Hon Naven, Behie Alison M, Rothman Jessica M, Ryan Ken G
Conservation International Greater Mekong, Phnom Penh, Cambodia.
School of Biological Science, Victoria University of Wellington, Wellington, New Zealand.
Primates. 2018 Jul;59(4):339-346. doi: 10.1007/s10329-018-0663-x. Epub 2018 Apr 24.
This study measured the nutritional composition of foods consumed by the northern yellow-cheeked crested gibbon (Nomascus annamensis) in northeastern Cambodia. One group of N. annamensis was studied, and focal animal sampling was used to observe their feeding behavior. The study was conducted for 4 months (January-April 2015) in the dry season and 69 foods were collected for nutritional analyses. N. annamensis fed on 37 plant species, but only seven species made up more than 80% of feeding time. N. annamensis spent the majority of their time feeding on fruit (60.36%), followed by young leaves (22.60%), flowers (13.74%), and mature leaves (3.30%). Fruit had the highest concentrations of total non-structural carbohydrates, while young leaves had the highest concentration of crude protein compared to other food items. All food items had similar concentrations of lipids, except young leaves, which had lower levels than fruit and flowers. All plant parts consumed by N. annamensis had similar amounts of neutral detergent fiber, acid detergent fiber, and acid detergent lignin. Thirty-two percent of all food items contained condensed tannins, and they had a similar level of it. All foods also had similar energy contents. This study adds to our knowledge of the feeding ecology of N. annamensis by providing baseline data on the make-up of the foods they eat and may contribute to captive feeding programs, ultimately assisting the conservation of this species.
本研究测定了柬埔寨东北部北白颊长臂猿（Nomascus annamensis）所食用食物的营养成分。对一组北白颊长臂猿进行了研究，并采用焦点动物取样法观察它们的取食行为。该研究在旱季进行了4个月（2015年1月至4月），共收集了69种食物进行营养分析。北白颊长臂猿取食37种植物，但只有7种植物占取食时间的80%以上。北白颊长臂猿大部分时间用于取食果实（60.36%），其次是嫩叶（22.60%）、花（13.74%）和成熟叶（3.30%）。果实中总非结构性碳水化合物含量最高，而嫩叶中的粗蛋白含量高于其他食物。除嫩叶的脂质含量低于果实和花外，所有食物的脂质含量相似。北白颊长臂猿食用的所有植物部分的中性洗涤纤维、酸性洗涤纤维和酸性洗涤木质素含量相似。所有食物中有32%含有缩合单宁，且含量相似。所有食物的能量含量也相似。本研究通过提供北白颊长臂猿所食用食物组成的基线数据，增加了我们对其取食生态学的了解，并可能有助于圈养饲养计划，最终协助保护该物种。
