Induced Plant Resistance and Susceptibility to Late-Season Herbivores of Wild Radish
Open Access
- 1 January 2001
- journal article
- Published by Oxford University Press (OUP) in Annals of the Entomological Society of America
- Vol. 94 (1) , 71-75
- https://doi.org/10.1603/0013-8746(2001)094[0071:iprast]2.0.co;2
Abstract
Wild radish is an annual plant that exhibits broad spectrum induced resistance to herbivores. In two experiments, we placed potted plants [control, manually clipped, and damaged by Pieris rapae (L.) larvae] in the field and assayed for oviposition by P. rapae (a specialist herbivore), damage by flea beetles (a specialist herbivore), and damage by rabbits (a generalist herbivore). Induced responses attracted oviposition by P. rapae and increased damage by flea beetles, while having a minimal effect on rabbit herbivory. Plant families had different levels of resistance to herbivory by rabbits and to oviposition by P. rapae, but not to herbivory by flea beetles. Manual clipping was a poor inducer of plant responses. Induced responses in wild radish can be a double-edged sword, increasing herbivory by some herbivores under certain conditions, while reducing herbivory by other herbivores.Keywords
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