Gonadal influences on sexual behavior in the male musk shrew (Suncus murinus) |
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| Authors: | E F Rissman |
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| Affiliation: | 1. Brain Function Research Group, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa;2. Université de Lyon, Laboratoire de Biométrie et Biologie Evolutive, CNRS-UMR 5558 Université Lyon 1, 43 Bvd 11 Novembre 1918, F-69622 Villeurbanne Cedex, France;3. Department of Life Sciences, University of Roehampton, Holybourne Avenue, London SW15 4JD, United Kingdom;4. Université de Lyon, Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS-UMR 5023 Université Lyon 1, 43 Bvd 11 Novembre 1918, F-69622 Villeurbanne Cedex, France |
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| Abstract: | In this series of experiments the hormonal bases for male copulatory behavior in the musk shrew (Suncus murinus) were examined. Male musk shrews failed to show copulatory behavior after castration. Testosterone replacement fully reinstated sexual behavior. Males castrated at birth, and tested as adults after receiving testosterone implants, did not show male-typical sexual behavior. It appears that the gonads are essential for the regulation of male sexual behavior in this primitive mammal. |
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