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How brightness and color of artificial night light affect melatonin cycles and reproductive gene activity in roach fish
Updated
Abstract
Melatonin concentrations were significantly lowered under nocturnal white light at just 1 lx.
- Artificial light at night (ALAN) at low intensities can disrupt melatonin rhythms in roach.
- Low intensity blue, green, and red light also significantly reduced melatonin levels compared to darkness.
- Light pollution in urban waters may impact biological rhythms in fish.
- The mRNA expression of gonadotropins was not affected by ALAN during the experiments.
- Implications of ALAN on the reproduction of roach could not be substantiated.
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