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.

Seed Consumption and Dispersal by the Spur-Thighed Tortoise Testudo graeca

Margarita Cobo and Ana C. Andreu
Oikos
Vol. 51, No. 3 (Mar., 1988), pp. 267-273
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3565307
Stable URL: http://www.jstor.org/stable/3565307
Page Count: 7
  • 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.
Seed Consumption and Dispersal by the Spur-Thighed Tortoise Testudo graeca
Preview not available

Abstract

Seeds belonging to 34 species, mainly Poaceae, Asteraceae and Juncaceae, were identified in a sample of 170 faecal pellets of Testudo graeca L. from Doñana Biological Reserve, Huelva province, Spain. The effect of the digestion of these chelonians on the seeds of Spergula arvensis, Hypochaeris glabra, Rumex bucephalophorus, Ornithopus sativus, Briza maxima and Lavandula stoechas was studied. The average period of retention in the digestive tract was found to be 5.3 d and the percentage of recovered seeds in the faeces was 19.3 (6.5-34.2). All seeds germinated, except in H. glabra and L. stoechas, suggesting that T. graeca is a disperser for these species. Seeds of S. arvensis that pass through the digestive tract of the tortoise show increased germination compared with controls.

Page Thumbnails

  • Thumbnail: Page 
267
    267
  • Thumbnail: Page 
268
    268
  • Thumbnail: Page 
269
    269
  • Thumbnail: Page 
270
    270
  • Thumbnail: Page 
271
    271
  • Thumbnail: Page 
272
    272
  • Thumbnail: Page 
273
    273