Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education; Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin Guangxi 541004, China; E-mail:
Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education; Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin Guangxi 541004, China.
Zool Res. 2018 Jul 18;39(4):284-290. doi: 10.24272/j.issn.2095-8137.2018.046. Epub 2018 Apr 3.
Comparative studies of sympatric species are essential for understanding behavioral and ecological adaptation as well as the mechanisms that can reduce resource competition to allow coexistence. François' langurs (Trachypithecus francoisi) and Assamese macaques (Macaca assamensis) are sympatric primate species found in the limestone seasonal rainforests of Nonggang Nature Reserve, southwestern Guangxi, China. To explore their different adaptation strategies, we collected data on diet using scan sampling at 15-min intervals. Our results revealed that François' langurs showed a more flexible diet composition than Assamese macaques. François' langurs increased dietary diversity and mature leaf consumption in response to seasonal scarcity of preferred young leaves and fruits, whereas Assamese macaques relied heavily on young bamboo leaves (Indocalamus calcicolus) in most months. These variations reflect the differences in digestive physiology, morphology, and the temporal and spatial distribution of food resources.
比较同域物种的研究对于理解行为和生态适应以及可以减少资源竞争以允许共存的机制至关重要。弗朗索瓦叶猴（Trachypithecus francoisi）和阿萨姆长尾叶猴（Macaca assamensis）是在中国广西西南部弄岗自然保护区的石灰岩季节性雨林中发现的同域灵长类物种。为了探索它们不同的适应策略，我们使用 15 分钟间隔的扫描采样法收集了关于饮食的数据。我们的结果表明，弗朗索瓦叶猴的饮食组成比阿萨姆长尾叶猴更具弹性。弗朗索瓦叶猴通过增加饮食多样性和成熟叶片的消耗来应对首选嫩叶和果实季节性短缺的问题，而阿萨姆长尾叶猴在大多数月份严重依赖于年轻的竹叶（Indocalamus calcicolus）。这些变化反映了消化生理学、形态学以及食物资源的时间和空间分布的差异。
