The circadian rhythm of thermoregulation in Japanese quail: I. Role of the eyes and pineal
H Underwood - Journal of Comparative Physiology A, 1994 - Springer
… The data support the hypothesis that the eyes are the loci of circadian pacemakers in quail
that act, via both neural and hormonal outputs, to preserve the integrity of (self-sustaining or …
that act, via both neural and hormonal outputs, to preserve the integrity of (self-sustaining or …
[PDF][PDF] Does a biological clock reside in the eye of quail?
H Underwood, T Siopes… - Journal of Biological …, 1988 - journals.sagepub.com
… circadian pacemakers, each with an exclusive photic input from one eye, drive the ocular …
in the present study would envisage a light-entrainable circadian pacemaker residing …
in the present study would envisage a light-entrainable circadian pacemaker residing …
Melatonin rhythms in quail: regulation by photoperiod and circadian pacemakers
H Underwood, T Siopes - Journal of pineal research, 1985 - Wiley Online Library
… The objectives of the present study were: (1) to examine the pineal, ocular, and blood
melatonin rhythms in Japanese quail (Coturnix coturnix juponica) under both long and short …
melatonin rhythms in Japanese quail (Coturnix coturnix juponica) under both long and short …
[PDF][PDF] The circadian rhythm of thermoregulation in Japanese quail. II. Multioscillator control
H Underwood, K Edmonds - Journal of Biological Rhythms, 1995 - journals.sagepub.com
… This suggests that either the rhythms are all driven by one circadian pacemaker or if more …
mus, and the eyes of nonmammalian vertebrates are sites of circadian clocks, at least in some …
mus, and the eyes of nonmammalian vertebrates are sites of circadian clocks, at least in some …
Circadian organization in Japanese quali
H Underwood, T Siopes - Journal of Experimental Zoology, 1984 - Wiley Online Library
… the eyes must act as major components of the quail's circadian … that the eyes play a major
role within the circadian system … circadian pacemakers may reside within the eyes of quail. The …
role within the circadian system … circadian pacemakers may reside within the eyes of quail. The …
Melatonin rhythms in the eyes, pineal bodies, and blood of Japanese quail (Coturnix coturnix japonica)
H Underwood, S Binkley, T Siopes, K Mosher - General and comparative …, 1984 - Elsevier
… The diurnal pattern of melatonin in the pineal bodies, eyes, … study with quail clearly show
that both the pineal and the eyes … rhythm in blood melatonin; the eyes contribute about 33% of …
that both the pineal and the eyes … rhythm in blood melatonin; the eyes contribute about 33% of …
Circadian organization and the role of the pineal in birds
H Underwood, CT Steele… - Microscopy research and …, 2001 - Wiley Online Library
… system; for example, in the house sparrow pacemakers in the pineal … circadian pacemakers
in both the pineal and eyes play a significant role, and in Japanese quail ocular pacemakers …
in both the pineal and eyes play a significant role, and in Japanese quail ocular pacemakers …
[PDF][PDF] Circadian ovulatory rhythms in Japanese quail: role of ocular and extraocular pacemakers
BD Zivkovic, H Underwood… - Journal of Biological …, 2000 - journals.sagepub.com
… We propose that in the Japanese quail, one functional set of oscillators (ocular pacemakers
along with the subset of central oscillators that they drive) is entrained by the LD cycle, …
along with the subset of central oscillators that they drive) is entrained by the LD cycle, …
[PDF][PDF] Melatonin does not link the eyes to the rest of the circadian system in quail: a neural pathway is involved
H Underwood, RK Barrett… - Journal of Biological …, 1990 - journals.sagepub.com
… Whether or not the eyes are the loci of circadian pacemakers is an important question. A …
a circadian clock is present in the eye of quail. For example, ONX (which deprives the eyes of …
a circadian clock is present in the eye of quail. For example, ONX (which deprives the eyes of …
Ocular clocks are tightly coupled and act as pacemakers in the circadian system of Japanese quail
…, T Siopes, H Underwood - American Journal of …, 2003 - journals.physiology.org
… Furthermore, we hypothesized that these ocular clocks are pacemakers because eye … If
the eyes are indeed acting as pacemakers, we predicted that the two ocular pacemakers in an …
the eyes are indeed acting as pacemakers, we predicted that the two ocular pacemakers in an …
[PDF][PDF] The quail's eye: a biological clock
H Underwood, RK Barrett… - Journal of Biological …, 1990 - journals.sagepub.com
… eyes themselves may be the site of circadian clocks that act as pacemakers within the quail’s
multioscillator circadian … Removal of these ocular pacemakers, then, would disrupt the rest …
multioscillator circadian … Removal of these ocular pacemakers, then, would disrupt the rest …
Eye and gonad: role in the dual-oscillator circadian system of female Japanese quail
H Underwood, T Siopes… - American Journal of …, 1997 - journals.physiology.org
… of eye removal or eye patching on the circadian system of quail … that the eyes are the sites
of circadian pacemakers, … that is, the eyes are merely acting as photoreceptors for pacemakers …
of circadian pacemakers, … that is, the eyes are merely acting as photoreceptors for pacemakers …
[PDF][PDF] The circadian rhythm of thermoregulation in Japanese quail: III. Effects of melatonin administration
H Underwood, K Edmonds - Journal of Biological Rhythms, 1995 - journals.sagepub.com
… circadian pacemakers in the eyes of Japanese quail are coupled to the rest of the circadian
… body temperature and activity rhythms of quail were tested to determine whether melatonin …
… body temperature and activity rhythms of quail were tested to determine whether melatonin …
Multiphotoreceptor and multioscillator system in avian circadian organization
T Oishi, M Yamao, C Kondo, Y Haida… - Microscopy …, 2001 - Wiley Online Library
… We demonstrated that this circadian system was still working in quail after ocular … in linking
pacemakers in the eyes to the rest of the circadian system in female quail (Underwood and …
pacemakers in the eyes to the rest of the circadian system in female quail (Underwood and …
Time keeping by the quail's eye: circadian regulation of melatonin production
CT Steele, G Tosini, T Siopes, H Underwood - General and comparative …, 2006 - Elsevier
… We sought to strengthen the hypothesis that the eyes are the loci of circadian pacemakers,
and that melatonin output is involved, by examining melatonin secretion in cultured quail …
and that melatonin output is involved, by examining melatonin secretion in cultured quail …
Dopamine mediates circadian rhythms of rod–cone dominance in the Japanese quail retina
MK Manglapus, PM Iuvone, H Underwood… - Journal of …, 1999 - Soc Neuroscience
… eye with clear silicone to prevent drying (Dow Corning) and inserted a second electrode into
the other eye … synthesis of dopamine is controlled by an endogenous circadian pacemaker. …
the other eye … synthesis of dopamine is controlled by an endogenous circadian pacemaker. …
Molecular analysis of avian circadian clock genes
T Yoshimura, Y Suzuki, E Makino, T Suzuki… - Molecular brain …, 2000 - Elsevier
… Here, we report Clock and Period homologs in Japanese quail which offer a new step for …
of circadian rhythms in female quail. Underwood et al. have demonstrated that eye patching in …
of circadian rhythms in female quail. Underwood et al. have demonstrated that eye patching in …
The circadian nature of melatonin secretion in Japanese quail (Coturnix coturnix japonica)
V Kumar, BK Follett - Journal of pineal research, 1993 - Wiley Online Library
… of circadian and photoperiodic systems [Underwood and … from both the pineal and the eyes,
the former accounting for … and to entraining effects on circadian pacemaker(s) regulating its …
the former accounting for … and to entraining effects on circadian pacemaker(s) regulating its …
Retinally perceived light can entrain the pineal melatonin rhythm in Japanese quail
RK Barrett, H Underwood - Brain research, 1991 - Elsevier
… as a pacemaker within a multiosciUator circadian system. … eye of the Japanese quail contains
a circadian clock that is capable of driving the OMR, and probably other rhythms in the eye …
a circadian clock that is capable of driving the OMR, and probably other rhythms in the eye …
Pineal melatonin secretion, but not ocular melatonin secretion, is sufficient to maintain normal immune responses in Japanese quail (Coturnix coturnix japonica)
…, TD Siopes, CT Steele, H Underwood - General and comparative …, 2002 - Elsevier
… the present study, could have modified a diurnal rhythm of immunity. However, … circadian
rhythms in Japanese quail, such as those of locomotor activity or body temperature (Underwood…
rhythms in Japanese quail, such as those of locomotor activity or body temperature (Underwood…