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Genetic, Temporal and Developmental Differences Between Melatonin Rhythm Generating Systems in the Teleost Fish Pineal Organ and Retina
Genetic and age-related differences in melatonin rhythms between the pineal organ and retina in bony fish
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Abstract
Complete melatonin rhythm generating systems are located within individual photoreceptor cells in the pineal organ and retina of Teleost fish.
- Both the pineal organ and retina respond to light, regulating daily variations in melatonin secretion.
- The activity of arylalkylamine N-acetyltransferase (AANAT) is controlled by light in these organs.
- Significant differences exist between the pineal organ and retina regarding the genes for photopigments and AANAT.
- The times of day when AANAT activity and melatonin production peak vary between these two sites.
- Developmental schedules for melatonin production may also differ between the pineal organ and retina.
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