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Biology of Reproduction, Vol 18, 379-383, Copyright © 1978 by Society for the Study of Reproduction

Effects of Hysterectomy on Luteal Function in the Western Spotted Skunk (Spilogale putorius latifrons)

RODNEY A. MEAD 1, and ANN SWANNACK 1

1 Department of Biological Sciences, University of Idaho, Moscow, Idaho 83843


Fifteen pregnant spotted skunks were randomly assigned to 1 of 3 groups: (Group I) intact controls; (Group II) hysterectomized during the prolonged preimplantation period and (Group III) hysterectomized within 1-4 days after nidation. Blood samples were obtained at various intervals after hysterectomy and assayed for progesterone by radioimmunoassay to determine the effects of hysterectomy on luteal function. Hysterectomy had no significant effect on luteal function and presumably luteal maintenance, as indicated by changes in plasma progesterone levels. These results indicate that neither embryos nor placentae were an essential source of luteotropin and that the uterus played no significant role in regulating the life span of the corpora lutea of pregnancy in the spotted skunk.

Note:
ACKNOWLEDGMENTS We would like to thank Ms. Debbie Amos and Dale Everson for their help with the statistical analyses. This investigation was supported by a research grant HD-06556 from the National Institute of Child Health and Human Development.

Submitted on July 29, 1977
Accepted on September 20, 1977




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Copyright © 1978 by the Society for the Study of Reproduction.