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Science 10 August 1962:
Vol. 137. no. 3528, pp. 430 - 432
DOI: 10.1126/science.137.3528.430
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Articles

Daily Rhythm in the Reaction of Fish to Light

Roger E. Davis 1

1 Department of Fisheries, School of Natural Resources, University of Michigan, Ann Arbor

Bluegills in a 24-hour light-dark cycle were exposed briefly to light at a random time in the daily dark period. The duration of the accompanying "light-shock reaction" daily became longer at times early in the dark period and shorter at times in the later hours of darkness.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)