Duration of Melatonin Regulates Seasonal Changes in Song Control Nuclei of the House Sparrow, Passer domesticus: Independence from Gonads and Circadian Entrainment

@article{Cassone2008DurationOM,
  title={Duration of Melatonin Regulates Seasonal Changes in Song Control Nuclei of the House Sparrow, Passer domesticus: Independence from Gonads and Circadian Entrainment},
  author={V. Cassone and P. Bartell and B. Earnest and Vinod Kumar},
  journal={Journal of Biological Rhythms},
  year={2008},
  volume={23},
  pages={49 - 58}
}
Avian behavior and physiology are temporally regulated by a complex circadian clock on both a daily and an annual basis. The circadian secretion of the hormone melatonin is a critical component of the regulation of circadian/daily processes in passerine birds, but there is little evidence that the gland regulates annual changes in primary reproductive function. Here it is shown that locomotor rhythms of house sparrows, Passer domesticus, which are made arrhythmic by either pinealectomy or… Expand
Circadian Regulation of Bird Song, Call, and Locomotor Behavior by Pineal Melatonin in the Zebra Finch
TLDR
A role for pineal melatonin is demonstrated in regulating circadian oscillations of avian vocalizations in addition to locomotor activity and it is suggested that these behaviors might be controlled by separable circadian clockworks and that pinealmelatonin entrains them all through a circadian clock. Expand
Circadian adaptation to seasons: effects on activity behavior in subtropical House Sparrow, Passer domesticus
TLDR
House Sparrows had varied daily activity pattern and duration between seasons, and endogenous clock seems to closely correspond with environmental photoperiod in determining the daily activity behavior in House Sparrows. Expand
Melatonin duration gates photoperiodic vocal state change in a songbird
TLDR
It is concluded that house sparrows use the calendar information provided by melatonin duration to control seasonal vocalization behavior, independent of effects on and of the gonads. Expand
Dissociation of circadian activity and singing behavior from gene expression rhythms in the hypothalamus, song control nuclei and cerebellum in diurnal zebra finches
TLDR
The persistence of clock gene oscillations in the song control brain regions is demonstrated for the first time and the dissociation of circadian behavior from genetic oscillations is shown in relation to an imposed light environment. Expand
The role of the pineal gland in the photoperiodic control of bird song frequency and repertoire in the house sparrow, Passer domesticus
TLDR
House sparrows, Passer domesticus, and Pinealectomized birds expressed larger, more rapid increases in daily vocal rate and song repertoire size than did the SHAM birds during the long summer days, suggesting that the pineal gland conveys photoperiodic information to the vocal control system, which in turn regulates song behavior. Expand
Pinealectomy abolishes circadian behavior and interferes with circadian clock gene oscillations in brain and liver but not retina in a migratory songbird
TLDR
The pineal gland dependence of the generation of circadian gene oscillations in the hypothalamus, not retina, and peripheral brain and liver tissues in migratory redheaded buntings is suggested. Expand
Developmental effects of constant light on circadian behaviour and gene expressions in zebra finches: Insights into mechanisms of metabolic adaptation to aperiodic environment in diurnal animals.
TLDR
Dissociation of circadian behaviour from clock gene rhythms is demonstrated, and molecular insights are provided into possible mechanisms at different levels (behaviour and physiology) that diurnal animals might employ in order to adapt to an emerging overly illuminated-night urban environment. Expand
Avian circadian organization: A chorus of clocks
  • V. Cassone
  • Medicine, Biology
  • Frontiers in Neuroendocrinology
  • 2014
TLDR
Birds represent an excellent model for the role played by biological clocks in human neurobiology; unlike most rodent models, they are diurnal, they exhibit cognitively complex social interactions, and their circadian clocks are more sensitive to the hormone melatonin than are those of nocturnal rodents. Expand
Time's arrow flies like a bird: two paradoxes for avian circadian biology.
TLDR
Although the pineal gland has been shown to be critical for overt circadian behaviors, its role in annual cycles of reproductive function appears to be minimal and experimental analyses that address these paradoxes will shed light on the roles the biological clock play in birds and in vertebrates in general. Expand
BMAL1 but not CLOCK is associated with monochromatic green light-induced circadian rhythm of melatonin in chick pinealocytes
TLDR
The results suggested that BMAL1 rather than CLOCK plays a critical role in the regulation of monochromatic green light-induced melatonin rhythm synthesis in chicken pinealocytes. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 42 REFERENCES
Synchronization of Circadian Rhythms of House Sparrows by Oral Melatonin: Effects of Changing Period
TLDR
House sparrows whose circadian rhythms of locomotor activity and feeding had been abolished by pinealectomy were held in constant dim light and periodically exposed to melatonin in the drinking water and this data are consistent with the hypothesis that periodic exogenous melatonin can substitute for the endogenous plasma melatonin rhythm normally resulting from the periodic melatonin secretion by the pineal gland. Expand
Daily melatonin administration synchronizes circadian patterns of brain metabolism and behavior in pinealectomized house sparrows,Passer domesticus
TLDR
The data indicate that melatonin cycles are responsible for generating and/or driving a wide array of cerebral metabolic rhythms and that this influence is inhibitory. Expand
Encoding Time of Day and Time of Year by the Avian Circadian System
TLDR
There is increasing evidence that interactions between two or more components of the songbird circadian pacemaking system are essential to encode and store biologically meaningful information about time, and thus provide the basis for photoperiodic time measurements and after effects in birds. Expand
Photoperiodic regulation of the male house sparrow song control system: gonadal dependent and independent mechanisms.
TLDR
The data support the view that the song control system of the house sparrow is regulated by the photoperiodic timing system independently of gonadal influence, but that the gonads augment seasonal regulation of song, presumably via steroidal hormone secretion. Expand
Melatonin: Generation and Modulation of Avian Circadian Rhythms
TLDR
The properties of the circadian system may be adjusted to match the changing requirements for synchronization, and that this is achieved by altering the melatonin amplitude. Expand
Melatonin Binding in the House Sparrow Song Control System: Sexual Dimorphism and the Effect of Photoperiod
TLDR
The data point to a role for the circadian system of house sparrows in song control, but a specific role for melatonin in the daily or seasonal regulation of the song control system in birds, could not be determined. Expand
Photoperiod‐Dependent and ‐Independent Regulation of Melatonin Receptors in the Forebrain of Songbirds
TLDR
There was a striking downregulation of MelR in the song control nucleus Area X of intact and castrated photostimulated birds on long days compared to their photorefractory counterparts on the same long days and to the short‐day groups. Expand
Photoperiodic Regulation of Seasonal Breeding in Birds
  • P. Sharp
  • Biology, Medicine
  • Annals of the New York Academy of Sciences
  • 2005
TLDR
Analysis of the sites of expression of clock genes suggests that the biological clock for reproductive photoperiodic time measurement is in the medial basal hypothalamus, and photoinduced increase in T3 may stimulate the release of gonadotrophin‐releasing hormone through thyroid hormone receptors in the median eminence. Expand
The circadian timing system and reproduction in mammals
TLDR
The pineal melatonin rhythm appears to serve as an internal signal that represents day length and that is capable of regulating a variety of seasonal variations in physiology and behavior. Expand
Testis-dependent and -independent effects of photoperiod on volumes of song control nuclei in American tree sparrows (Spizella arborea)
TLDR
Data indicate that photoperiod has both testis-dependent and -independent effects on the volumes of song control nuclei. Expand
...
1
2
3
4
5
...