Food as a supplementary cue triggers seasonal changes in aggression, but not reproduction, in Siberian hamsters
نویسندگان
چکیده
منابع مشابه
Leptin mediates seasonal variation in some but not all symptoms of sickness in Siberian hamsters.
Many seasonally breeding species, including Siberian hamsters (Phodopus sungorus), exhibit seasonal variation in sickness responses. One hypothesis regarding the mechanism of this variation is that sickness intensity tracks an animal's energetic state, such that sickness is attenuated in the season that an animal has the lowest fat stores. Energetic state may be signaled via leptin, an adipose ...
متن کاملExperimentally induced sickness decreases food intake, but not hoarding, in Siberian hamsters (Phodopus sungorus).
A wide range of physiological and behavioral alterations occur in response to sickness. Sickness behaviors, rather than incidental by-products or side-effects of acute illness, serve as adaptive functional responses that allow animals to cope with a pathogenic challenge. Among the more salient sickness behaviors is a reduction in food intake; virtually all sick animals display marked decreases ...
متن کاملRole of DHEA in Mediating Seasonal Aggression in male Siberian Hamsters ( Phodopus sungorus )
As we start a new school year I would like to take this opportunity to welcome back the many students, staff, research associates and faculty associated with the Center for the Integrative Study of Animal Behavior (CISAB). To those of you who are new to CISAB and the Indiana University community, I would like to extend a special welcome to you and I would also like to express my excitement abou...
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 کاملHistaminergic regulation of seasonal metabolic rhythms in Siberian hamsters
We investigated whether histaminergic tone contributes to the seasonal catabolic state in Siberian hamsters by determining the effect of ablation of histaminergic neurons on food intake, metabolic rate and body weight. A ribosomal toxin (saporin) conjugated to orexin-B was infused into the ventral tuberomammillary region of the hypothalamus, since most histaminergic neurons express orexin recep...
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ژورنال
عنوان ژورنال: Physiology & Behavior
سال: 2016
ISSN: 0031-9384
DOI: 10.1016/j.physbeh.2016.09.023