NEUROENDOCRINE RESPONSE TO FEMALE OVULATORY ODORS IN COOPERATIVE BREEDERS

这个子项目是利用由NIH/NCRR资助的中心拨款提供的资源的许多研究子项目之一。子项目和调查员(PI)可能从另一个NIH来源获得了主要资金，因此可能会出现在其他CRISE条目中。列出的机构是针对中心的，而不一定是针对调查员的机构。以确定自然结合的一夫一妻制灵长类之间如何发生性行为交流。闻到雌性绒猴的独立气味分泌物，会刺激大脑中的兴奋中心。大脑的反应会引发男性的行为和荷尔蒙变化。在闻到唤醒信号的30分钟内，雄性绒猴的睾丸素水平会增加，但皮质醇水平不会增加。我们发现，有后代的配对雄性反应最小，而没有后代的配对雄性反应更多。对此反应最大的是单身男性。这些数据表明，男性的社交状况会影响他对与性有关的暗示的反应。雄棉顶罗望鱼预测其配偶的排卵期。雌性罗望鱼一般在以前的婴儿出生后两周内排卵和受孕。检查排卵前后男性每日的尿液激素发现，在女性排卵前和周期的卵泡期，男性的睾酮、二羟色胺和雌二醇水平升高。化学物质似乎是在卵泡期释放出来的，雄性会以增加的雄激素来回应。雄激素刺激精子生成，并为雄性优化交配做好准备。这项研究依赖于WNPRC化验服务。

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.