Hypothalamic, pituitary and gonadal hormone production in relation to nutrition in the male hyrax (Procavia capensis).
نویسندگان
چکیده
منابع مشابه
Elevated testosterone levels and social ranks in female rock hyrax.
In mammals, males maintain significantly higher testosterone (T, 'the male hormone') levels than females throughout the year and are typically dominant over females. Our study of the cooperatively breeding rock hyrax (Procavia capensis) demonstrated a distinct exception. In most hyrax social groups that we studied, adult females were at the highest social rank within the group and showed higher...
متن کاملSyntactic structure and geographical dialects in the songs of male rock hyraxes.
Few mammalian species produce vocalizations that are as richly structured as bird songs, and this greatly restricts the capacity for information transfer. Syntactically complex mammalian vocalizations have been previously studied only in primates, cetaceans and bats. We provide evidence of complex syntactic vocalizations in a small social mammal: the rock hyrax (Procavia capensis: Hyracoidea). ...
متن کاملChanges in the Hypothalamic-Pituitary-Gonadal Axis in Adult Male Rats Poisoned with Proteus and Biscaya Insecticides
Background: Insecticides may have negative effects on reproductive organs. Given the interaction between leptin and the hypothalamic-pituitary-gonadal (HPG) axis, we sought to investigate the changes in leptin and the HPG axis in adult male rats poisoned with Proteus and Biscaya insecticides. Methods: Our experimental subjects were 110 adult male Wistar rats (80–90 days of age; average weight=2...
متن کاملThe Role of Central Nervous System and Hypothalamic-Pituitary-Gonadal (HPG) Axis Changes in the Occurrence of Polycystic Ovary Syndrome: A Narrative Review Article
Background and Objectives: Polycystic ovary syndrome (PCOS) is a common reproductive endocrine disorder, affecting at least 10% of women in reproductive age. It is associated with hyperandrogenism, obesity, menstrual iregularity and infertility. There are several hypotheses regarding the metabolic, genetic, epigenetic, and environmental causes of the disease. Although the main cause of the dise...
متن کاملThe effect of 17 days exposure to static magnetic fields on the hypothalamic-pituitary-gonadal axis in the male rat
Power stations produce a range of magnetic fields more than 20 mT which are harmful to those working or living around them. Several investigators have reported an increased health risk due to exposure to electric and magnetic fields (EMF) at 50 and 60 Hz. Several studies have been reported especially with increased tumor incidence, effects on reproduction and development, and neural and behavio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of reproduction and fertility
دوره 47 2 شماره
صفحات -
تاریخ انتشار 1976