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FEEDING PREFERENCES OF PHYLLOTRETA CRUCIFERAE (COLEOPTERA: CHRYSOMELIDAE) FOR WILTED AND NONWILTED CRUCIFER SEEDLINGS1

Published online by Cambridge University Press:  31 May 2012

P. Palaniswamy ,
F. Matheson  and
R.J. Lamb
P. Palaniswamy
Affiliation:
Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
F. Matheson
Affiliation:
Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
R.J. Lamb
Affiliation:
Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
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Extract

Water stress, especially wilting, can increase the susceptibility of plants to herbivory by insects (Holtzer et al. 1988). Insects as diverse as locusts and leaf-cutting ants prefer wilted foliage (Bernays and Lewis 1986; Vasconcelos and Cherrett 1996). Palaniswamy et al. (1997) observed that the crucifer flea beetle, Phyllotreta cruciferae (Goeze) (Coleoptera: Chrysomelidae), fed on excised and wilted foliage of Thlaspi arvense L. (Cruciferae) but not on intact and turgid foliage. If water stress can make unpalatable plants more palatable, identifying robust resistance to pests such as flea beetles will be difficult. The purpose of this study was to determine whether wilting affects feeding by the crucifer flea beetle and in particular if wilting differentially affects feeding on preferred and nonpreferred plants.

Type
Articles
Information
The Canadian Entomologist , Volume 130 , Issue 3 , June 1998 , pp. 385 - 386
Copyright
Copyright © Entomological Society of Canada 1998

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References

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