Circadian variation in the levels of red pigment-dispersing hormone and 5-hydroxytryptamine in the eyestalks of the fiddler crab, Uca pugilator
Comparative Biochemistry and Physiology Part C Comparative PharmacologyPublished 1 January 1977
Sue W. Fingerman, Milton Fingerman
Citations27
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TL;DR
Circadian variations in the levels of red pigment-dispersing hormone and 5-hydroxytryptamine in the eyestalks of the fiddler crab, Uca pugilator, were found and the possible role of 5-HT in controlling release of RPDH is discussed.
Abstract
1. Circadian variations in the levels of red pigment-dispersing hormone (RPDH) and 5-hydroxytryptamine (5-HT) in the eyestalks of the fiddler crab, Uca pugilator, were found. 2. 5-HT in whole eyestalks peaked at midnight and was at a minimum at 1800 hr. 3. RPDH both in whole eyestalks and in sinus glands alone taken the eyestalks attained maximum level at 0600 hr and was at a minimum at 1800 hr. The minimum RPDH level in the optic ganglion alone from the eyestalks was also at 1800 hr but the peak RPDH level in the optic ganglia occured at midnight. 4. The possible role of 5-HT in controlling release of RPDH is discussed.
Keywords
NeuroscienceBiochemistry, Genetics and Molecular BiologyEnvironmental Science
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