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Androgens and reproductive behavior in ovariectomized ring doves.

E F Rissman, E Adkins-Regan

    Physiology & Behavior
    |April 1, 1984
    PubMed
    Summary

    Testosterone propionate (TP) and 5 alpha-dihydrotestosterone propionate (DHTP) activated wingflipping in female ring doves. Estrogen aromatization is not involved, suggesting wingflipping is less hormone-specific in females than males.

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    Area of Science:

    • Behavioral Endocrinology
    • Animal Behavior
    • Reproductive Biology

    Background:

    • Hormonal influences on avian reproductive behaviors are crucial for understanding species-specific communication.
    • Ring doves (Streptopelia risoria) exhibit distinct courtship displays, including wingflipping, influenced by androgens.

    Purpose of the Study:

    • To investigate the role of androgens, specifically testosterone propionate (TP) and 5 alpha-dihydrotestosterone propionate (DHTP), in activating wingflipping behavior in ovariectomized female ring doves.
    • To determine if the aromatization of testosterone to estrogen is a necessary pathway for inducing wingflipping in female doves.

    Main Methods:

    • Ovariectomized female ring doves were subcutaneously implanted with silastic capsules containing either TP, DHTP, or cholesterol (control).
    • Following implantation, females were paired daily with intact males for one hour.
    • Behavioral observations, including wingflipping and receptive crouching, were conducted eleven days post-implantation.

    Main Results:

    • Both testosterone propionate (TP) and 5 alpha-dihydrotestosterone propionate (DHTP) significantly activated wingflipping behavior in the female ring doves.
    • No receptive crouching behavior was observed in any of the hormone-treated or control females.
    • The results indicate that the conversion of testosterone to estrogen (aromatization) is not required for the expression of wingflipping in this model.

    Conclusions:

    • Wingflipping behavior in female ring doves can be induced by direct androgenic action, independent of estrogen conversion.
    • These findings suggest that the hormonal mechanisms underlying wingflipping may be less specific in females compared to males.
    • Androgens play a direct role in the expression of specific courtship behaviors in female birds.

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