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Science 9 January 1970:
Vol. 167. no. 3915, p. 170
DOI: 10.1126/science.167.3915.170
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Articles

Photoperiodic Induction and Termination of Diapause in an Insect: Response to Changing Day Lengths

Maurice J. Tauber 1 and Catherine A. Tauber 1

1 Department of Entomology and Limnology, Cornell University, Ithaca, New York 14850

Chrysopa carnea diapaused after experiencing a decrease in day length above the critical photoperiod. Animals experiencing increasing day lengths less than the critical photoperiod did not diapause, and those in diapause began to reproduce. These experiments are the first to demonstrate that insects respond to the direction of change in photoperiods (both increasing and decreasing) which do not encroach on the critical photoperiod.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Induction and Inhibition of Diapause by the Same Photoperiod: Experimental Evidence for a "Double Circadian Oscillator Clock".
H. R. Spieth, F. Xue, and K. Strau (2004)
J Biol Rhythms 19, 483-492
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Science. ISSN 0036-8075 (print), 1095-9203 (online)