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  • Title: [Hormones, reproductive behavior and fertility in male silver foxes].
    Author: Osadchuk LV.
    Journal: Fiziol Zh SSSR Im I M Sechenova; 1990 Apr; 76(4):446-52. PubMed ID: 2170171.
    Abstract:
    The relationships between gonadal and glucocorticoid hormones and reproductive behaviour were estimated in two groups of silver fox males classified as either low or high sex activity. Levels of testosterone and cortisol in peripheral plasma measured by radioimmunoassay did not differ between the groups. However, when receptive females were introduced to experimental males, levels of testosterone in plasma increased significantly only in the males with high sex activity within 1 hr after a test of sexual behaviour. Low sex activity of silver fox males correlated with an increased level of aggressive behaviour and decreased fertility.
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