NEUROENDOCRINE RESPONSE TO FEMALE OVULATORY ODORS IN COOPERATIVE BREEDERS

该子项目是利用NIH/NCRR资助的中心赠款提供的资源的许多研究子项目之一。子项目和研究者（PI）可能从另一个NIH来源获得主要资金，因此可以在其他CRISP条目中表示。所列机构为中心，不一定是研究者所在机构。以确定自然结合的一夫一妻制灵长类动物之间的性交流是如何发生的。 闻一闻雌性绒猴分泌的气味会刺激大脑中的唤醒中心。大脑的反应引发了男性的行为和荷尔蒙变化。在闻到唤醒信号的30分钟内，雄性绒猴的睾丸激素增加，但皮质醇没有增加。我们发现，有后代的配对雄性的反应最少，而没有后代的配对雄性的反应更多。最大的反应是单身男性。这些数据表明，雄性绒面猴的社会条件会影响他对性暗示的反应。雌性绢毛猴通常在前一个婴儿出生后两周内排卵并怀孕。在排卵前后检查男性每日尿激素表明，男性在女性排卵前和周期的卵泡期显示出睾酮、DHT和雌二醇水平升高。化学信号似乎在卵泡期释放，男性的反应是雄激素增加。雄激素刺激精子发生，使雄性做好交配的准备。本研究依赖于WNPRC Assay Services。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. To determine how sexual communication occurs between naturally bonded monogamous primates. Smelling isolated scent secretions from female marmosets will stimulate the arousal centers in the brain. The brain response initiates both behavioral and hormonal changes in males. Within 30 minutes of smelling the arousal signals, male marmosets show an increase in testosterone but not cortisol. We found that pairbonded males with offspring responded the least while paired males with no offspring responded more. The biggest responders were the single males. These data suggest that a male's social condition influences how he responds to sexually relevant cues.Male cotton-top tamarins anticipate their mate's ovulatory period. Female tamarins generally ovulate and conceive within two weeks following birth of previous infants. Examining male daily urinary hormones around the time of ovulation indicated that males show increased levels of testosterone, DHT and estradiol before the female ovulated and during the follicular phase of the cycle. Chemical cues appear to be released during the folliculat phase and the male responds with increased androgen. The androgens stimulate spermatogenises and prepares the male to optimize mating. This research relied on WNPRC Assay Services.