Do males time their mate-guarding effort with the fertile phase in order to secure fertilisation in Cayo Santiago rhesus macaques?
Do males time their mate-guarding effort with the fertile phase in order to secure fertilisation in Cayo Santiago rhesus macaques?
复制标题
DOI：
10.1016/j.yhbeh.2012.03.003
复制
发表时间：
2012-05
影响因子：
3.5
通讯作者：
Engelhardt, Antje
中科院分区：
文献类型：
--
作者：
Dubuc, Constance;Muniz, Laura;Heistermann, Michael;Widdig, Anja;Engelhardt, Antje
关键词：
与大多数哺乳动物物种相比，雌性的性活动并不局限于类人猿灵长类动物卵巢周期的可育期，而这一阶段长期以来一直被认为是为了隐藏雄性的排卵时间。现在人们普遍认为，雌性在排卵期仍然是最有吸引力的，这导致高级雄性在这一时期成功地保护了它们的配偶。虽然对表现出夸张的性肿胀（可育期的概率信号）的物种进行的研究通常支持这一假设，但其他研究也有不同的支持。在这里，我们调查了猕猴（Macaca mulatta）的高级雄性是否在雌性繁殖期设定了保护配偶的时间。在这个物种中，成年雌性不会表现出性肿胀，但会经历面部皮肤颜色的变化，这是雌性生殖状态的另一种依赖雌激素的分级信号。在两个交配季节，我们收集了一组圣地亚哥岛自由放养种群的行为、激素和遗传父系数据。我们的研究结果表明，排名靠前的雄性对配偶的保护并没有完全覆盖整个雌性的生育期，这种策略只占观察到的所有受精的30-40%。男性倾向于将保护配偶的时间延长到黄体期（受精的零概率），这反映了早期研究中男性对女性面部颜色的吸引力模式。这些发现表明，雄性可能对恒河猴中雌性可育期的确切时间知之甚少，这可能使雌性相对于其他类人猿灵长类动物获得更多的生殖控制权。
In contrast to most mammalian species, female sexual activity is not limited to the fertile phase of the ovarian cycle in anthropoid primates, which has long been proposed to conceal the timing of ovulation to males. It is now generally believed that females are still most attractive during the fertile phase, leading to high-ranking males successfully mate-guarding them specifically during this period. While studies conducted in species exhibiting exaggerated sexual swellings (probabilistic signal of the fertile phase) have generally supported this hypothesis, mixed support comes from others. Here, we investigated whether high-ranking males timed mate-guarding effort towards female fertile phases in rhesus macaques (Macaca mulatta). In this species, adult females do not exhibit sexual swellings, but undergo facial skin colour variation, an alternative oestrogens-dependent graded-signal of female reproductive status. We collected behavioural, hormonal and genetic paternity data during two mating seasons for one group of the free-ranging population of Cayo Santiago. Our results show that mate-guarding by top-ranking males did not completely cover the entire female fertile phase and that this tactic accounted for only 30-40% of all fertilisations observed. Males tended to prolong mate-guarding into the luteal phase (null probability of fertilisation), which mirrors the pattern of male attraction to female facial colour reported in an earlier study. These findings suggest that males may have limited knowledge regarding the exact timing of females’ fertile phase in rhesus macaques, which presumably allows females to gain more control over reproduction relative to other anthropoid primate species.
登录
查看更多内容
影响因子：
1.4
作者：
Carpenter, CR
通讯作者：
Carpenter, CR
影响因子：
2.5
作者：
Alberts, SC;Altmann, J;Wilson, ML
通讯作者：
Wilson, ML
影响因子：
--
作者：
Bercovitch, FB;Widdig, A;Krawczak, M
通讯作者：
Krawczak, M
影响因子：
2.3
作者：
CHAPAIS, B
通讯作者：
CHAPAIS, B
影响因子：
3.5
作者：
Deschner, T;Heistermann, M;Boesch, C
通讯作者：
Boesch, C