Hashimoto Chie, Furuichi Takeshi
Primate Research Institute, Kyoto University, Kanrin, Inuyama, Aichi, 484-8506, Japan.
Primates. 2006 Jan;47(1):51-5. doi: 10.1007/s10329-005-0144-x. Epub 2005 Sep 16.
We compared sex differences in behaviors leading to copulation of chimpanzees (Pan troglodytes) in the Kalinzu Forest, Uganda with those of bonobos (Pan paniscus) at Wamba, D.R. Congo, using the same definition. Female chimpanzees were more likely to initiate copulation than female bonobos. While most of copulations (96%) were initiated by males in bonobos, among chimpanzees only 63% of copulations were initiated by males. Female bonobos initiated an interaction leading to copulation when males approached them within a short distance. On the other hand, both male and female chimpanzees initiated behavior at a longer distance. Higher proceptivity and a higher copulation rate during the maximal swelling period of female chimpanzees might suggest that they gain greater benefits from a high frequency of copulations than do female bonobos.
我们使用相同的定义，比较了乌干达卡林祖森林中黑猩猩（Pan troglodytes）与刚果民主共和国万巴的倭黑猩猩（Pan paniscus）在导致交配行为上的性别差异。雌性黑猩猩比雌性倭黑猩猩更有可能发起交配。在倭黑猩猩中，大多数交配行为（96%）由雄性发起，而在黑猩猩中，只有63%的交配行为由雄性发起。当雄性倭黑猩猩在短距离内接近雌性时，雌性倭黑猩猩会发起导致交配的互动。另一方面，雄性和雌性黑猩猩都会在更远的距离发起行为。雌性黑猩猩在最大肿胀期更高的性接受度和更高的交配率可能表明，与雌性倭黑猩猩相比，它们从高频率交配中获得了更大的益处。
