scotophil

English

Noun

scotophil

1. The phase of a two-phase circadian rhythm associated with dark and relaxation or regeneration.
   • 1985, Abraham H. Halevy, CRC Handbook of Flowering - Volume 2, →ISBN, page 217:

     Glucose caused some inhibition of flowering when applied for only the initial scotophil phase of darkness (0 to 9 hr), but there was no comparable effect of sucrose even though its equivalent molarity (0.6 M) represented a higher percentage concentration.

   • 2010, Randy J. Nelson, David L. Denlinger, David E. Somers, Photoperiodism: The Biological Calendar, →ISBN, page 12:

     Short-day effects were seen to result when light was restricted to the photophil, while long-day effects were produced when light encroached into scotophil (figure 1.2).

   • 2012, Stanley D. Beck, Insect Photoperiodism, →ISBN, page 219:

     Under short-day conditions the scotophil occurs entirely during the scotophase, and a short-day response (e.g., diapause) is induced.