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Author Wilhelm, S.I.; Schau, J.J.; Schau, E.; Dooley, S.M.; Wiseman, D.L.; Hogan, H.A. url  doi
openurl 
  Title Atlantic Puffins are Attracted to Coastal Communities in Eastern Newfoundland Type Journal Article
  Year 2013 Publication Northeastern Naturalist Abbreviated Journal  
  Volume 20 Issue 4 Pages 624-630  
  Keywords (up) Animals  
  Abstract The Puffin Patrol is a volunteer-based group that rescues fledgling Fratercula arctica (Atlantic Puffin) stranded in coastal communities overlooking the Witless Bay Seabird Ecological Reserve in Newfoundland, Canada, which hosts the two largest Atlantic Puffin colonies in North America. We examine local environmental factors (visibility, moon phase) that may influence light attraction in Atlantic Puffins and explore the use of weight data and other information collected through this volunteer-based initiative to help monitor the health of this important population. In 2011, only 13 live Atlantic Puffins were captured despite nightly search efforts throughout the fledging period; this low capture rate was attributed to poor breeding success at the colony. In contrast, in 2012, 414 live fledgling puffins were captured and successfully released between 6 August and 5 September; 388 of these were banded and weighed prior to release. Capture rates on nights with poor visibility due to fog (26 fledglings per night) were similar to fogless nights (24 fledglings per night). Most live Atlantic Puffins were captured within a two-week period around the new moon. Fledglings weighed 248 ± 25 (SD) g, range = 160–315 g; weights significantly declined over the fledging period. In addition to the direct conservation benefits of saving grounded Atlantic Puffins, information collected through this volunteer-based initiative 1) provides insight on factors affecting Atlantic Puffins' attraction to coastal communities, 2) shows the importance of mitigating artificial light during the birds' fledging period within these developing communities, and 3) helps collect important demographic information without causing additional disturbance to the colonies.  
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  Call Number LoNNe @ christopher.kyba @ Serial 384  
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Author Bedrosian, T.A.; Weil, Z.M.; Nelson, R.J. url  doi
openurl 
  Title Chronic dim light at night provokes reversible depression-like phenotype: possible role for TNF Type Journal Article
  Year 2013 Publication Molecular Psychiatry Abbreviated Journal  
  Volume 18 Issue Pages 930-936  
  Keywords (up) Animals  
  Abstract The prevalence of major depression has increased in recent decades and women are twice as likely as men to develop the disorder. Recent environmental changes almost certainly have a role in this phenomenon, but a complete set of contributors remains unspecified. Exposure to artificial light at night (LAN) has surged in prevalence during the past 50 years, coinciding with rising rates of depression. Chronic exposure to LAN is linked to increased risk of breast cancer, obesity and mood disorders, although the relationship to mood is not well characterized. In this study, we investigated the effects of chronic exposure to 5 lux LAN on depression-like behaviors in female hamsters. Using this model, we also characterized hippocampal brain-derived neurotrophic factor expression and hippocampal dendritic morphology, and investigated the reversibility of these changes 1, 2 or 4 weeks following elimination of LAN. Furthermore, we explored the mechanism of action, focusing on hippocampal proinflammatory cytokines given their dual role in synaptic plasticity and the pathogenesis of depression. Using reverse transcription-quantitative PCR, we identified a reversible increase in hippocampal tumor necrosis factor (TNF), but not interleukin-1β, mRNA expression in hamsters exposed to LAN. Direct intracerebroventricular infusion of a dominant-negative inhibitor of soluble TNF, XPro1595, prevented the development of depression-like behavior under LAN, but had no effect on dendritic spine density in the hippocampus. These results indicate a partial role for TNF in the reversible depression-like phenotype observed under chronic dim LAN. Recent environmental changes, such as LAN exposure, may warrant more attention as possible contributors to rising rates of mood disorders.  
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  Call Number LoNNe @ christopher.kyba @ Serial 386  
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Author Byrkjedal, I.; Lislevand, T.; Vogler, S. url  openurl
  Title Do passerine birds utilise artificial light to prolong their diurnal activity during winter at northern latitudes? Type Journal Article
  Year 2014 Publication Ornis Norvegica Abbreviated Journal  
  Volume 37 Issue Pages  
  Keywords (up) Animals  
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  Call Number LoNNe @ christopher.kyba @ Serial 387  
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Author Kate, N.N.; Chandrasekhar, M.; Kondam, A.; Kayalvizhi, E.; Suresh, M.; Kavitha, U. url  openurl
  Title A study on effect of altered circadian rhythm in the development of obesity Type Journal Article
  Year 2012 Publication Int J Biol Med Res Abbreviated Journal  
  Volume 3 Issue 2 Pages 1595 – 1601  
  Keywords (up) Animals  
  Abstract Background: Most living things have a daily cycle that reflects the rising and setting of the sun. A variety of studies have demonstrated that retinal light exposure can increase alertness at night. The global increase in the prevalence of obesity and metabolic disorders coincides with the increase of exposure to light at night (LAN) and shift work. The circadian clock prepares individuals for predictable events such as food availability and sleep, and disruption of clock function causes circadian and metabolic disturbances. Aim: To determine whether a causal relationship exists between night time light exposure behavioral changes and obesity. Methods: In this experiment 18 Swiss–albino male mice were divided into three groups i.e. Continuous light exposure (CL), light at night (LAN), standard (LD) light/dark cycle (control) and the effect of altered circadian rhythm on development of obesity and behavioral changes is seen. The body mass was assessed at the end of eight weeks to find out whether there was any correlation between the three variants. Results: Mice housed in continuous light (CL) or LAN have significantly increased body mass and increased prevalence of day time eating and altered behavioral pattern than mice in a standard (LD) light/dark cycle. Conclusion: These results suggest that light at night disrupt the timing of food intake and other metabolic signals, leading to excess weight gain. Melatonin is vital to this process, mediating the seasonal photoperiodic information through the clock system. Disrupting the melatonin signal or increasing the duration of light leads to changes in metabolism and adiposity consistent with fat storage and insulin resistance. These data are relevant to the coincidence between increasing use of light at night and obesity in humans (night shift worker).  
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  Call Number LoNNe @ christopher.kyba @ Serial 390  
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Author La, V.T. url  openurl
  Title Diurnal and Nocturnal Birds Vocalize at Night: A Review. Type Journal Article
  Year 2012 Publication The Condor Abbreviated Journal  
  Volume 114 Issue Pages 245-257  
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  Call Number LoNNe @ christopher.kyba @ Serial 391  
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