Search Results - "Walker, G.P"

Interspecific competition among Cotesia kazak, Microplitis croceipes, and Meteorus pulchricornis (Hymenoptera: Braconidae), larval parasitoids of Helicoverpa armigera (Lepidoptera: Noctuidae) in New Zealand by Walker, G.P., MacDonald, F.H., Wallace, A.R., Cameron, P.J.

“…•Cotesia kazak is the dominant larval parasitoid for its host, Helicoverpa armigera.•Cotesia kazak is dominant over Meteorus pulchricornis and Microplitis…”
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Output of selenium in milk, urine, and feces is proportional to selenium intake in dairy cows fed a total mixed ration supplemented with selenium yeast by Walker, G P, Dunshea, F R, Heard, J W, Stockdale, C R, Doyle, P T

“…Fifteen rumen fistulated Holstein cows in late lactation and fed a total mixed ration offered ad libitum were supplemented with Se yeast to provide 0, 11, 20,…”
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Selenium levels in cows fed pasture and concentrates or a total mixed ration and supplemented with selenized yeast to produce milk with supra-nutritional selenium concentrations by Stockdale, C R, Shields, P M, McKenna, A, Walker, G P, Dunshea, F R, Doyle, P T

“…Seventy multiparous Holstein-Friesian cows were fed different amounts of pasture and concentrates, or a total mixed ration (TMR), for 42 d in mid-lactation to…”
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Increasing selenium concentration in milk: effects of amount of selenium from yeast and cereal grain supplements by Heard, J W, Stockdale, C R, Walker, G P, Leddin, C M, Dunshea, F R, McIntosh, G H, Shields, P M, McKenna, A, Young, G P, Doyle, P T

“…Two experiments were conducted to establish responses in milk Se concentrations in grazing dairy cows to different amounts of dietary Se yeast, and to…”
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Farm-scale dispersal of Bactericera cockerelli in potato crops measured using Bt mark-capture techniques by Cameron, P.J., Wigley, P.J., Charuchinda, B., Walker, G.P., Wallace, A.R.

“…Natural populations of Bactericera cockerelli (Sulc) (Hemiptera: Triozidae), also known as tomato/potato psyllid, were marked in potato [Solanum tuberosum L…”
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Larval morphology of Metaphycus flavus and its role in host attachment and larval cannibalism by Tena, A, Kapranas, A, Walker, G P, Garcia-Marí, F, Luck, R F

“…Metaphycus flavus (Howard) (Hymenoptera: Encyrtidae) is a facultatively gregarious endoparasitoid of soft scales (Hemiptera: Coccidae). When it develops in…”
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Impacts of Bacillus thuringiensis toxins on parasitoids (Hymenoptera: Braconidae) of Spodoptera litura and Helicoverpa armigera (Lepidoptera: Noctuidae) by Walker, G.P., Cameron, P.J., MacDonald, F.M., Madhusudhan, V.V., Wallace, A.R.

“…Spodoptera litura (F.) and Helicoverpa armigera (Hübner) are potential non-target pests in Bacillus thuringiensis (Bt)-transformed potato and brassica crops…”
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Incidence of the introduced parasitoids Cotesia kazak and Microplitis croceipes (Hymenoptera: Braconidae) from Helicoverpa armigera (Lepidoptera: Noctuidae) in tomatoes, sweet corn, and lucerne in New Zealand by Cameron, P.J., Walker, G.P., Herman, T.J.B., Wallace, A.R.

“…Two parasitoids, Cotesia kazak (Telenga) and Microplitis croceipes (Cresson) have been successfully introduced into New Zealand to improve control of…”
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Sieve element occlusion: Interactions with phloem sap-feeding insects. A review by Walker, G.P.

“…Phloem sieve element (SE) occlusion has been hypothesized for decades to be a mechanism of resistance against phloem sap-feeding insects. Few studies have…”
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Mating frequency in dispersing potato tuber moth, Phthorimaea operculella, and its influence on the design of refugia to manage resistance in Bt transgenic crops by Cameron, P.J, Wallace, A.R, Madhusudhan, V.V, Wigley, P.J, Qureshi , M.S, Walker, G.P

“…Mating of potato tuber moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae), was investigated in relation to the dispersal of males in laboratory…”
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Searching and oviposition behavior of a mymarid egg parasitoid, Anagrus nigriventris, on five host plant species of its leafhopper host, Circulifer tenellus by Al-Wahaibi, A.K., Walker, G.P.

“…Searching and oviposition behavior and parasitization ability of Anagrus nigriventris Girault (Hymenoptera: Mymaridae), an egg parasitoid of beet leafhopper,…”
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LUCY: A phase IIIb, real-world study of olaparib in HER2-negative metastatic breast cancer patients with a BRCA mutation by Gelmon, K.A., Walker, G.P., Fisher, G.V., McCutcheon, S.C.

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Viscous roots of active seismogenic faults revealed by geologic slip rate variations by Cowie, P. A., Scholz, C. H., Roberts, G. P., Faure Walker, J. P., Steer, P.

“…The flow of ductile rocks in the deep crust and uppermost mantle is thought to add stress to faults in the shallow crust, potentially bringing the faults…”
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THE STUDY OF TeV VARIABILITY AND THE DUTY CYCLE OF Mrk 421 FROM 3 Yr OF OBSERVATIONS WITH THE MILAGRO OBSERVATORY by Abdo, A A, Abeysekara, A U, Allen, B T, Aune, T, Barber, A S, Berley, D, Braun, J, Chen, C, Christopher, G E, Delay, R S

“…TeV-flaring activity with timescales as short as tens of minutes and an orphan TeV flare have been observed from the blazar Markarian 421 (Mrk 421). The TeV…”
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Characterization and correlation of DC electrical penetration graph waveforms with feeding behavior of beet leafhopper, Circulifer tenellus by Stafford, C.A, Walker, G.P

“…Feeding behavior of beet leafhopper, Circulifer tenellus (Baker) (Homoptera: Cicadellidae), was studied with a DC electrical penetration graph. Nine different…”
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Phoretic Dispersal of Armored Scale Crawlers (Hemiptera: Diaspididae) by Magsig-Castillo, J, Morse, J. G, Walker, G. P, Bi, J. L, Rugman-Jones, P. F, Stouthamer, R

“…Dispersal and colonization of new areas by armored scale insects (Hemiptera: Diaspididae) is achieved by mobile first-instar nymphs, called crawlers, Few…”
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A retrospective evaluation of the host range of four Aphidius species introduced to New Zealand for the biological control of pest aphids by Cameron, P.J., Hill, R.L., Teulon, D.A.J., Stufkens, M.A.W., Connolly, P.G., Walker, G.P.

“…[Display omitted] •The host range of four Aphidius spp. introduced for biological control was reassessed.•No-choice and choice tests were compared with field…”
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Identification of phloem sieve elements as the site of resistance to silverleaf whitefly in resistant alfalfa genotypes by Jiang, Y.X, Walker, G.P

“…Experiments were conducted to locate the plant tissue where resistance is expressed against silverleaf whitefly, Bemisia argentifolii Bellows and Perring…”
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Stylet penetration behavior resulting in inoculation of beet severe curly top virus by beet leafhopper, Circulifer tenellus by Stafford, C.A, Walker, G.P, Creamer, R

“…Beet leafhopper, Circulifer tenellus (Baker) (Homoptera: Cicadellidae), is the only known North American vector of beet curly top virus (Geminiviridae), which…”
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Milagro observations of potential TeV emitters by Abdo, A.A., Abeysekara, A.U., Allen, B.T., Aune, T., Barber, A.S., Berley, D., Braun, J., Chen, C., Christopher, G.E., DeYoung, T., Dingus, B.L., Ellsworth, R.W., Gonzalez, M.M., Goodman, J.A., Hays, E., Hoffman, C.M., Hüntemeyer, P.H., Imran, A., Kolterman, B.E., Linnemann, J.T., McEnery, J.E., Morgan, T., Mincer, A.I., Nemethy, P., Pretz, J., Ryan, J.M., Saz Parkinson, P.M., Schneider, M., Shoup, A., Sinnis, G., Smith, A.J., Vasileiou, V., Walker, G.P., Williams, D.A., Yodh, G.B.

“…This paper reports the results from three targeted searches of Milagro TeV sky maps: two extragalactic point source lists and one pulsar source list. The first…”
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