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Age-specific expression of a P450 monooxygenase (CYP6CM1) correlates with neonicotinoid resistance in Bemisia tabaci
Jones, Christopher M.; Daniels, Miriam; Andrews, Melanie; Slater, Russell; Lind, Robert J.; Gorman, Kevin; Williamson, Martin S.; Denholm, Ian (2011-11)The whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae), is an invasive insect pest of agriculture and horticulture worldwide. The neonicotinoid insecticides, which target nicotinic acetylcholine receptors in post-synaptic ... -
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 ... -
Aquatic bryophytes as monitors in contaminated habitats.
Burton, Agneta (Tata McGraw Hill, India, 1995) -
Behavioural Interactions and Microhabitat use of stream-dwelling sticklebacks Glasterosteus aculatens and Pungitius pungitius in the laboratory and field
Copp, Gordon; Edmonds-Brown, Veronica; Cottey, Rachael (1998) -
Biological Evaluation of spiromesifen against Bemisia tabaci and an assessment of resistance risks
Guthrie, F; Denholm, Ian; Devine, GJ; Nauen, R (BCPC, 2003-11-10) -
Biomonitoring Methods to Assess the Impact of Metals on Mosses
Anja, H. T.; Burton, Agneta; Higgs, David Edward Barry (2003) -
Causes and impacts of serious foul water contamination : Pymmes’ Brook, north London
Edmonds-Brown, Veronica; Faulkner, Hazel (1995-03)The downstream deterioration in macroinvertebrate scores and in levels of key determinands at both low and high flow on Pymmes's Brook over a period of 7 years can be related to the pattern of SSO entry and SSO catchment ... -
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 ... -
Characterisation of Neonicotinoid and Pymetrozine Resistance in Strains of Bemisia tabaci (Hemiptera: Aleyrodidae) from China
Rao, Qiong; Xu, Yong-hua; Luo, Chen; Zhang, Hong-yu; Jones, Christopher M.; Devine, Greg J.; Gorman, Kevin; Denholm, Ian (2012-02)Four strains of the Q biotype and one of the B biotype of the whitefly Bemisia tabaci collected from China were characterised for resistance to four neonicotinoid insecticides and pymetrozine. Q biotype strains showed ... -
Characterisation of neonicotinoid resistance in Bemisia tabaci from Spain
Gorman, K; Wren, J; Devine, G; Denholm, Ian (BCPC, 2003) -
Characterising wide spatial variation in population size structure of a keystone African savanna tree
Helm, Chantal; Witkowski, Edward (2012)Elephant impact on trees is of conservation concern in African savannas, but it’s effect on population size structure of heavily utilised species has received little attention. Although studies have shown that the population ... -
Chlorpyrifos ethyl-oxon sensitive and insensitive acetylcholinesterase variants of greenhouse whitefly, Trialeurodes vaporariorum (Westw.) (Hemiptera: Aleyrodidae) from Turkey
Erdogan, Cem; Velioglu, A. S.; Gurkan, M. Oktay; Denholm, Ian; Moores, Graham D. (2012-11)Resistance to the organophosphate chlorpyrifos ethyl was investigated in greenhouse populations of Trialeurodes vaporariorum from Turkey using both bioassay and biochemical studies. These populations were collected from ... -
Comment on: “Lévy walks evolve through interaction between movement and environmental complexity.”
Jansen, Vincent; Mashanova, Alla; Petrovskii, Sergei (2012-02-24)de Jager et al. (Reports, 24 June 2011, p. 1551) concluded that mussels Lévy walk. We confronted a larger model set with these data and found that mussels do not Lévy walk: Their movement is best described by a composite ... -
A comparison of methodologies for the staining and quantification of intracellular components of Arbuscular Mychorrizal (AM) fungi in the root cortex of two varieties of winter wheat
Wilkes, Thomas; Warner, Douglas; Edmonds-Brown, Veronica; Davies, Keith; Denholm, Ian (2019-11-21)Arbuscular Mychorrizal (AM) fungi are one of the most common fungal organisms to exist in symbiosis with terrestrial plants facilitating the growth and maintenance of arable crops. Wheat has been studied extensively for ... -
Composition and characteristics of a transitional flora at Rough Hills grasslands, Bayfordbury
Mashanova, Alla; Scholes, Bronwyn; Denholm, Ian (2021-10-01) -
Conservation biological control at the landscape level: measuring and modelling
Petit, S.; Lavigne, C; Ferguson, A; Tixier, P; Bohan, D; Otto, S.; Alomar, O; Vers, A; Bocci, G; Eggenschwiter, L; Moonen, C; Golla, B; Denholm, Ian (IOBC/WPRS, 2010)The incorporation of landscape management into Conservation Biological Control (CBC) strategies is a priority area of research but is hindered by a lack of harmonisation of the means to describe and measure the effectiveness ... -
Continuing decline of a keystone tree species in the Kruger National Park, South Africa
Helm, Chantal; Witkowski, Edward (2013-06)Sclerocarya birrea subsp. caffra (marula), a keystone large tree species in southern Africa and heavily utilized by people and herbivores, is declining at an unprecedented rate in the Kruger National Park (KNP), South ... -
Cross-resistance relationships between neonicotinoids and pymetrozine in Bemisia tabaci (Hemiptera: Aleyrodidae)
Gorman, Kevin; Slater, Russell; Blande, James D.; Clarke, Alison; Wren, Jodie; McCaffery, Alan; Denholm, Ian (2010-11)BACKGROUND: Although cross-resistance between compounds in the same insecticide group is a frequently observed phenomenon, cross-resistance between groups that differ in structural and functional characteristics can be ... -
Cross-resistance relationships of the sulfoximine insecticide sulfoxaflor with neonicotinoids and other insecticides in the whiteflies Bemisia tabaci and Trialerurodes vaporariorum
Longhurst, C.; Babcock, Jonathan M.; Denholm, Ian; Gorman, Kevin; Thomas, James D.; Sparks, Thomas C. (2013-07)Insecticides are important tools for managing damaging insect pests. Compounds that are effective against pests such as the whiteflies Bemisia tabaci and Trialeurodes vaporariorum, which show resistance to a range of ... -
Discovery and Characterization of Sulfoxaflor, a Novel Insecticide Targeting Sap-Feeding Pests
Zhu, Yuanming; Loso, Michael R.; Watson, Gerald B.; Sparks, Thomas C.; Rogers, Richard B.; Huang, Jim X.; Gerwick, B. Clifford; Babcock, Jonathan M.; Kelley, Donald; Hegde, Vidyadhar B.; Nugent, Benjamin M.; Renga, James M.; Denholm, Ian; Gorman, Kevin; DeBoer, Gerrit J.; Hasler, James; Meade, Thomas; Thomas, James D. (2011-04-13)The discovery of sulfoxaflor [N-[methyloxido[1-[6-(trifluoromethyl)-3-pyridinyl]ethyl]-lambda(4)-sulfanylidene] cyanamide] resulted from an investigation of the sulfoximine functional group as a novel bioactive scaffold ...