Male dominance rank, female mate choice and male mating and reproductive success in captive chimpanzees
Male dominance rank, female mate choice and male mating and reproductive success in captive chimpanzees
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DOI：
10.1007/s10764-005-2929-6
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发表时间：
2005-04-01
影响因子：
2.5
通讯作者：
Heistermann, M
中科院分区：
文献类型：
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作者：
Klinkova, E;Hodges, JK;Heistermann, M
雄性脊椎动物的交配和繁殖成功主要取决于雄性间的竞争和雌性的择偶。然而，它们的相对重要性仍然知之甚少。我们研究了雄性优势等级-男性竞争能力的正式指标-女性择偶，和男性交配成功率之间的相互关系，在一个多雌多雄的圈养黑猩猩组。此外，我们研究了男性的优势地位和生殖成功之间的关系，在同一个圈养种群的遗传亲子关系分析超过13年的时间。我们将社会性行为的频率与女性肛门生殖器肿胀期和女性生育期相关，这是通过尿液和粪便中的孕激素分析确定的。在两性的行为率增加，增加强度的女性肿胀，但他们不受生育期的时间。男性交配成功率明显与男性的统治地位，高级别的男性进行绝大多数的交配。这主要是由于在女性肛门生殖器发育良好的时期，男性的求偶行为和男性间的攻击行为的等级相关率。虽然女性征求交配主要是从高级别的男性，从而表达了择偶的基础上排名，他们的整体贡献，在启动交配，从而影响男性交配成功率是低的。来自总包含4个成年雄性的种群的父系数据显示，阿尔法雄性产生了大多数（65%）后代。我们的结论是，男性的优势地位是一个重要的决定因素，男性交配和繁殖成功的圈养（大概是野生）黑猩猩和女性择偶是次要的重要性，在调制男性生殖结果。
Mating and consequently reproductive success in male vertebrates are predominantly determined by intermale competition and female mate choice. Their relative importance however, is still poorly understood. We investigated the interrelationship between male dominance rank - a formal indicator of male competitive ability - female mate choice, and male mating success in a multimale-multifemale group of captive chimpanzees. In addition, we examined the relationship between male dominance rank and reproductive success determined by genetic paternity analysis over a 13-yr period in the same captive population. We related the frequencies of sociosexual behaviors to the female anogenital swelling stage and female fertile phase as determined by urinary and fecal progestogen analysis. Rates of behaviors in both sexes increased with increasing intensity of female swelling, but they were not influenced by the timing of the fertile phase. Male mating success was clearly related to male dominance rank, with high-ranking males performing the overwhelming majority of copulations. This was mainly due to both rank-related rates of male soliciting behavior and intermale aggressiveness during the period of well-developed female anogenital swelling. Although females solicited copulations mainly from the high-ranking males and thus expressed a mate choice based on rank, their overall contribution in initiating copulations and thus influencing male mating success was low. The data on paternity from the population, which always contained 4 adult males, revealed that alpha-males sired the majority (65%) of offspring. We conclude, that male dominance rank is an important determinant of male mating and reproductive success in captive (and presumably wild) chimpanzees and that female mate choice is of minor importance in modulating male reproductive outcome.