Organizational actions of sex hormones on sexual partner preference
Organizational actions of sex hormones on sexual partner preference
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DOI：
10.1016/s0361-9230(97)00231-1
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发表时间：
1997-01-01
影响因子：
3.8
通讯作者：
Yang, S
中科院分区：
文献类型：
--
作者：
AdkinsRegan, E;Mansukhani, V;Yang, S
交配行为中的性二型性是性类固醇(性类固醇在早期发育过程中产生的永久性影响)的组织作用的结果。生殖成功不仅取决于交配行为，还取决于配偶选择，这通常也是性二态的，最明显的例子是性伴侣偏好：男性对女性性伴侣的偏好，女性对男性的偏好，组织激素行为对性伴侣偏好的性别分化负责吗？斑纹雀(Taeniopygia Guttata)是一个潜在的解决这个问题的有价值的物种，因为这种鸟形成了终生的社会一夫一妻制的纽带，在一个实验中，早期雌激素治疗(在出生后的头两周注射苯甲酸雌二醇EB)和幼年发育期间的中性住所都独立地导致在二选一测试中偏爱雌性而不是雄性，只有同时经历了EB治疗和中性生活的雌性在群体测试中比对照组更有可能与其他雌性配对。在第二个实验中，在第二个实验中，第一周注射雌激素合成抑制剂的雌性斑雀在两个选择的测试中更喜欢呆在雌性而不是雄性附近，与对照雌性不同，这些实验表明，性伴侣偏好可能是这种配对结合物种的组织激素作用的结果，可能的神经机制或部位可能不利于鸟类和哺乳动物的性伴侣偏好的激素组织，包括下丘脑前部/视前区，杏仁皮质，以及它的鸟类同源物弓形核，隔核和周围感觉突起。(C)1997年爱思唯尔科学公司。
Sexual dimorphism in copulatory behavior results from organizational actions of sex steroids (permanent effects of sex steroids occurring during early development). Reproductive success depends not only on copulatory behavior, but also on mate choice, which is often sexually dimorphic as well, The dearest example is sexual partner preference: the preference of males for female sexual partners and females for males, Are organizational hormone actions responsible for sexual differentiation of sexual partner preference? The zebra finch (Taeniopygia guttata) is a potentially valuable species for addressing this question, because the birds form life-long socially monogamous pair bonds, In one experiment, both early estrogen treatment (injection with estradiol benzoate-EB-for the first 2 weeks posthatch) and unisex housing during juvenile development independently resulted in a preference for females over males in two-choice tests, and only females that experienced both EB treatment and unisex living were more likely than controls to pair with other females in colony tests, In a second experiment, females injected with an estrogen synthesis inhibitor for the first week posthatch preferred to spend time near females instead of males in two-choice tests, unlike control females, These experiments suggest that sexual partner preference may result from organizational hormone actions in this pair-bonding species, Possible neural mechanisms or sites that could underly hormonal organization of sexual partner preference in birds and mammals include the anterior hypothalamic/preoptic area, the corticomedial amygdala, and its avian homologue nucleus taeniae of the archistriatum, the septum, and peripheral sensory processes. (C) 1997 Elsevier Science Inc.