Search Results - "Wadhams, Lester J"

Aphid alarm pheromone produced by transgenic plants affects aphid and parasitoid behavior by Beale, M.H, Birkett, M.A, Bruce, T.J.A, Chamberlain, K, Field, L.M, Huttly, A.K, Martin, J.L, Parker, R, Phillips, A.L, Pickett, J.A

“…The alarm pheromone for many species of aphids, which causes dispersion in response to attack by predators or parasitoids, consists of the sesquiterpene…”
Get full text

Antiectoparasitic activity of the gum resin, gum haggar, from the East African plant, Commiphora holtziana by Birkett, Michael A., Abassi, Sate Al, Kröber, Thomas, Chamberlain, Keith, Hooper, Antony M., Guerin, Patrick M., Pettersson, Jan, Pickett, John A., Slade, Robin, Wadhams, Lester J.

“…The repellent activity of gum haggar, a resin produced by Commiphora holtziana (Burseraceae), was assessed using the cattle tick, Boophilus microplus and the…”
Get full text

Response of economically important aphids to components of Hemizygia petiolata essential oil by Bruce, T.J.A, Birkett, M.A, Blande, J, Hooper, A.M, Martin, J.L, Khambay, B, Prosser, I, Smart, L.E, Wadhams, L.J

“…The essential oil of Hemizygia petiolata Ashby (Lamiaceae) contains high levels (>70%) of the sesquiterpene (E)-beta-farnesene, the alarm pheromone for many…”
Get full text

Combined control of Striga hermonthica and stemborers by maize– Desmodium spp. intercrops by Khan, Zeyaur R., Pickett, John A., Wadhams, Lester J., Hassanali, Ahmed, Midega, Charles A.O.

“…The African witchweed ( Striga spp.) and lepidopteran stemborers are two major biotic constraints to the efficient production of maize in sub-Saharan Africa…”
Get full text

Evaluation of Napier grass (Pennisetum purpureum) varieties for use as trap plants for the management of African stemborer (Busseola fusca) in a push-pull strategy by Khan, Zeyaur R, Midega, Charles A.O, Wadhams, Lester J, Pickett, John A, Mumuni, Abdulai

“…We evaluated eight Napier grass [Pennisetum purpureum Schumach (Poaceae)] varieties, used in various parts of eastern Africa as fodder, for their potential…”
Get full text

Exploiting chemical ecology and species diversity: stem borer and striga control for maize and sorghum in Africa by Khan, Zeyaur R, Pickett, John A, Berg, Johnnie van den, Wadhams, Lester J, Woodcock, Christine M

“…Stem borers, comprising the larvae of a group of lepidopterous insects, and parasitic witchweeds, particularly Striga hermonthica and S asiatica, cause major…”
Get full text

Antennal electrophysiological responses of three parasitic wasps to caterpillar-induced volatiles from maize (Zea mays mays), cotton (Gossypium herbaceum), and cowpea (Vigna unguiculata) by Gouinguene, S, Pickett, J.A, Wadhams, L.J, Birkett, M.A, Turlings, T.C.J

“…Many parasitic wasps are attracted to volatiles that are released by plants when attacked by potential hosts. The attractiveness of these semiochemicals from…”
Get full text

Assessment of the potential of Napier grass (Pennisetum purpureum) varieties as trap plants for management of Chilo partellus by Khan, Zeyaur R, Midega, Charles A.O, Hutter, Nicholas J, Wilkins, Richard M, Wadhams, Lester J

“…Ten Napier grass [Pennisetum purpureum Schumach (Poaceae)] varieties, used in various parts of Kenya as animal fodder, were tested for their potential role as…”
Get full text

cis-Jasmone treatment induces resistance in wheat plants against the grain aphid, Sitobion avenae (Fabricius) (Homoptera: Aphididae) by Bruce, Toby J.A, Martin, Janet L, Pickett, John A, Pye, Barry J, Smart, Lesley E, Wadhams, Lester J

“…cis-Jasmone is a plant volatile known to have roles as an insect semiochemical and in inducing plant defence. It was evaluated in laboratory and field trials…”
Get full text

Insect host location: a volatile situation by Bruce, Toby J.A., Wadhams, Lester J., Woodcock, Christine M.

“…Locating a host plant is crucial for a phytophagous (herbivorous) insect to fulfill its nutritional requirements and to find suitable oviposition sites…”
Get full text

Identification of Human-Derived Volatile Chemicals that Interfere with Attraction of Aedes aegypti Mosquitoes by Logan, James G, Birkett, Michael A, Clark, Suzanne J, Powers, Stephen, Seal, Nicola J, Wadhams, Lester J, Mordue (Luntz), A. Jennifer, Pickett, John A

“…It is known that human individuals show different levels of attractiveness to mosquitoes. In this study, we investigated the chemical basis for low…”
Get full text

Semiochemical strategies for sea louse control: host location cues by Ingvarsdóttir, Anna, Birkett, Michael A, Duce, Ian, Genna, Richard L, Mordue, William, Pickett, John A, Wadhams, Lester J, Mordue (Luntz), A. Jennifer Luntz

“…The development of behavioural bioassays and electrophysiological recording techniques has enabled the role of semiochemicals to be investigated for the first…”
Get full text

Attraction range of a sex pheromone trap for the damson‐hop aphid Phorodon humuli (Hemiptera: Aphididae) by Campbell, Colin A. M., Hardie, Jim, Wadhams, Lester J.

“…The attraction range of olfactory response by winged female gynoparae (autumn migrants that give birth to oviparae, the sexual females) and male damson–hop…”
Get full text

Role of semiochemicals in mate location by parasitic sea louse, Lepeophtheirus salmonis by Ingvarsdóttir, Anna, Birkett, Michael A, Duce, Ian, Mordue, William, Pickett, John A, Wadhams, Lester J, Mordue Luntz, A Jennifer

“…The role of olfaction and diffusible pheromones in mate location behavior of sea lice, Lepeophtheirus salmonis, was assessed with Y-tube behavioral bioassays…”
Get full text

Identification of floral volatiles involved in recognition of oilseed rape flowers, Brassica napus by honeybees, Apis mellifera by Blight, M.M. (IACR-Rothamsted, Harpenden, Hertfordshire, UK.), Le Metayer, M, Pham- Delegue, M.H, Pickett, J.A, Marion-Poll, F, Wadhams, L.J

“…Volatiles from oilseed rape, Brassica napus, flowers were sampled by air entrainment and their relevance to the natural odor profile of the flowers was…”
Get full text

effect of artificial diet on the production of alarm pheromone by Myzus persicae by van Emden, Helmut F, Dingley, Jane, Dewhirst, Sarah Y, Pickett, John A, Woodcock, Christine M, Wadhams, Lester J

“…The cornicle secretion of Myzus persicae reared on artificial diet only elicits an alarm response in plant‐reared conspecifics after the young aphids have been…”
Get full text

New Roles for cis-Jasmone as an Insect Semiochemical and in Plant Defense by Birkett, Michael A., Colin A. M. Campbell, Chamberlain, Keith, Guerrieri, Emilio, Hick, Alastair J., Martin, Janet L., Matthes, Michaela, Napier, Johnathan A., Pettersson, Jan, Pickett, John A., Poppy, Guy M., Pow, Eleanor M., Pye, Barry J., Smart, Lesley E., Wadhams, George H., Wadhams, Lester J., Woodcock, Christine M.

“…cis-Jasmone, or (Z)-jasmone, is well known as a component of plant volatiles, and its release can be induced by damage, for example during insect herbivory…”
Get full text

Identification of Human-Derived Volatile Chemicals That Interfere With Attraction of the Scottish Biting Midge and Their Potential Use as Repellents by Logan, James G., Seal, Nicola J., Cook, James I., Stanczyk, Nina M., Birkett, Michael A., Clark, Suzanne J., Gezan, Salvador A., Wadhams, Lester J., Pickett, John A., Mordue (Luntz), A. Jennifer

“…The Scottish biting midge, Culicoides impunctatus (Diptera: Ceratopogonidae), is a major pest in Scotland, causing a significant impact to the Scottish tourist…”
Get full text

Assessment of Different Legumes for the Control of Striga hermonthica in Maize and Sorghum by Khan, Z.R, Midega, C.A.O, Hassanali, A, Pickett, J.A, Wadhams, L.J

“…The witchweed, Striga hermonthica (Del.) Benth., is a major constraint to maize (Zea mays L.) and sorghum [Sorghum bicolor (L.) Moench] production in…”
Get full text

Isoflavanones from the allelopathic aqueous root exudate of Desmodium uncinatum by Tsanuo, M.K, Hassanali, A, Hooper, A.M, Khan, Z, Kaberia, F, Pickett, J.A, Wadhams, L.J

“…Three isoflavanones, 5,7,2',4'-tetrahydroxy-6-(3-methylbut-2-enyl)isoflavanone (1),…”
Get full text