Full text is available at the source.
Melatonin Does Not Link the Eyes to the Rest of the Circadian System in Quail: A Neural Pathway Is Involved
Melatonin does not connect the eyes to the body’s internal clock in quail; a brain pathway is involved
AI simplified
Abstract
Enucleation disrupts the circadian activity rhythm in Japanese quail, leading to arrhythmicity in constant darkness.
- Enucleated Japanese quail show disrupted activity patterns under 24-hour light-dark cycles.
- Many enucleated birds can still maintain entrainment to light-dark cycles despite disruptions.
- In constant darkness, enucleated birds become arrhythmic, indicating a crucial role of the eyes beyond light detection.
- The eyes of quail can produce and release melatonin, a hormone involved in timing within the circadian system.
- Neural communication appears to play a role in circadian rhythm regulation, as optic nerve section mimics the effects of enucleation.
AI simplified