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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[...]
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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[...]
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A. Dixon ; R. Chambers ; T. Dharma | 1982
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D. Jackson ; A. Dixon | 19961. The green spruce aphid Elatobium abietinum, was less active and more likely to feed when on mature rather than young needles of Sitka spruce. 2. Compared with survival on mature needles, survival of aphids on young needles was significantly r[...]
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G. Hopkins ; A. Dixon | 2000To establish the importance of different cues for feeding site location in aphids, two birch-feeding species were given access to leaves that were either orientated normally or inverted. Euceraphis betulae used gravity and/or light as the main c[...]
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J. Thacker ; T. Thieme ; A. Dixon | 1997Linear regression models have been constructed to describe variation in abundance of Aphis fabae, Myzus persicae and Acyrthosiphon pisum populations in Restock, Germany. Egg densities, which have been used successfully in the past to predict A. [...]
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When reared under constant conditions from egg hatch the proportion of offspring of Sitobion avenae (F.) (Aphididae: Macrosiphini) that developed into winged individuals declined from the second to fourth generation. The winged individuals produ[...]
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J. Forrest ; A. Hussain ; A. Dixon | 1973
ouvrage
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B. Leszczynski ; T. Bakowski ; B. Rozbicka ; H. Matok ; A. Urbanska ; A. Dixon ; B. Leszczynski, Editeur scientifique ; T. Bakowski, Editeur scientifique ; B. Rozbicka, Editeur scientifique ; H. Matok, Editeur scientifique ; A. Urbanska, Editeur scientifique ; A. Dixon, Editeur scientifique | 1996
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A. Dixon ; S. Wratten | 1971
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