雄烯二酮可能会在雌性斑鬣狗中组织或激活性反转特征。
Androstenedione may organize or activate sex-reversed traits in female spotted hyenas.
作者信息
Glickman S E, Frank L G, Davidson J M, Smith E R, Siiteri P K
出版信息
Proc Natl Acad Sci U S A. 1987 May;84(10):3444-7. doi: 10.1073/pnas.84.10.3444.
Abstract
Spotted hyenas (Crocuta crocuta Erxleben) present a unique syndrome of reversal in behavioral and anatomical distinction between the sexes: females are heavier and more aggressive than males and dominant over them. The female's external genitalia include a false scrotum and a fully erectile pseudopenis through which mating and birth take place. Results of studies of circulating testosterone levels in wild spotted hyenas do not account for the "male-like" characteristics of the female. Androstenedione, however, is consistently higher in females than in males, particularly during early infancy. Experiments on rodents show that androstenedione can be a potent organizer of anatomical and behavioral differentiation. This study suggests that it may also produce the profound virilization of female spotted hyenas.
摘要
斑鬣狗（Crocuta crocuta Erxleben）呈现出一种独特的综合征，即两性在行为和解剖学特征上发生了逆转：雌性比雄性体型更重、更具攻击性，且在地位上占主导。雌性的外生殖器包括一个假阴囊和一个完全可勃起的假阴茎，交配和分娩都通过它进行。对野生斑鬣狗循环睾酮水平的研究结果无法解释雌性的“雄性化”特征。然而，雌性体内的雄烯二酮水平始终高于雄性，尤其是在幼年早期。对啮齿动物的实验表明，雄烯二酮可能是解剖学和行为分化的有力组织者。这项研究表明，它也可能导致雌性斑鬣狗出现深度雄性化。
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