Seasonal variation in diet and nutrition of the northern-most population of Rhinopithecus roxellana
Seasonal variation in diet and nutrition of the northern-most population of Rhinopithecus roxellana
复制标题
最北川金丝猴种群饮食和营养的季节变化
DOI：
10.1002/ajp.22755
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发表时间：
2018-04-01
影响因子：
2.4
通讯作者：
Li, Baoguo
中科院分区：
文献类型：
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作者：
Hou, Rong;He, Shujun;Li, Baoguo
动物食用的食物的可获得性和营养质量在空间和时间上有很大的变化，特别是在冬季带来长时间叶片和水果稀缺期的温带地区。对秦岭最北部的金丝猴(Rhinopithecus Roxellana)中国种群的食物可获得性、食物组成和常量营养素进行了分析，以了解在以落叶树木为主的高度季节性环境中的食物选择。在4月至11月的温暖月份，树叶的消耗与其可获得性成比例，而在12月至3月的叶片稀缺月份，树皮和叶/花蕾构成它们的大部分食物。当树叶主宰它们的饮食时，金丝猴优先选择粗蛋白质与酸性洗涤纤维比例较高的树叶。当叶片较少时，选择非结构性碳水化合物和能量含量较高、酸性洗涤纤维含量较低的树皮和叶/花蕾。南方金鼻猴的种群可以转向吃地衣，然而，在这个没有地衣的地区，这里研究的种群已经适应了它们凉爽的落叶栖息地，取而代之的是吃花蕾和树皮。碳水化合物和能量丰富的食物似乎是该物种在温带栖息地持续生存所需的关键资源。这些猴子的饮食灵活性，在季节和种群之间，可能有助于它们在一系列栖息地和环境中的广泛分布。
There is a great deal of spatial and temporal variation in the availability and nutritional quality of foods eaten by animals, particularly in temperate regions where winter brings lengthy periods of leaf and fruit scarcity. We analyzed the availability, dietary composition, and macronutrients of the foods eaten by the northern-most golden snub-nosed monkey (Rhinopithecus roxellana) population in the Qinling Mountains, China to understand food choice in a highly seasonal environment dominated by deciduous trees. During the warm months between April and November, leaves are consumed in proportion to their availability, while during the leaf-scarce months between December and March, bark and leaf/flower buds comprise most of their diet. When leaves dominated their diet, golden snub-nosed monkeys preferentially selected leaves with higher ratios of crude protein to acid detergent fiber. While when leaves were less available, bark and leaf/flower buds that were high in nonstructural carbohydrates and energy, and low in acid detergent fiber were selected. Southern populations of golden snub-nosed monkey can turn to eating lichen, however, the population studied here in this lichen-absent area have adapted to their cool deciduous habitat by instead consuming buds and bark. Carbohydrate and energy rich foods appear to be the critical resources required for the persistence of this species in temperate habitat. The dietary flexibility of these monkeys, both among seasons and populations, likely contributes to their wide distribution over a range of habitats and environments.