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Browsing by Author "Nauen, Ralf"
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Age-specific expression of resistance to a neonicotinoid insecticide in the whitefly Bemisia tabaci
Nauen, Ralf; Bielza, Pablo; Denholm, Ian; Gorman, Kevin (2008-09-29)Neonicotinoid insecticides retain a crucial role within many chemical and integrated control strategies for the tobacco whitefly, Bemisia tabaci Gennadius, in spite of the establishment of potent and widespread resistance ... -
Characterisation of imidacloprid resistance mechanisms in the brown planthopper, Nilaparvata lugens Stal (Hemiptera: Delphacidae)
Puinean, Alin M.; Denholm, Ian; Millar, Neil S.; Nauen, Ralf; Williamson, Martin S. (2010-06)Effective control of the brown planthopper, Nilaparvata lugens Stal, across rice-growing regions of Asia has been seriously compromised over the last 2 years by the appearance of widespread resistance to the neonicotinoid ... -
The evolution of insecticide resistance in the peach-potato aphid, Myzus persicae
Bass, Chris; Puinean, Alin M.; Zimmer, C T; Denholm, Ian; Field, LM; Foster, SP; Gutbrod, O; Nauen, Ralf; Slater, R; Williamson, MS (2014-08-31)The peach potato aphid, Myzus persicae is a globally distributed crop pest with a host range of over 400 species including many economically important crop plants. The intensive use of insecticides to control this species ... -
Global patterns in genomic diversity underpinning the evolution of insecticide resistance in the aphid crop pest Myzus persicae
Singh, Kumar Saurabh; Cordeiro, Erick M. G.; Troczka, Bartlomiej J.; Pym, Adam; Mackisack, Joanna; Mathers, Thomas C.; Duarte, Ana; Legeai, Fabrice; Robin, Stéphanie; Bielza, Pablo; Burrack, Hannah J.; Charaabi, Kamel; Denholm, Ian; Figueroa, Christian C.; ffrench-Constant, Richard H.; Jander, Georg; Margaritopoulos, John T.; Mazzoni, Emanuele; Nauen, Ralf; Ramírez, Claudio C.; Ren, Guangwei; Stepanyan, Ilona; Umina, Paul A.; Voronova, Nina V.; Vontas, John; Williamson, Martin S.; Wilson, Alex C. C.; Xi-Wu, Gao; Youn, Young-Nam; Zimmer, Christoph T.; Simon, Jean-Christophe; Hayward, Alex; Bass, Chris (2021-07-07)Abstract: The aphid Myzus persicae is a destructive agricultural pest that displays an exceptional ability to develop resistance to both natural and synthetic insecticides. To investigate the evolution of resistance in ... -
The global status of insect resistance to neonicotinoid insecticides
Bass, Chris; Denholm, Ian; Williamson, MS; Nauen, Ralf (2015-06-30)The first neonicotinoid insecticide, imidacloprid, was launched in 1991. Today this class of insecticides comprises at least seven major compounds with a market share of more than 25% of total global insecticide sales. ... -
Incidence and characterisation of resistance to neonicotinoid insecticides and pymetrozine in the greenhouse whitefly, Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae)
Karatolos, Nikos; Denholm, Ian; Williamson, Martin; Nauen, Ralf; Gorman, Kevin (2010-12)BACKGROUND: Trialeurodes vaporariorum (Westwood), also known as the greenhouse whitefly, is a serious pest of protected vegetable and ornamental crops inmost temperate regions of the world. Neonicotinoid insecticides are ... -
Mitochondrial heteroplasmy and the evolution of insecticide resistance : Non-Mendelian inheritance in action
Van Leeuwen, Thomas; Vanholme, Bartel; Van Pottelberge, Steven; Van Nieuwenhuyse, Pieter; Nauen, Ralf; Tirry, Luc; Denholm, Ian (2008-04-22)Genes encoded by mitochondrial DNA (mtDNA) exist in large numbers per cell but can be selected very rapidly as a result of unequal partitioning of mtDNA between germ cells during embryogenesis. However, empirical studies ... -
Neonicotinoid resistance in rice brown planthopper, Nilaparvata lugens
Gorman, Kevin; Liu, Zewen; Denholm, Ian; Brueggen, Kai-Uwe; Nauen, Ralf (2008-11)BACKGROUND: Rice brown planthopper, Nilaparvata lugens Stal, is a primary insect pest of cultivated rice, and effective control is essential for economical crop production. Resistance to neonicotinoid insecticides, in ... -
News from the front line : reports from the Global Workshop on the Stewardship of Neonicotinoid Insecticides, Honolulu, Hawaii, 5-6 June 2008
Nauen, Ralf; Denholm, Ian; Dennehy, Tim; Nichols, Robert (2008-11) -
Over-expression of cytochrome P450 CYP6CM1 is associated with high resistance to imidacloprid in the B and Q biotypes of Bemisia tabaci (Hemiptera : Aleyrodidae)
Karunker, Iris; Benting, Juergen; Lueke, Bettina; Ponge, Tanja; Nauen, Ralf; Roditakis, Emmanouil; Vontas, John; Gorman, Kevin; Denholm, Ian; Morin, Shai (2008-06)The two most damaging biotypes of Bemisia tabaci, B and Q, have both evolved strong resistance to the neonicotinoid insecticide imidacloprid. The major mechanism in all samples investigated so far appeared to be enhanced ... -
Resistance to spiromesifen in Trialeurodes vaporariorum is associated with a single amino acid replacement in its target enzyme acetyl-coenzyme A carboxylase
Karatolos, Nikos; Williamson, M. S.; Denholm, Ian; Gorman, Kevin; Ffrench-Constant, R.; Nauen, Ralf (2012-06)Spiromesifen is a novel insecticide and is classed as a tetronic acid derivative. It targets the insects' acetyl-coenzyme A carboxylase (ACCase) enzyme, causing a reduction in lipid biosynthesis. At the time of this ...