Effect of mating on plasma levels of LH and progesterone in montane voles (Microtus montanus)

in Reproduction
Authors:
G. D. Gray
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H. N. Davis
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A. McM. Kenney
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D. A. Dewsbury
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Department of Physiology, Stanford University, Stanford, California 94305, and * Department of Psychology, University of Florida, Gainsville, Florida 32611, U.S.A.

The effects of mating and other stimuli on ovulation have been reported for montane voles, Microtus montanus (Cross, 1972; Gray, Davis, Zerylnick & Dewsbury, 1974; Davis, Gray, Zerylnick & Dewsbury, 1974). These voles are induced ovulators, but no data are available on the precise hormonal changes involved. In the present study, plasma levels of LH and progesterone were measured in montane voles during various reproductive states.

All voles were laboratory bred and were 4-6 months of age. They were housed individually as adults in plastic tub cages (29 × 19 × 13 cm), with San-i-cel (Paxton Processing Co., Paxton, Illinois) and Nestlets (Ancare Corp., Manhasset, New York) provided for bedding. Purina Rabbit Chow (Ralston Purina Co., St Louis, Missouri) and water were available at all times, and fresh lettuce was provided

 

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