You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis 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.
Character Displacement in the Psammophile Gerbillidae of Israel
Vol. 60, No. 2 (Mar., 1991), pp. 173-179
Stable URL: http://www.jstor.org/stable/3544863
Page Count: 7
You can always find the topics here!Topics: Sand dunes, Dunes, Rodents, Gerbils, Sand, Skull, Rain, Habitat selection, Vegetation, Deserts
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
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.
Preview not available
The possibility that community-wide character displacement exists among the gerbiline rodents that live in the sand dunes of the Mediterranean coastal plain, the northern Negev and the Arava (southern Negev), Israel, was examined. This was done by searching for equal size ratios in the greatest length of the skull (GTL) and the length of the upper tooth row (UT) of museum specimens of mine species of gerbils which live in these communities. Barton-David tests show that unusual equality of size ratios of UT exist for the northern Negev community and for the GTL for the coastal dunes. It is suggested that the above results are an outcome of competition over food: the smaller species, which have shorter tooth row, specialize in feeding on seeds and the larger species, with longer UT, eat more vegetation. The possible reasons for the difference in the number of species in each community are discussed.
Oikos © 1991 Nordic Society Oikos