RFRP Neurons – The Doorway to Understanding Seasonal Reproduction in Mammals
نویسندگان
چکیده
منابع مشابه
RFRP Neurons – The Doorway to Understanding Seasonal Reproduction in Mammals
Seasonal control of reproduction is critical for the perpetuation of species living in temperate zones that display major changes in climatic environment and availability of food resources. In mammals, seasonal cues are mainly provided by the annual change in the 24-h light/dark ratio (i.e., photoperiod), which is translated into the nocturnal production of the pineal hormone melatonin. The ann...
متن کاملClimate change and seasonal reproduction in mammals.
Seasonal reproduction is common among mammals at all latitudes, even in the deep tropics. This paper (i) discusses the neuroendocrine pathways via which foraging conditions and predictive cues such as photoperiod enforce seasonality, (ii) considers the kinds of seasonal challenges mammals actually face in natural habitats, and (iii) uses the information thus generated to suggest how seasonal re...
متن کاملRFRP neurons are critical gatekeepers for the photoperiodic control of reproduction
Seasonally breeding mammals rely on the photoperiodic signal to restrict their fertility to a certain time of the year. The photoperiodic information is translated in the brain via the pineal hormone melatonin, and it is now well-established that it is the variation in the duration of the nocturnal peak of melatonin which synchronizes reproduction with the seasons. The Syrian hamster is a long ...
متن کاملInformation theory and the neuropeptidergic regulation of seasonal reproduction in mammals and birds.
Seasonal breeding in the temperate zone is a dramatic example of a naturally occurring change in physiology and behaviour. Cues that predict periods of environmental amelioration favourable for breeding must be processed by the brain so that the appropriate responses in reproductive physiology can be implemented. The neural integration of several environmental cues converges on discrete hypotha...
متن کاملKisspeptins and RFRP-3 Act in Concert to Synchronize Rodent Reproduction with Seasons
Seasonal mammals use the photoperiodic variation in the nocturnal production of the pineal hormone melatonin to synchronize their reproductive activity with seasons. In rodents, the (SD) short day profile of melatonin secretion has long been proven to inhibit reproductive activity. Lately, we demonstrated that melatonin regulates the expression of the hypothalamic peptides kisspeptins (Kp) and ...
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ژورنال
عنوان ژورنال: Frontiers in Endocrinology
سال: 2016
ISSN: 1664-2392
DOI: 10.3389/fendo.2016.00036