Abstract: After recording the sexual behavior among the wild Sichuan snob-nosed monkey ( Rhinopithecus roxellana) with digital video cameras from July 2003 to December 2003 in Qinling mountains, we analysed the available image data with“The Observer 610”animal behaviour analysis system which published by NOLDUS company. We found that all the copulations (N = 285) were performed in a dorsa-ventral posture. Both single-clasp copulations (54.57%) and double-clasp copulations (45.43%) were observed in our study. Double-clasp copulation gesture was observed for the first time and this gesture was not found in previous studies in captive populations. In comparison to the data from captive populations, we suggest that the intromission process can be divided into two phases: intromission prophase and the intromission anaphase, which may facilitate the study of copulation behaviors of Sichuan snub-nosed monkeys.

Key words: Copulation, Ejaculation criterion, Sichuan snub-nosed monkey ( Rhinopithecus roxellana)

摘要： 通过对位于秦岭周至国家级自然保护区玉皇庙西梁川金丝猴群的交配行为进行拍摄记录(2003 年7～12 月), 运用NOLDUS公司编制的The Observer 610 动物行为分析系统对摄像资料进行分析, 发现野生川金丝猴采用腹背式交配方式, 交配中(N = 285) 有单足踩脚踝(54157%) 和双足踩脚踝(45143%) 两种姿势, 与圈养观察中仅发现单足踩脚踝交配姿势有别。此外, 通过与笼养和圈养条件下报道的射精标准比较, 我们将抽插过程分为“抽插前期”和“抽插后期”两个阶段, 并试图为川金丝猴交配过程中的射精行为判定提供一个量化辅助。

关键词: 川金丝猴, 交配, 射精标准