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Author Bachleitner, W.; Kempinger, L.; Wülbeck, C.; Rieger, D.; Helfrich-Förster, C.
Title Moonlight shifts the endogenous clock of Drosophila melanogaster Type Journal Article
Year 2007 Publication PNAS Abbreviated Journal
Volume 104 Issue 9 Pages 3538–3543
Keywords Animals; circadian rhythm; dual; oscillator model; PERIOD; synchronization; TIMELESS
Abstract The ability to be synchronized by light–dark cycles is a fundamental property of circadian clocks. Although there are indications that circadian clocks are extremely light-sensitive and that they can be set by the low irradiances that occur at dawn and dusk, this has not been shown on the cellular level. Here, we demonstrate that a subset of Drosophila's pacemaker neurons responds to nocturnal dim light. At a nighttime illumination comparable to quarter-moonlight intensity, the flies increase activity levels and shift their typical morning and evening activity peaks into the night. In parallel, clock protein levels are reduced, and clock protein rhythms shift in opposed direction in subsets of the previously identified morning and evening pacemaker cells. No effect was observed on the peripheral clock in the eye. Our results demonstrate that the neurons driving rhythmic behavior are extremely light-sensitive and capable of shifting activity in response to the very low light intensities that regularly occur in nature. This sensitivity may be instrumental in adaptation to different photoperiods, as was proposed by the morning and evening oscillator model of Pittendrigh and Daan. We also show that this adaptation depends on retinal input but is independent of cryptochrome.
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Call Number LoNNe @ christopher.kyba @ Serial 405
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Author Nowinszky, L.
Title Nocturnal illumination and night flying insects Type Journal Article
Year 2004 Publication APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH Abbreviated Journal
Volume 2 Issue 1 Pages 17–52
Keywords Animals; light-trap; collecting distance; Babinet-point; moon phases
Abstract The present study discusses the light trapping of insects depending on the environmental illumination, twilight polarization phenomena and the moon phases. The trapping data were taken of Hungarian national light-trap network. The important results are the followings: The Babinet-point, a polarization free spot of the sky at twilight, can be a role of orientation of insects. The height of the Moon above

the horizon is in negative correlation with the number of the caught insects. The maximum individual

number of species was collected at various moon phases.
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Call Number LoNNe @ christopher.kyba @ Serial 407
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Author Moore, M.V.; Pierce, S.M.; Walsh, H.M.; Kvalvik, S.K.; Lim, J.D.
Title Urban light pollution alters the diel vertical migration of Daphnia Type Journal Article
Year 2000 Publication Verh. Internat. Verein. Limnol Abbreviated Journal
Volume 27 Issue Pages 1-4
Keywords Animals
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Call Number LoNNe @ christopher.kyba @ Serial 408
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Author Salmon, M.
Title Artificial night lighting and sea turtles Type Journal Article
Year 2003 Publication Biologist Abbreviated Journal
Volume 50 Issue 4 Pages 163-168
Keywords Animals
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Call Number LoNNe @ christopher.kyba @ Serial 409
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Author Bergen; F.; Abs, M.
Title Etho-ecological study of the singing activity of the blue tit (parus caeruleus), great tit (parus major) and chaffinch (fringilla coelebs). Type Journal Article
Year 1997 Publication J Ornithol Abbreviated Journal
Volume 138 Issue Pages 451-467
Keywords Animals
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Call Number LoNNe @ christopher.kyba @ Serial 410
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