Thermoperiodic influences on plasma melatonin rhythms in the lizard Tiliqua rugosa: effect of thermophase duration.

@article{Firth1991ThermoperiodicIO,
  title={Thermoperiodic influences on plasma melatonin rhythms in the lizard Tiliqua rugosa: effect of thermophase duration.},
  author={Bruce T. Firth and David John Kennaway and Ingrid Belan},
  journal={Neuroscience letters},
  year={1991},
  volume={121 1-2},
  pages={139-42}
}
Rhythms of plasma melatonin levels were determined in lizards (Tiliqua rugosa) subjected to a 12 h photocycle (12 h light: 12 h dark) at constant 33 degrees C, and at 7 different thermoperiods (33 degrees C thermophase and 15 degrees C cryophase) whose thermophase duration ranged from 1.5 to 21 h. The melatonin secretion rate, as measured by the amplitude and duration of elevated melatonin levels and the area under the curve, was maximal at thermoperiods whose thermophase was between 9 and 18 h… CONTINUE READING
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