Photoperiod and Testicular Function in Phodopus Sungorus

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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 ...

Photoperiod and Testicular Function in Phodopus Sungorus 1987, Springer

ISBN-13: 9783540175834

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