Melatonin: Effects on the circadian locomotor rhythm of sparrows

Fred W. Turek; Joseph P. McMillan; Michael Menaker

doi:10.1126/science.1006311

Melatonin: Effects on the circadian locomotor rhythm of sparrows

Fred W. Turek^*, Joseph P. McMillan, Michael Menaker

^*Corresponding author for this work

Neurobiology

Research output: Contribution to journal › Article › peer-review

124 Scopus citations

Abstract

The continuous administration of low levels of melatonin via intraperitoneally placed Silastic capsules either (i) shortened the free-running period of activity or (ii) induced continuous activity in house sparrows (Passer domesticus) maintained in constant darkness. After the melatonin-filled capsules were removed, the period of the circadian rhythm of activity lengthened in rhythmic birds and normal rhythmicity was restored in continuously active birds. The results suggest that melatonin is involved in the physiological control of circadian rhythmicity in sparrows.

Original language	English (US)
Pages (from-to)	1441-1443
Number of pages	3
Journal	Science
Volume	194
Issue number	4272
DOIs	https://doi.org/10.1126/science.1006311
State	Published - Jan 1 1976

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abstract = "The continuous administration of low levels of melatonin via intraperitoneally placed Silastic capsules either (i) shortened the free-running period of activity or (ii) induced continuous activity in house sparrows (Passer domesticus) maintained in constant darkness. After the melatonin-filled capsules were removed, the period of the circadian rhythm of activity lengthened in rhythmic birds and normal rhythmicity was restored in continuously active birds. The results suggest that melatonin is involved in the physiological control of circadian rhythmicity in sparrows.",

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AU - Menaker, Michael

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AB - The continuous administration of low levels of melatonin via intraperitoneally placed Silastic capsules either (i) shortened the free-running period of activity or (ii) induced continuous activity in house sparrows (Passer domesticus) maintained in constant darkness. After the melatonin-filled capsules were removed, the period of the circadian rhythm of activity lengthened in rhythmic birds and normal rhythmicity was restored in continuously active birds. The results suggest that melatonin is involved in the physiological control of circadian rhythmicity in sparrows.

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Melatonin: Effects on the circadian locomotor rhythm of sparrows

Abstract

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