Reports

Daily Rhythm in the Reaction of Fish to Light

Science  10 Aug 1962:
Vol. 137, Issue 3528, pp. 430-432
DOI: 10.1126/science.137.3528.430

Abstract

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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