Polyspecific associations, in which individuals of multiple species move together, have not been reported in Asian primates. However, only one study in India has shown this lack of association quantitatively. We collected data on interspecific encounters among 5 species of diurnal primates in Danum Valley by censusing 4 predetermined routes of 9.9 km, covering 1544.3 km, and tracking red leaf monkeys (Presbytis rubicunda) for 423 h over 25 mo. We tested the null hypothesis that the frequency and duration of encounters did not differ from chance levels. During censuses, we detected primates 373 times and found 2 species on the same 100-m segment only 6 times. This frequency was not significantly different from the chance level. While following red leaf monkeys, the frequency of encounters was lower than expected by chance with Müeller’s gibbons (Hylobates muelleri) but higher than expected by chance with Bornean orangutans (Pongo pygmaeus) in the nonfruiting season. Interspecific encounters accounted for 6.4% of tracking time, and the encounter duration was significantly longer than expected by chance for orangutans. Red leaf monkeys did not change their rate or direction of travel on meeting another species. We could not distinguish the association between red leaf monkeys and orangutans in the nonfruiting season from the possibility that the two species were independently attracted to the same place. In conclusion, we show the absence of active and consistent polyspecific association and identify avoidance in some species pairs in an Asian primate community.

在亚洲灵长类动物中，还没有报道多种物种的多聚性关联，其中多个物种的个体一起移动。但是，印度只有一项研究从数量上显示出这种缺乏关联。我们通过调查9.9公里，覆盖1544.3公里的4条预定路线并追踪红叶猴（Presbytis rubicunda），来收集Danum谷5种昼夜灵长类动物之间种间遭遇的数据）在25个月内持续423小时。我们检验了零假设，即遭遇的频率和持续时间与机会水平没有差异。在人口普查期间，我们检测到灵长类动物373次，在同一100米线段上仅发现6种灵长类动物。该频率与机会水平没有显着差异。跟随红叶猴时，相遇的频率低于Müeller的长臂猿（Hylobates muelleri）偶然遇到的发生率，但高于婆罗洲猩猩（Pongo pygmaeus）偶然遇到的发生率）在非结果季节。种间相遇占跟踪时间的6.4％，相遇时间明显长于猩猩偶然的预期时间。红叶猴在遇到其他物种时并没有改变它们的行进速度或方向。我们无法将非结果季节的红叶猴和猩猩之间的联系与两种物种被独立吸引到同一地方的可能性区分开。总之，我们显示了缺乏活跃且一致的多特异性关联，并确定了亚洲灵长类动物群落中某些物种对的回避。