Journal ArticleDOI
Influence of temporal relationships between serotonergic and dopaminergic precursors on the regulation of gonadal development in birds.
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TLDR
Results are in agreement with the internal coincidence model of photoperiodic time measurement and indicate that birds can detect specific phase relationship between the two neural oscillations for their reproductive regulations and circadian organization is intricately involved in the regulation of seasonality.About:
This article is published in General and Comparative Endocrinology.The article was published on 2013-09-01. It has received 8 citations till now.read more
Citations
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Journal ArticleDOI
Difference in control between spring and autumn migration in birds: insight from seasonal changes in hypothalamic gene expression in captive buntings
TL;DR: Redheaded buntings are tested for the first time seasonal transition in hypothalamic gene expressions, and differences in regulatory strategies at the transcriptional level for spring and autumn migrations in songbirds are suggested.
Journal ArticleDOI
Temporal Expression of c-fos and Genes Coding for Neuropeptides and Enzymes of Amino Acid and Amine Neurotransmitter Biosynthesis in Retina, Pineal and Hypothalamus of a Migratory Songbird: Evidence for Circadian Rhythm-Dependent Seasonal Responses.
TL;DR: Results underscore that circadian rhythm of peptide, amino acid and amine neurotransmitter biosynthesis in CPS plays a critical role in the photoperiodic regulation of seasonal states in birds.
Journal ArticleDOI
Apoptosis-mediated testicular alteration in Japanese quail (Coturnix coturnix japonica) in response to temporal phase relation of serotonergic and dopaminergic oscillations
TL;DR: It is concluded that specific phase relation of neural oscillations may modulate the local testicular GnRH-GnIH system and alter the apoptotic mechanism in quail testes, and the physiological effects of time-dependent drug delivery, including the specific time intervals between two drugs.
Journal ArticleDOI
Specific neural phase relation of serotonin and dopamine modulate the testicular activity in Japanese quail.
TL;DR: It can be concluded that 12‐hr quail showed significantly increased testicular activity and steroidogenesis while opposite pattern was observed in 8‐hour quail.
Journal ArticleDOI
Daytime light spectrum affects photoperiodic induction of vernal response in obligate spring migrants.
TL;DR: In this article, the authors investigated the molecular underpinnings of wavelength-dependent photoperiodic induction in migratory redheaded buntings transferred to 13h long days in neutral (white), blue, green, and red light conditions.
References
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Journal ArticleDOI
The Entrainment of Circadian Oscillations by Light and Their Role as Photoperiodic Clocks
TL;DR: In this paper, a "coincidence model" for photoperiodic induction is proposed, which is essentially Bunning's original scheme given in somewhat more explicit terms, and it may yet prove true that the coincidence-device type of model will prove inadequate.
Journal ArticleDOI
Photorefractoriness in birds and comparison with mammals
Journal ArticleDOI
Effects of prolactin and ergot alkaloids on the tubero-infundibular dopamine (DA) neurons.
T. Hökfelt,Kjell Fuxe +1 more
TL;DR: Using the Falck-Hillarp fluorescence technique, the effect of various hypophyseal hormones on the rate of depletion of catecholamines from certain central neuron systems was investigated.
Journal ArticleDOI
Light and other environmental factors affecting avian reproduction.
Donald S. Farner,B. K. Follett +1 more
Journal ArticleDOI
Rate of testicular maturation, in relation to gonadotrophin and testosterone levels, in quail exposed to various artificial photoperiods and to natural daylengths
B. K. Follett,S. L. Maung +1 more
TL;DR: The rate of photoperiodically induced testicular growth was proportional to the levels of FSH, and possibly also testosterone, in the circulation, and the hormone profiles offer an explanation for the differential rates oftesticular growth.
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