Anti-fertility effect of levonorgestrel and quinestrol in Brandt's voles (Lasiopodomys brandtii )
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چکیده
منابع مشابه
Rank in a food competition test and humoral immune functions in male Brandt's voles (Lasiopodomys brandtii).
Social status can influence an animal's immune and reproductive functions, eventually leading to alterations in immunocompetence and reproductive success. Here, we report that rank assessed in a food competition test, considered as an index of social status, has significant influences on humoral immune functions in male Brandt's voles (Lasiopodomys brandtii) living in a group. Our data reveal a...
متن کاملDefensive responses of Brandt's voles (Lasiopodomys brandtii) to stored cat feces
Predator odors are non-intrusive natural stressors of high ethological relevance. Animals are daily challenged with stressors of varying intensity and it is essential for their survival to respond to a wide range of threats. Behavioral and hormonal responses and changes in the level of medial hypothalamic c-fos mRNA were examined in Brandt's voles (Lasiopodomys brandtii) exposed to the feces of...
متن کاملThermogenesis, food intake and serum leptin in cold-exposed lactating Brandt's voles Lasiopodomys brandtii.
Lactation is the most energetically expensive period for mammals and is associated with increased metabolism and energy intake, but decreased thermogenic capacity. It is well known that small mammals increase both food intake and thermogenesis in the cold. The present study aimed to examine whether Brandt's voles Lasiopodomys brandtii could adjust energy intake and thermogenesis to accommodate ...
متن کاملEffects of photoperiod history on body mass and energy metabolism in Brandt's voles (Lasiopodomys brandtii).
Many small mammals respond to seasonal changes in photoperiod via alterations in morphology, physiology and behaviour. In the present study, we tested the hypothesis that the preweaning (from embryo to weaning) photoperiod experience can affect subsequent development in terms of body mass and thermogenesis. Brandt's voles (Lasiopodomys brandtii) were gestated and reared to weaning under either ...
متن کاملHypothalamic neuropeptides, not leptin sensitivity, contributes to the hyperphagia in lactating Brandt's voles, Lasiopodomys brandtii.
Both pregnancy and lactation are associated with hyperphagia, and circulating leptin levels are elevated during pregnancy but decreased during lactation in Brandt's voles, Lasiopodomys brandtii. Previous findings suggest that impaired leptin sensitivity contributes to hyperphagia during pregnancy. The present study aimed to examine whether the decreased circulating leptin level and/or hypothala...
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ژورنال
عنوان ژورنال: Integrative Zoology
سال: 2007
ISSN: 1749-4877
DOI: 10.1111/j.1749-4877.2007.00059.x