bassi +6 more
TL;DR: Cases of resistance development to diamide insecticides in T. absoluta are reported for the first time and underline the importance of committing to the resistance management strategies for diamide Insecticides.
Journal ArticleDOI
Insecticide resistance in the tomato pinworm Tuta absoluta: patterns, spread, mechanisms, management and outlook
Raul Narciso C. Guedes,Emmanouil Roditakis,Mateus R. Campos,Khalid Haddi,Pablo Bielza,Herbert A.A. Siqueira,Anastasia Tsagkarakou,John Vontas,John Vontas,Ralf Nauen +9 more
TL;DR: The implementation of integrated control programmes and appropriate resistance management strategies as part of such programs is of utmost importance to keep tomato pinworm infestations under economic damage thresholds, thus guaranteeing sustainable yields.
References
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Journal ArticleDOI
Biology, Ecology, and Management of the Diamondback Moth
N. S. Talekar,Anthony M. Shelton +1 more
TL;DR: Lack of parasitoids in a particular area may have occurred because the diamondback moth is better able than its natural-enemy complex to become established in newly planted cmcifers.
Journal ArticleDOI
Field Development of Resistance to Bacillus thuringiensis in Diamondback Moth (Lepidoptera: Plutellidae)
TL;DR: The results suggest that the potential for resistance development in pest populations is an important consideration for deployment of B. thuringiensis toxin genes in genetically-engineered crop plants and use in related tactics.
Journal ArticleDOI
Anthranilic diamides: A new class of insecticides with a novel mode of action, ryanodine receptor activation
Daniel Cordova,Eric A. Benner,Matthew Sacher,James J. Rauh,Jeffrey S. Sopa,George Philip Lahm,Thomas Paul Selby,Thomas Martin Stevenson,Lindsey Flexner,Steven Gutteridge,Daniel F. Rhoades,Lihong Wu,Rejane M. Smith,Yong Tao +13 more
TL;DR: Calcium mobilization studies using mammalian cell lines indicate anthranilic diamides exhibit >500-fold differential selectivity toward insect, over mammalian, receptors, and offer a novel pharmacological tool for calcium signaling research in addition to a unique alternative to existing pest-management strategies.
Journal ArticleDOI
New and selective ryanodine receptor activators for insect control.
TL;DR: Diamide insecticides have emerged as one of the most promising new classes of insecticide chemistry owing to their excellent insecticidal efficacy and high margins of mammalian safety.
Journal ArticleDOI
Rynaxypyr™: A new insecticidal anthranilic diamide that acts as a potent and selective ryanodine receptor activator
George Philip Lahm,Thomas Martin Stevenson,Thomas Paul Selby,John Herbert Freudenberger,Daniel Cordova,Lindsey Flexner,Cheryl A. Bellin,Christine M. Dubas,Ben K. Smith,Kenneth A. Hughes,J. Gary Hollingshaus,Christopher E. Clark,Eric A. Benner +12 more
TL;DR: Rynaxypyr is a highly potent and selective activator of insect ryanodine receptors with exceptional activity on a broad range of Lepidoptera.