Research on hormonal involvement in animals' preferences for mating or pairing with same- or other-sex partners has been among the topics featured in Hormones and Behavior over the years. In several species of non-pair-forming mammals, there is good evidence that the early sex steroid environment has an organizational effect on later sexual partner preference. Research with zebra finches, a pair-forming species, shows a likely early estrogenic organizational hormone effect on pairing partner preference, an effect that can also interact with the early social environment to determine adult pairing preference. Experiments with two amphibian and fish species suggest that activational hormone effects (effects of the hormone milieu in adulthood) may regulate sexual partner preference. As a complement to the research on hormonal involvement, a growing body of theoretical and empirical research addresses the possible adaptive functions of the same-sex sexual and pairing behavior observed in many wild animals. Such advances have important implications for conceptualizing neuroendocrine mechanisms of partner preferences.

中文翻译：

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鸟类和其他动物的性伴侣和伴侣伴侣偏爱。

多年来，有关激素参与动物偏好与同性或异性伴侣交配或配对的研究一直是“激素与行为”的主题之一。在几种不成对的哺乳动物中，有充分的证据表明，早期的类固醇环境对后期的性伴侣偏好有组织作用。对斑马雀（成对物种）的研究表明，可能早期雌激素对配对伴侣的偏好产生了组织激素效应，这种效应还可以与早期的社交环境相互作用，从而确定成年配对的偏好。对两种两栖动物和鱼类的实验表明，激活激素的作用（成年期激素环境的影响）可能会调节性伴侣的偏好。作为荷尔蒙受累研究的补充，越来越多的理论和经验研究致力于解决在许多野生动物中观察到的同性性行为和配对行为的可能适应功能。这些进展对伴侣偏好的神经内分泌机制的概念化具有重要意义。