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Author (up) Brüning, A.; Hölker, F.; Franke, S.; Kleiner, W.; Kloas, W. url  doi
  Title Influence of light intensity and spectral composition of artificial light at night on melatonin rhythm and mRNA expression of gonadotropins in roach Rutilus rutilus Type Journal Article
  Year 2017 Publication Fish Physiology and Biochemistry Abbreviated Journal Fish Physiol Biochem  
  Volume 44 Issue 1 Pages 1-12  
  Keywords Animals  
  Abstract In this study we investigated the influence of artificial light at night (ALAN) of different intensities (0, 1, 10, 100 lx) and different colours (blue, green, red) on the daily melatonin rhythm and mRNA expression of gonadotropins in roach Rutilus rutilus, a ubiquitous cyprinid, which occur in standing and moderately flowing freshwater habitats of central Europe. Melatonin concentrations were significantly lowered under nocturnal white light already at 1 lx. Low intensity blue, green and red ALAN lowered the melatonin levels significantly in comparison to a dark control. We conclude that ALAN can disturb melatonin rhythms in roach at very low intensities and at different wavelengths and thus light pollution in urban waters has the potential to impact biological rhythms in fish. However, mRNA expression of gonadotropins was not affected by ALAN during the period of the experiments. Thus, suspected implications of ALAN on reproduction of roach could not be substantiated.  
  Address Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Muggelseedamm 310, 12587, Berlin, Germany  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0920-1742 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:28721487 Approved no  
  Call Number LoNNe @ kyba @; GFZ @ kyba @ Serial 1684  
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