Postgraduate Program in Development and Environment, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil.
Am J Primatol. 2011 Dec;73(12):1199-209. doi: 10.1002/ajp.20990. Epub 2011 Sep 6.
The feeding behavior of a group of titis (Callicebus coimbrai) was monitored over an annual cycle at a site in northeastern Brazil. Behavioral data were collected in scan samples (1-min scan at 5-min intervals), and complementary data on fruit availability and new leaf cover were collected. Feeding time accounted for 28.9% of daily activity. Fruit was the principal item of the diet (61.2% of records) and the primary category in all months except September, when it was surpassed by leaves. Young leaves were the second most important category (20.0%). The consumption of seeds and insects was prominent in November and December. Fifty-two plant species were exploited, and the Elaeocarpaceae, Myrtaceae, Sapotaceae, and Passifloraceae provided the vast majority (86.0%) of plant feeding records. The phenological record did not provide a good measure of fruit availability, but a strong correlation (r(s) =0.902, P<0.0001, n=12) was found between the consumption of leaves and the exploitation of lianas each month. Lianas accounted for 28.2% of plant feeding records, and predominated between August and December. This suggests that lianas may represent a key factor in the ability of the species to tolerate the intense habitat fragmentation found throughout its geographic range.
在巴西东北部的一个地点，对一组卷尾猴（Callicebus coimbrai）的进食行为进行了为期一年的监测。通过扫描样本（每 5 分钟进行 1 分钟扫描）收集了行为数据，并收集了有关水果可用性和新叶覆盖的补充数据。进食时间占每日活动的 28.9%。水果是饮食的主要项目（占记录的 61.2%），除了 9 月，在所有月份都是主要类别，而 9 月则被叶子所取代。嫩叶是第二重要的类别（占 20.0%）。种子和昆虫的消耗在 11 月和 12 月最为突出。共利用了 52 种植物，麻藤科、桃金娘科、山榄科和西番莲科提供了绝大多数（86.0%）的植物进食记录。物候记录并不能很好地衡量水果的可用性，但发现每月消耗的叶子和藤本植物的利用之间存在很强的相关性（r(s) =0.902，P<0.0001，n=12）。藤本植物占植物进食记录的 28.2%，主要存在于 8 月至 12 月之间。这表明，藤本植物可能是该物种能够耐受其地理范围内广泛存在的强烈生境破碎化的关键因素。
