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Science 2 April 1976:
Vol. 192. no. 4234, pp. 59 - 60
DOI: 10.1126/science.1257756
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Articles

Science, Vol 192, Issue 4234, 59-60
Copyright © 1976 by American Association for the Advancement of Science

articles

Insect photoperiodism: the "T experiment" as evidence for an hourglass mechanism

MF Bowen and SD Skopik

"T experiments" demonstrate that the clock controlling termination of larval diapause in Ostrinia nubilalis is an hourglass mechanism that measures 8 hours of darkness. Circadian oscillations are not involved in photoperiodic time measurement in this species.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Diet-Dependent Switch from Circadian to Hourglass-Like Operation of an Insect Photoperiodic Clock.
B. Dumortier and J. Brunnarius (1989)
J Biol Rhythms 4, 481-490
   Abstract »    PDF »
Diapause Induction and Termination: North-South Strain Differences in Ostrinia nubilalis.
S. D. Skopik and M. Takeda (1987)
J Biol Rhythms 2, 13-22
   Abstract »    PDF »
Insect Photoperiodism: Diversity of Results in Night-Break Experiments, Including Nonresponsiveness to Light.
S. D. Skopik, M. Takeda, W. J. Cain, and N.G. Patel (1986)
J Biol Rhythms 1, 243-249
   Abstract »    PDF »
Photoperiodic Control of Diapause Induction and Termination in Ostrinia nubilalis: Two Different Clocks?.
S. D. Skopik and M. Takeda (1986)
J Biol Rhythms 1, 137-143
   Abstract »    PDF »


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