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The Action Spectrum for Breaking Diapause in the Codling Moth, Laspeyresia pomonella (L.), and the Oak Silkworm, Antheraea pernyi Guer.

K. H. Norris, F. Howell, D. K. Hayes, V. E. Adler, W. N. Sullivan and M. S. Schechter
Proceedings of the National Academy of Sciences of the United States of America
Vol. 63, No. 4 (Aug. 15, 1969), pp. 1120-1127
Stable URL: http://www.jstor.org/stable/59469
Page Count: 8
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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.
The Action Spectrum for Breaking Diapause in the Codling Moth, Laspeyresia pomonella (L.), and the Oak Silkworm, Antheraea pernyi Guer.
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Abstract

The action spectrum for breaking diapause in the oak silkworm, Antheraea pernyi Guer., and the codling moth, Laspeyresia pomonella (L.), was determined from 400 to 700 nm with a wedge-interference spectrograph. Insects were exposed to ten hours of white light, followed by six hours of spectral light each day for 45 days. The portion of the spectrum between 400 and 500 nm was found to be the most effective in terminating diapause. Diapause was broken for both insects with energy levels as low as 0.02 μ w/cm2.

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