Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Onset of melatonin secretion is much earlier in degus than in rats. Melatonin secretion was monitored in degus (red dots, n = 3), Sprague Dawley (SD) rats (purple dots, n = 5), and Wistar rats (green dots, n = 8) using pineal microdialysis, and normalized to daily maximum levels. The dashed line represents 20% of the maximum levels. Animals were housed in LD12:12 hr with lights-off at 18:00 hr. Compared with rats, degus clearly display advanced onset of melatonin secretion.
