Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Size-Dependent Root Herbivory on Cynoglossum officinale

Adriana H. Prins, Henk W. Nell and Peter G. L. Klinkhamer
Oikos
Vol. 65, No. 3 (Dec., 1992), pp. 409-413
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3545556
Stable URL: http://www.jstor.org/stable/3545556
Page Count: 5
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Size-Dependent Root Herbivory on Cynoglossum officinale
Preview not available

Abstract

The weevil Ceuthorhynchus (Boraginobius) cruciger was the most important root herbivore of the biennial herb Cynoglossum officinale in Meijendel, The Netherlands. Only a few other species were found, but always in less than 5% of the plants. The infestation level of flowering plants of C. officinale was 22% in 1988, 56% in 1989 and 61% in 1990; in rosettes 0% in 1988 and 6% in 1989. Weevil attack was size-dependent: weevils preferred large plants over small plants and, when controlling for size, flowering plants over rosettes. Attack by the weevil significantly reduced seed production in C. officinale: the number of seeds produced per unit of plant weight as well as seed weight per unit of plant weight were smaller for the attacked plants.

Page Thumbnails

  • Thumbnail: Page 
409
    409
  • Thumbnail: Page 
410
    410
  • Thumbnail: Page 
411
    411
  • Thumbnail: Page 
412
    412
  • Thumbnail: Page 
413
    413