Passamani Marcelo, Rylands Anthony B
Museu de Biologie Prof. Mello Leitão, Av. José Ruschi 04, 29650000, Santa Teresa, Espírito Santo, Brazil.
Department of Zoology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil.
Primates. 2000 Jan;41(1):27-38. doi: 10.1007/BF02557459.
We report on the diet and feeding behaviour of a group of Geoffroy's marmosets (Callithrix geoffroyi) in an Atlantic forest fragment in south-eastern Brazil, studied during the period February 1993 to Januaray 1994. Major food categories were gums (68.6%) fruits (15%), and small animal prey (invertebrates 14.6% and vertebrates 0.8%). Dietary changes were observed between the wet and dry seasons, although they were not statistically significant. Insects and gums were consumed throughout the year but fruits were more prevalent in the diet in the wet season. Plant species exploited for their gums includedInga stipularis, followed byAcacia paniculata, Paulinia carpopodia, andBauhinia angulosa. Chemical analysis of the gum of the four species most used all presented high values for carbohydrates and crude proteins. Fruits of an unidentified species of Myrtaceae (sp. 2) were consumed the most. Animal prey consisted mainly of insects, arachnids, snails, and in three cases, lizards and frogs, with orthopterans being the most prevalent insect prey. This study demonstrates thatC. geoffroyi efficiently exploits resources typically available in secondary and disturbed forest habitat. The main threat to the species is forest destruction, degradation, and fragmentation, but the management of small forest fragments may be an effective corservation strategy.
我们报告了1993年2月至1994年1月期间，在巴西东南部一片大西洋森林片段中，一群杰氏狨（Callithrix geoffroyi）的饮食和觅食行为。主要食物类别为树胶（68.6%）、水果（15%）和小型动物猎物（无脊椎动物占14.6%，脊椎动物占0.8%）。尽管干湿季之间的饮食变化无统计学意义，但仍可观察到其差异。全年都食用昆虫和树胶，但水果在湿季的饮食中更为常见。被利用获取树胶的植物物种包括具托叶印加树（Inga stipularis），其次是圆锥相思（Acacia paniculata）、卡波氏赛木（Paulinia carpopodia）和角叶羊蹄甲（Bauhinia angulosa）。对四种最常使用的树胶进行化学分析，结果显示碳水化合物和粗蛋白含量均很高。消耗量最大的是一种未鉴定的桃金娘科植物（物种2）的果实。动物猎物主要包括昆虫、蛛形纲动物、蜗牛，还有三次捕食蜥蜴和青蛙，其中直翅目昆虫是最常见的猎物。本研究表明，杰氏狨能有效利用次生林和受干扰森林栖息地中常见的资源。该物种面临的主要威胁是森林破坏、退化和碎片化，但对小片森林进行管理可能是一种有效的保护策略。
