Phodopus campbelli detect reduced photoperiod during development but, unlike Phodopus sungorus, retain functional reproductive physiology
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چکیده
منابع مشابه
Photoperiod and testicular function in Phodopus sungorus.
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متن کاملPhotoperiod and food restriction differentially affect reproductive and immune responses in Siberian hamsters Phodopus sungorus
1. Organisms must contend with seasonal fluctuations in energy availability. To maintain a positive energy balance year-round, a number of adaptations have evolved including seasonal changes in reproduction, energetics and immunity. Photoperiod is the primary environmental signal most animals use to predict seasonal events. Despite the established link between energetics and immune function, li...
متن کاملPhotoperiod and testosterone interact to drive seasonal changes in kisspeptin expression in Siberian hamsters (Phodopus sungorus).
Kisspeptin, a neuropeptide product of the KiSS-1 gene, has recently been implicated in the regulation of seasonal breeding in a number of species, including Siberian hamsters. In this species, kisspeptin expression is reduced in the anteroventral periventricular nucleus (AVPV) following exposure to inhibitory day lengths, and exogenous kisspeptin activates the reproductive neuroendocrine axis o...
متن کاملPerinatal photoperiod organizes adult immune responses in Siberian hamsters (Phodopus sungorus).
Individuals of many nontropical rodent species display reproductive, immunological, and somatic responses to day length. In general, short day (SD) lengths inhibit reproduction and enhance immune function in the laboratory when all other conditions are held constant. Most studies to date have focused on seasonal variation in immune function in adulthood. However, perinatal photoperiods also com...
متن کاملPhotoperiod-dependent response to androgen in the medial amygdala of the Siberian hamster, Phodopus sungorus.
The medial nucleus of the amygdala (MeA) is a steroid-sensitive region that has been implicated in the expression of behaviors such as mating and aggression. The male Siberian hamster (Phodopus sungorus) uses light cues to regulate its reproductive neuroendocrine system, reducing androgen synthesis in the autumn and increasing it in the spring. There is also evidence that short photoperiods red...
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ژورنال
عنوان ژورنال: Reproduction
سال: 2006
ISSN: 1470-1626,1741-7899
DOI: 10.1530/rep.1.00019