雄性而非雌性普通狨猴的育婴和性行为之间的行为竞争。

IF 2.4 4区医学 Q3 NEUROSCIENCES

Neuroscience Research Pub Date : 2025-04-25 DOI:10.1016/j.neures.2025.04.003

Takuma Kurachi , Kazutaka Shinozuka , Chihiro Yoshihara , Saori Yano-Nashimoto , Ayako Y. Murayama , Junichi Hata , Hideyuki Okano , Atsuko Saito , Kumi O. Kuroda

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引用次数: 0

摘要

性欲和亲子关系有时以两性二态的方式竞争，但其中的神经机制尚不清楚。在这里，我们表明，在家庭生活的灵长类动物普通狨猴中，父亲在产后交配期间暂时减少对婴儿的照顾，从而导致受孕，而母亲则不会。降钙素受体表达的MPOA亚区（cpoa）的功能抑制可大规模扰乱两性的婴儿护理，并消除雄性的性行为。在前脑内侧视前区（MPOA），婴儿护理诱导的神经元激活模式与雄性交配诱导的神经元激活模式不完全相同，但有重叠。这些数据表明，MPOA中婴儿护理和性行为所需的神经机制的共性可能导致父亲在这些行为之间的竞争。需要进一步的研究来确定调节狨猴这种现象的精确神经元机制。

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Behavioral competition between infant care and sexual behavior in male but not female common marmosets

Sexual desire and parenthood sometimes compete in a sexually dimorphic manner, but the neural mechanism for this remains to be clarified. Here we show that, in the family-living primate common marmoset, fathers temporarily reduce infant care during the postpartum mating period leading to conception, whereas mothers do not. Functional suppression of the calcitonin receptor-expressing MPOA subregion (cMPOA) scalably disrupts infant care in both sexes and abolishes sexual behavior in males. The neuronal activation pattern induced by infant care is not identical to, but overlaps with that induced by male mating in the medial preoptic area (MPOA) of the forebrain. These data suggest that the commonality of the neural mechanism required for infant care and sexual behavior in the MPOA may lead to competition between these behaviors in fathers. Further studies are needed to identify the precise neuronal mechanism regulating this phenomenon in marmosets.

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来源期刊

Neuroscience Research 医学-神经科学

CiteScore

5.60

自引率

3.40%

发文量

136

审稿时长

28 days

期刊介绍： The international journal publishing original full-length research articles, short communications, technical notes, and reviews on all aspects of neuroscience Neuroscience Research is an international journal for high quality articles in all branches of neuroscience, from the molecular to the behavioral levels. The journal is published in collaboration with the Japan Neuroscience Society and is open to all contributors in the world.