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A. Risebrow ; A. Dixon ; A. Risebrow, Editeur scientifique ; A. Dixon, Editeur scientifique | Hoboken [USA] : John Wiley & Sons | 1987
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The results presented in this paper suggest that sugar beet became less suitable as a host for aphids after late June and early July, when the plants were at the 10-12 leaf stage. This was indicated by a faster rate of aphid mortality and greate[...]
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A. Dixon ; P. Kindlmann | 19941. Smallness in British plant-sucking bugs is associated with feeding on the contents of individual plant cells, especially phloem. 2. The sizes of species of aphids living in similar habitats and the rates of water loss from those that have and[...]
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C. Brough ; A. Dixon ; P. Kindlmann | 1990
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A. Urbanska ; W. Tjallingii ; A. Dixon ; B. Leszczynski | 1998Sucrose-agarose gels and sucrose liquid diets were used to study the phenol oxidising enzymes in the salivary secretions of the grain aphid, Sitobion avenae (Fabricius). Activity indicating the presence of two oxidoreductases, polyphenol oxidase[...]
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A. Dixon | 1969
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R. Sequeira ; A. Dixon | 1997
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A. Dixon ; P. Kindlmann ; R. Sequeira ; A. Dixon, Editeur scientifique ; P. Kindlmann, Editeur scientifique ; R. Sequeira, Editeur scientifique | 1996Recent analyses of aphid population dynamics have used yearly totals of the suction trap catches of aphids, but it is questionable whether such analyses reveal anything more than that aerial numbers are regulated in some way. The numbers of the [...]
congrès/colloque
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P. Wellings ; S. Leather ; A. Dixon | 1980
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ouvrage
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