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by Martin Bergmann

Download Photoperiod and Testicular Function in Phodopus sungorus (Advances in Anatomy, Embryology and Cell Biology) fb2, epub

ISBN: 3540175830
Author: Martin Bergmann
Language: English
Publisher: Springer; 1 edition (June 15, 1987)
Pages: 76
Category: Medicine & Health Sciences
Subcategory: Other
Rating: 4.8
Votes: 800
Size Fb2: 1202 kb
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Advances in Anatomy, Embryology and Cell Biology. Many mammalian species living at medium or higher latitudes show marked annual cycles in various morphological and functional properties

Advances in Anatomy, Embryology and Cell Biology. Photoperiod and Testicular Function in Phodopus sungorus. Authors: Bergmann, Martin. Many mammalian species living at medium or higher latitudes show marked annual cycles in various morphological and functional properties. There is a clear cycle of the reproductive activity ranging from a fertile to an infertile state in both the male and female. Such an annual periodicity can be regarded as an adaptation to seasonal changes of environmental conditions such as cli­ mate and nutrition, ensuring that birth and development of the litter are re­ stricted to a favorable season.

cle{iodAT, title {Photoperiod and testicular function in Phodopus sungorus. author {Michael Bergmann}, journal {Advances in anatomy, embryology, and cell biology}, year {1987}, volume {105}, pages {. 1-76 } }. Michael Bergmann. Published in Advances in anatomy, embryology, and cell biology 1987. 2 Material and Methods. . Groups of Animals.

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Home Martin Bergmann Photoperiod and Testicular Function in Phodopus sungorus .Such a seasonal cycle of reproductive activity was found in species from all vertebrate groups (. birds, see Hoffmann 1981; Breucker 1982; reptiles, amphibians, and teleosts, see Hoffmann 1981).

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Advances in Anatomy, Embryology & Cell Biology. By (author) Martin Bergmann. AbeBooks may have this title (opens in new window).

Major advances were associated with the discovery of new methods

The multi-perspective presentation of morphological aspects of basic biological phenomen in the human constitutes the main focus of the series. Major advances were associated with the discovery of new methods. These are summarized first. For example, NRG1 has essential functions in the development of neural crest cells and some of their major derivatives, like Schwann cells and sympathetic neurons.

Also known as. English. Advances in Anatomy, Embryology and Cell Biology. stated in. Europe PubMed Central.

Many mammalian species living at medium or higher latitudes show marked annual cycles in various morphological and functional properties.

Biochemistry, Genetics and Molecular Biology Cell Biology Developmental Biology. Medicine Anatomy Embryology Medicine (miscellaneous).

Many mammalian species living at medium or higher latitudes show marked annual cycles in various morphological and functional properties. There is a clear cycle of the reproductive activity ranging from a fertile to an infertile state in both the male and female. Such an annual periodicity can be regarded as an adaptation to seasonal changes of environmental conditions such as cli­ mate and nutrition, ensuring that birth and development of the litter are re­ stricted to a favorable season. These annual cycles consist of cyclic changes of exocrine and endocrine gonadal function, in the hormone-dependent organs (accessory glands, etc.) and in the hormonal hypothalamic-pituitary-gonadal system (for literature, see Hoffmann 1981). Such a seasonal cycle of reproductive activity was found in species from all vertebrate groups (i.e., birds, see Hoffmann 1981; Breucker 1982; reptiles, amphibians, and teleosts, see Hoffmann 1981). In those primate species of the Macaca family which are seasonal breeders (Zamboni et al. 1974), it was demonstrated by Richter et al. (1978) and Wickings and Nieschlag (1980) that these cycles are also evident under constant laboratory conditions, suggest­ ing that these cycles are based upon endogenous rhythms which are modulated and synchronized in the natural habitat by exogenous factors.

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