Porter Leila M, Garber Paul A
Northern Illinois University, DeKalb, IL 60115, USA.
Am J Primatol. 2007 Dec;69(12):1340-53. doi: 10.1002/ajp.20441.
We examined the effects of polyspecific associations on the behavior of one group of Callimico goeldii in northwestern Bolivia. Data were collected for 1 year using focal animal sampling at 5-min intervals, for a total of 1,375 observation hours. In total, C. goeldii formed mixed species troops with five groups of Saguinus fuscicollis and six groups of S. labiatus, and these were maintained during 81% of observations. C. goeldii rested more and traveled less while alone than while associated, but neither vigilance behavior in the understory nor habitat use were affected by association status. The composition of the group's diet was different while alone (higher in structural carbohydrates [fungi] and lower in simple sugars [ripe fruits] and protein [insects]) than while associated (fungi 65 vs. 37%; fruits 13 vs. 32%; insects 5 vs. 15%). We propose therefore, that C. goeldii has a lower quality and more narrowly based diet while alone as compared to while associated. The factors that allow for this dietary expansion while in mixed species troops require further investigation.
我们研究了多物种关联对玻利维亚西北部一组白喉伶猴行为的影响。使用焦点动物取样法，每隔5分钟收集一次数据，持续1年，总计1375个观察小时。白喉伶猴总共与5组褐背松鼠猴和6组白唇松鼠猴组成了混合物种群，在81%的观察期间这些混合物种群得以维持。与群居时相比，白喉伶猴独自活动时休息更多、移动更少，但林下的警戒行为和栖息地利用情况均不受群居状态的影响。该群体独自活动时的饮食组成有所不同（结构碳水化合物[真菌]含量较高，单糖[成熟果实]和蛋白质[昆虫]含量较低），而群居时则相反（真菌含量分别为65%和37%；果实含量分别为13%和32%；昆虫含量分别为5%和15%）。因此，我们认为，与群居时相比，白喉伶猴独自活动时的饮食质量较低且种类更单一。在混合物种群中促成这种饮食扩展的因素需要进一步研究。
