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.

Evolution and Development of Body Size and Cell Size in Drosophila melanogaster in Response to Temperature

Linda Partridge, Brian Barrie, Kevin Fowler and Vernon French
Evolution
Vol. 48, No. 4 (Aug., 1994), pp. 1269-1276
DOI: 10.2307/2410384
Stable URL: http://www.jstor.org/stable/2410384
Page Count: 8
  • 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.
Evolution and Development of Body Size and Cell Size in Drosophila melanogaster in Response to Temperature
Preview not available

Abstract

We examined the evolutionary and developmental responses of body size to temperature in Drosophila melanogaster, using replicated lines of flies that had been allowed to evolve for 5 yr at 25⚬C or at 16.5⚬C. Development and evolution at the lower temperature both resulted in higher thorax length and wing area. The evolutionary effect of temperature on wing area was entirely a consequence of an increase in cell area. The developmental response was mainly attributable to an increase in cell area, with a small effect on cell number in males. Given its similarity to the evolutionary response, the increase in body size and cell size resulting from development at low temperature may be a case of adaptive phenotypic plasticity. The pattern of plasticity did not evolve in response to temperature for any of the traits. The selective advantage of the evolutionary and developmental responses to temperature is obscure and remains a major challenge for future work.

Page Thumbnails

  • Thumbnail: Page 
1269
    1269
  • Thumbnail: Page 
1270
    1270
  • Thumbnail: Page 
1271
    1271
  • Thumbnail: Page 
1272
    1272
  • Thumbnail: Page 
1273
    1273
  • Thumbnail: Page 
1274
    1274
  • Thumbnail: Page 
1275
    1275
  • Thumbnail: Page 
1276
    1276