OESTRUS AND INDUCED OVULATION IN THE MEADOW VOLE, MICROTUS PENNSYLVANICUS
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چکیده
منابع مشابه
Prolactin counteracts effects of short day lengths on pelage growth in the meadow vole, Microtus pennsylvanicus.
To test whether growth of the winter coat in short day lengths is contingent on suppression of plasma prolactin (Prl) levels, female meadow voles (Microtus pennsylvanicus) were kept in short day lengths for 12 weeks and were injected daily with saline or Prl; long-day animals were treated with either the dopamine agonist, bromocryptine (bromo), bromo plus Prl, or saline. Prl treatment prevented...
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Particular features of the signaling characteristics of the scent marks of temperate-zone, seasonally breeding mammals may reflect differences in their reproductive state and, hence, be variable. Consequently, an individual's perception of self may depend more on the condition independent than on the condition-dependent signaling characteristics of the scent marks. Yet, we do not know whether a...
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In physiological research on natural populations, it is essential to understand the impact of capture-induced stress because of its numerous effects on many physiological processes. Our objective was to determine the extent to which the stress levels of meadow voles Microtus pennsylvanicus were affected by short-term responses to live trapping and how these were influenced by the amount of time...
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Female meadow voles (Microtus pennsylvanicus) are territorial during warm months but demonstrate social tolerance under low temperatures. In spring, females nest together and some pairs participate in communal nursing and rearing of young. Because communal nursing involves significant cooperation, selective pair-bonds may develop between 2 nestmates. Using a choice apparatus, the authors determ...
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Electrical stimulation of the anterior hypothalamus of the vole, Microtus agrestis, usually results in ovulation, whereas stimulation of areas in the posterior hypothalamus do not. Ovulation can also be elicited by injections of sheep median-eminence extracts, and by preparations ofsheep luteinizing hormone. Observations on the number of corpora lutea formed, and ripe Graafian follicles remaini...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1970
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0230341