Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in 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.
Journal Article

Gloger's Rule and Pigmentation of Collembola

E. H. Rapoport
Evolution
Vol. 23, No. 4 (Dec., 1969), pp. 622-626
DOI: 10.2307/2406857
Stable URL: http://www.jstor.org/stable/2406857
Page Count: 5

You can always find the topics here!

Topics: Pigmentation, Species, Latitude, Antarctic regions, Colors, Altitude, Fauna, Humidity, Mammals, Insect ecology
Were these topics helpful?
See somethings inaccurate? Let us know!

Select the topics that are inaccurate.

Cancel
  • Read Online (Free)
  • Download ($4.00)
  • Subscribe ($19.50)
  • Add to My Lists
  • 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.
Gloger's Rule and Pigmentation of Collembola
Preview not available

Abstract

If complete faunal collections of Collembola are classified to dark and light species, a clear positive correlation appears between the percentage of dark forms and latitude, i.e., opposite to the case in homeotherm animals. Comparing the faunulae of 21 localities from equator to the poles, the correlation coefficient r = + 0.806 (P < .001) and the regression line is described by the equation Y = 18.48 + 0.676 X. If the number of individuals--instead of species--is computed, r increases to +0.911. The increase of the proportion of dark species is also shown at higher altitudes. Literature data from the Pyrenees and the Swiss Alps were considered from ca. 1000 to 3000 m above sea level and yielded r = +0.996 and r = +0.890, and the regression lines described by Y = 39.82 + 0.0098 X and Y = 26.96 + 0.0122 X, respectively. Temperature seems to be an important factor in determining the pigmentation of collembolan species.

Page Thumbnails

  • Thumbnail: Page 
622
    622
  • Thumbnail: Page 
623
    623
  • Thumbnail: Page 
624
    624
  • Thumbnail: Page 
625
    625
  • Thumbnail: Page 
626
    626
Part of Sustainability