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G. Powell ; S. Maniar ; J. Pickett ; J. Hardie | 1999Initiation of stylet penetration by aphids depends on the sensory assessment of a number of plant surface features including colour, texture and phytochemicals (volatile and non-volatile). Video recording behaviour of the black bean aphid, Aphis[...]
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The behaviour of summer and autumn winged forms of the black bean aphid, Aphis fabae Scopoli (Homoptera: Aphididae), was compared on two plants utilized at different stages of the insect's life cycle. Adult autumn migrants (gynoparae) are monoph[...]
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J. Klingler ; G. Powell ; G. Thompson ; R. Isaacs | 1998The feeding behaviour, excretion rate, and life history traits of the cotton-melon aphid, Aphis gossypii (Glover) (Homoptera, Aphididae), were measured on a resistant melon, Cucumis melon L., breeding line, AR 5. The site of resistance detection[...]
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G. Powell ; J. Hardie ; J. Pickett | 1995
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G. Powell ; R. Harrington ; N. Spiller | 1992
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The life cycle of some aphid species involves seasonal switches between unrelated summer (secondary) and winter (primary) host plants. Many of these ''host-alternating'' species, belonging to the sub-family Aphidinae, produce two return migrant [...]
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G. Powell | 1992
