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.

Direct Observation of Sexual Isolation between Allopatric and between Sympatric Strains of the Different Drosophila paulistorum Races

Lee Ehrman
Evolution
Vol. 19, No. 4 (Dec., 1965), pp. 459-464
DOI: 10.2307/2406243
Stable URL: http://www.jstor.org/stable/2406243
Page Count: 6
  • Read Online (Free)
  • Download ($4.00)
  • 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.
Direct Observation of Sexual Isolation between Allopatric and between Sympatric Strains of the Different Drosophila paulistorum Races
Preview not available

Abstract

Those races of the Drosophila paulistorum species-complex of six known races which occur sympatrically and retain their separate identities in nature, exhibit a greater sexual isolation than do strains of the same races which occur allopatrically. This behavioral isolation was tested by a recently developed direct observation technique and bespeaks the correctness of considering these races as incipient species.

Page Thumbnails

  • Thumbnail: Page 
459
    459
  • Thumbnail: Page 
460
    460
  • Thumbnail: Page 
461
    461
  • Thumbnail: Page 
462
    462
  • Thumbnail: Page 
463
    463
  • Thumbnail: Page 
464
    464