Concealed fertility and extended female sexuality in a non-human primate (Macaca assamensis).
Concealed fertility and extended female sexuality in a non-human primate (Macaca assamensis).
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DOI：
10.1371/journal.pone.0023105
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Ostner J
中科院分区：
文献类型：
--
作者：
Fürtbauer I;Heistermann M;Schülke O;Ostner J
在许多生活在混合性别群体中的灵长类动物中，雌性表现出生育的概率线索，同时将父权集中在占主导地位的雄性身上，同时淡化父权，以此作为降低杀婴风险和增加雄性对后代照顾的一种手段。然而，少数物种缺乏这些线索，可能会对雄性隐藏生育能力；然而，到目前为止，人们对这些物种的交配模式及其潜在的邻近机制知之甚少。在这里，我们研究了野生猕猴(猕猴)的交配活动和与雌性生殖状态相关的性伴关系，这是一种雌性猕猴缺乏明显的肛门生殖器肿胀和交配叫声的物种。在两个交配季节(2837h)中，记录性行为和社会行为、性伴关系，并采集1178份粪便样本(n = ，15只雌性)，分析其孕激素浓度，以评估雌性生殖状态，确定排卵和受孕的时间。虽然大多数在第一个卵巢周期受孕，但雌性在整个4个月的交配季节都是性接受的，周期内交配频率在可育阶段没有增加。占统治地位的雄性并不垄断可育的交配，地位高的雄性的配偶关系持续很长时间，这并不完全与女性的生育阶段有关。此外，雌性交配是混杂的，但不是随机的，也就是说，对于几乎每一只雌性，交配都集中在某一只雄性身上，而不考虑雄性的等级。总而言之，我们证明了生育能力是不向男性透露的。隐藏的生育能力促进了极大的女性性欲，这可能会让女性在混杂的交配系统中创造出不同的交配关系。我们的研究为了解非人灵长类动物雌性性行为的可塑性提供了重要的新见解。
In numerous primates living in mixed-sex groups, females display probabilistic cues of fertility to simultaneously concentrate paternity to dominant males while diluting it amongst others as a means to reduce the risk of infanticide and to increase male care for offspring. A few species, however, lack these cues and potentially conceal fertility from males; yet, to date, little is known about mating patterns and their underlying proximate mechanisms in such species. Here, we investigated mating activity and sexual consortships relative to female reproductive state in wild Assamese macaques (Macaca assamensis), a species where females lack prominent anogenital swellings and copulation calls. During two mating seasons (2837 contact hours) we recorded sexual and social behaviors, sexual consortships, and collected 1178 fecal samples (n = 15 females) which were analyzed for progestogen concentrations to assess female reproductive state and to determine the timing of ovulation and conception. Although mostly conceiving in their first ovarian cycle, females were sexually receptive throughout the entire 4-month mating season, and within-cycle mating frequencies were not increased during fertile phases. Dominant males did not monopolize fertile matings, and consortships by high-ranking males lasted for long periods, which were not exclusively linked to female fertile phases. Furthermore, females copulated promiscuously but not randomly, i.e. for almost every female, matings were concentrated to a certain male, irrespective of male rank. Collectively, we demonstrate that fertility is undisclosed to males. The extreme extended female sexuality facilitated by concealed fertility may allow females to create differentiated mating relationships within a promiscuous mating system. Our study provides important new insight into the plasticity of female sexuality in non-human primates.
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影响因子：
3.5
作者：
Carosi, M;Heistermann, M;Visalberghi, E
通讯作者：
Visalberghi, E
DOI：
10.1098/rspb.2007.0926
发表时间：
2007-11-22
影响因子：
4.7
作者：
Cornell, Stephen J.;Tregenza, Tom
通讯作者：
Tregenza, Tom
影响因子：
2.3
作者：
Emery, MA;Whitten, PL
通讯作者：
Whitten, PL
影响因子：
3.8
作者：
BATEMAN, AJ
通讯作者：
BATEMAN, AJ
影响因子：
2.5
作者：
Engelhardt, A;Pfeifer, AB;Hodges, JK
通讯作者：
Hodges, JK