Photoperiodism: shall EYA compare thee to a summer's day?

Curr Biol. 2011 Jan 11;21(1):R22-5. doi: 10.1016/j.cub.2010.11.060.


Seasonal changes in day length are used by plants and animals to synchronize annual rhythms in reproduction, physiology, and behavior to the environment. Increasing day length during spring causes sudden changes in the mammalian reproductive system once the critical photoperiod is reached. The molecular mechanism behind this switch is now quickly being elucidated.

Publication types

  • Comment

MeSH terms

  • Animals
  • Mammals / physiology*
  • Melatonin / metabolism
  • Photoperiod*
  • Reproduction / physiology
  • Seasons*
  • Thyroxine / metabolism
  • Time Factors
  • Triiodothyronine / metabolism


  • Triiodothyronine
  • Melatonin
  • Thyroxine