Circadian rhythms in serotonin, norepinephrine, and epinephrine contents of the pineal-paraphyseal complex of the soft-shelled turtle (Lissemys punctata punctata).
Diurnal variations in pineal serotonin, norepinephrine, and epinephrine levels were measured at four different time intervals (06:00, 12:00, 18:00, and 24:00 hr) in adult male soft-shelled turtles. The serotonin level increased during day and decreased during night. But the norepinephrine and epinephrine levels showed reverse changes. The findings reveal that there is a distinct circadian rhythm in serotonin, norepinephrine, and epinephrine contents of the pineal-paraphyseal complex in adult male soft-shelled turtles.
D000818:Animals; D002940:Circadian Rhythm; D004837:Epinephrine / Q000378:metabolism*; D008297:Male; D009638:Norepinephrine / Q000378:metabolism*; D010870:Pineal Gland / Q000378:metabolism*; D012701:Serotonin / Q000378:metabolism*; D013687:Telencephalon / Q000378:metabolism; D014426:Turtles / Q000378:metabolism*
D012701:Serotonin; D009638:Norepinephrine; D004837:Epinephrine