Journal of Insect Behavior

, Volume 14, Issue 2, pp 147–156

Induced Resistance in Wild Tobacco with Clipped Sagebrush Neighbors: The Role of Herbivore Behavior

  • Richard Karban
  • Kimberly J. Baxter
Article

DOI: 10.1023/A:1007893626166

Cite this article as:
Karban, R. & Baxter, K.J. Journal of Insect Behavior (2001) 14: 147. doi:10.1023/A:1007893626166

Abstract

Previous experiments showed that wild tobacco plants with experimentally clipped sagebrush neighbors experienced less damage by grasshoppers than tobacco plants with unclipped sagebrush neighbors. This result could have been caused by grasshoppers preferring not to feed near clipped sagebrush. This hypothesis was tested in field choice experiments using six grasshopper species feeding on an unresponsive and uniformly palatable food. When offered food that was either close to clipped sagebrush or close to unclipped sagebrush, grasshoppers showed no preference. When offered food that was either close to sagebrush (3 cm) or far from sagebrush (30 cm), grasshoppers preferred to feed far from sagebrush. However, this preference was similar whether or not the sagebrush had been clipped. Avoidance of feeding near clipped sagebrush, independent of changes in tobacco, was not found to contribute to our earlier result that tobacco near clipped sagebrush suffered less herbivory than tobacco near unclipped sagebrush.

communication between plants eavesdropping feeding grasshoppers preference sagebrush tobacco 

Copyright information

© Plenum Publishing Corporation 2001

Authors and Affiliations

  • Richard Karban
    • 1
  • Kimberly J. Baxter
    • 1
  1. 1.Department of EntomologyUniversity of CaliforniaDavis

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