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OIKOS 89: 493500. Copenhagen 2000 Specificity of induced resistance in wild radish: causes and
 

Summary: OIKOS 89: 493­500. Copenhagen 2000
Specificity of induced resistance in wild radish: causes and
consequences for two specialist and two generalist caterpillars
Anurag A. Agrawal
Agrawal, A. A. 2000. Specificity of induced resistance in wild radish: causes and
consequences for two specialist and two generalist caterpillars. ­ Oikos 89: 493­500.
Inducible plant resistance against herbivores is becoming a paradigm of plant­herbi-
vore ecology. Fundamental to understanding induced resistance and its evolutionary
ecology is specificity of ``induction'' and ``effects''. Specificity in the induction of
resistance refers to whether plant damage by various herbivores causes the same
response in plants. Specificity in the effects of induced resistance refers to whether
induction has the same consequences (i.e., reduced preference or performance) for
various herbivores. I examined both specificity of induction and effect employing four
lepidopteran herbivores and wild radish plants, a system for which fitness benefits
and costs of induction have been documented for the plant. Variation in the
specificity of induction and effects of induced plant resistance was found; however,
this variation was not associated with diet specialization in the herbivores (i.e.,
specialists vs generalists). Induction caused by Plutella (specialist) and Spodoptera
(generalist) resulted in general resistance to all of the herbivores, induction caused by
Pieris (specialist) induced resistance only to Spodoptera (generalist) and Pieris, and

  

Source: Agrawal, Anurag - Department of Ecology and Evolutionary Biology & Entomollogy, Cornell University

 

Collections: Environmental Sciences and Ecology