Artificial light at night advances avian reproductive physiology

Dominoni, D. , Quetting, M. and Partecke, J. (2013) Artificial light at night advances avian reproductive physiology. Proceedings of the Royal Society of London Series B: Biological Sciences, 280(1756), p. 20123017. (doi:10.1098/rspb.2012.3017)

Dominoni, D. , Quetting, M. and Partecke, J. (2013) Artificial light at night advances avian reproductive physiology. Proceedings of the Royal Society of London Series B: Biological Sciences, 280(1756), p. 20123017. (doi:10.1098/rspb.2012.3017)

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Abstract

Artificial light at night is a rapidly increasing phenomenon and it is presumed to have global implications. Light at night has been associated with health problems in humans as a consequence of altered biological rhythms. Effects on wild animals have been less investigated, but light at night has often been assumed to affect seasonal cycles of urban dwellers. Using light loggers attached to free-living European blackbirds (Turdus merula), we first measured light intensity at night which forest and city birds are subjected to in the wild. Then we used these measurements to test for the effect of light at night on timing of reproductive physiology. Captive city and forest blackbirds were exposed to either dark nights or very low light intensities at night (0.3 lux). Birds exposed to light at night developed their reproductive system up to one month earlier, and also moulted earlier, than birds kept under dark nights. Furthermore, city birds responded differently than forest individuals to the light at night treatment, suggesting that urbanization can alter the physiological phenotype of songbirds. Our results emphasize the impact of human-induced lighting on the ecology of millions of animals living in cities and call for an understanding of the fitness consequences of light pollution.

Item Type:Articles (Other)
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Dominoni, Dr Davide
Authors: Dominoni, D., Quetting, M., and Partecke, J.
Subjects:Q Science > QL Zoology
Q Science > QP Physiology
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Proceedings of the Royal Society of London Series B: Biological Sciences
Publisher:The Royal Society
ISSN:0962-8452
ISSN (Online):1471-2954

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