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.

Recovery Studies of X-Irradiated Tribolium castaneum ("Flour Beetle") Larvae

Tracy C. H. Yang and Howard S. Ducoff
Radiation Research
Vol. 46, No. 2 (May, 1971), pp. 290-300
DOI: 10.2307/3573021
Stable URL: http://www.jstor.org/stable/3573021
Page Count: 11
  • Read Online (Free)
  • Download ($10.00)
  • 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.
Recovery Studies of X-Irradiated Tribolium castaneum ("Flour Beetle") Larvae
Preview not available

Abstract

By means of the split-dose technique, a rapid recovery from a portion of radiation-induced damage was found in T. castaneum larvae. After irradiation at 30°C, recovery reached a maximum, or peak, at around 5 hours with a time to half-maximum recovery between 1 and 2 hours and dropped to a minimum around 8 hours. The rate of recovery, however, is strongly temperature-dependent. At low temperature (10°C), no peak could be detected within 8 hours. The arrest of recovery by low temperature is, nevertheless, reversible. In this study, although larvae showed a fast recovery from sublethal radiation damage, no complete or over-recovery was observed. From the slope of Arrhenius plot of the time of half-maximum of recovery vs reciprocal absolute temperature, the activation energy for the recovery of 14-day-old larvae was determined to be about 20.1 kcal/mole. The residual injury at 6 hours at 30°C was found to be proportional to the 7/4 power of the conditioning dose.

Page Thumbnails

  • Thumbnail: Page 
290
    290
  • Thumbnail: Page 
291
    291
  • Thumbnail: Page 
292
    292
  • Thumbnail: Page 
293
    293
  • Thumbnail: Page 
294
    294
  • Thumbnail: Page 
295
    295
  • Thumbnail: Page 
296
    296
  • Thumbnail: Page 
297
    297
  • Thumbnail: Page 
298
    298
  • Thumbnail: Page 
299
    299
  • Thumbnail: Page 
300
    300