Reference : Estradiol contributes to the postnatal demasculinization of female Japanese quail (Co...
Scientific journals : Article
Life sciences : Zoology
Social & behavioral sciences, psychology : Neurosciences & behavior
Estradiol contributes to the postnatal demasculinization of female Japanese quail (Coturnix coturnix japonica).
Balthazart, Jacques mailto [> > > >]
Schumacher, M. [ > > ]
Hormones and Behavior
Academic Press
Yes (verified by ORBi)
San Diego
[en] Age Factors ; Animals ; Castration ; Copulation ; Coturnix ; Estradiol/pharmacology ; Female ; Male ; Sex Differentiation/drug effects ; Sexual Behavior, Animal/drug effects ; Testosterone/pharmacology
[en] Two experiments were performed to characterize the process of postnatal demasculinization in Japanese quail. In the first experiment, it was shown that estradiol (E2) can complete female demasculinization during the first 4 weeks of life. By contrast, E2 did not demasculinize sexual behavior and cloacal gland in neonatally castrated males. Neonatally gonadectomized females preferentially performed mount attempts when tested in their home cage by comparison to a test arena. In Experiment 2, E2 Silastic implants (40-mm) maintained full copulatory behavior in castrated males but not in females. This large dose of E2 did not demasculinize adult sexually active birds (males or females) even if treatment lasted for 1 month. It is concluded that E2 can demasculinize sexual behavior only in females and only if treatment is performed in very young birds.

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78_1984 H&B JB_MS E2 demascPublisher postprint717.5 kBRequest copy

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