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Auteur A. Dixon |
Documents disponibles écrits par cet auteur (60)
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B. Stadler ; A. Dixon | 19991. Aphids show a range of associations with ants from nonattendance to obligate myrmecophily. Aphis fabae cirsiiacanthoides is facultatively associated with ants, while Symydobius oblongus is an obligate myrmecophile. The selection pressures tha[...]ouvrage
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article/chapitre/communication
ouvrage
article/chapitre/communication
A. Dixon ; P. Kindlmann ; V. Jarosik | 19951. The distribution of the body sizes of British aphids is right-skewed on a logarithmic axis, as in other taxa, Over the size range 2-5 mm there is a marked decrease in numbers of species with increase in size, which on a log log scale has an e[...]article/chapitre/communication
article/chapitre/communication
R. Mcvean ; A. Dixon ; R. Harrington | 1999Regional variation in the number of pea aphids caught in the suction traps of the Rothamsted Insect Survey (RIS) was associated with the proportion of each region under pea crops. The degree of infestation of crops was similar in areas of high a[...]article/chapitre/communication
A. Hussain ; J. Forrest ; A. Dixon | 1973article/chapitre/communication
M. Maudsley ; A. Mackenzie ; J. Thacker ; A. Dixon | 1996Long sequences of data on the incidence of cereal aphids from five European countries were analysed for evidence of density dependent processes occurring between years. Using a randomisation test (Pollard, Lakhani & Rotheray, 1987), density depe[...]congrès/colloque
K. Niemczyk, - Editeur scientifique ; Ecology and Effectiveness of Aphidophaga (1987/08/31; 1987/09/05; Teresin; POL) ; A. Dixon, - Editeur scientifique | The Hague [NLD] : SPB Academic Publishing | 1988article/chapitre/communication
This paper reviews the evidence for the fundatrix specialization hypothesis and attempts to quantify the relative advantage of host alternation and define the conditions favouring the evolution of this way of life. Contrary to the predictions of[...]article/chapitre/communication
P. Kindlmann ; A. Dixon | 1994A simple model reveals one possible explanation of why aphids and organisms with a similar bionomy, i.e., have a high rate of population increase, a short adult life, and are time - limited dispersers, are so highly host specific. It indicates t[...]article/chapitre/communication