Yuli S. Fitriana, Eko Sulistyadi, Rizki Kurnia Tohir, Mhd Muhajir Hasibuan, Farid Rifaie, Ibnu Maryanto, Arie Mulia Lubis, M. F. Rifqi
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However, comprehensive data on population density across its Indonesian distribution area still needs to be improved. To address this knowledge gap, we conducted a thorough survey and study to estimate the population density of long-tailed macaques on Deli Island, located in Banten Province. Long-tailed macaques were introduced to Deli Island between 1989 and 1990 with a total of 1000 males and 10,000 females. To date, a total of 9,500 individuals have been harvested from this island in the period 1991-2010. We employed the line transect distance sampling (LTDS) method with a perpendicular distance approach that covered all habitat types throughout the island. Our findings revealed that the population density of long-tailed macaques on Deli Island is approximately five individuals per hectare, with an estimated total population of 4,860. The data pertaining to age structure and sex ratio is notably limited, primarily due to challenges in identification caused by dense vegetation. 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引用次数: 0
摘要
摘要Fitriana YS, Sulistyadi E, Tohir RK, Hasibuan MM, Rifaie F, Maryanto I, Lubis AM, Rifqi MF.2024.印度尼西亚万丹省德利岛长尾猕猴种群研究。Biodiversitas 25: 144-150.了解灵长类物种的分布和种群动态对实际保护工作至关重要。然而,即使是种群数量看似丰富的物种,也往往无法获得此类信息。长尾猕猴(Macaca fascicularis Raffles,1821 年)在东南亚分布广泛,包括印度尼西亚的苏门答腊岛、爪哇岛、加里曼丹岛、巴厘岛、龙目岛和小巽他岛。然而,印尼分布区内种群密度的综合数据仍有待改进。为了填补这一知识空白,我们在万丹省的德利岛上进行了一次全面的调查和研究,以估计长尾猕猴的种群密度。长尾猕猴于1989年至1990年间被引入德利岛,当时共引进了1000只雄性长尾猕猴和10,000只雌性长尾猕猴。1991-2010 年间,该岛共捕获了 9,500 只长尾猕猴。我们采用了线段距离取样法(LTDS),以垂直距离取样的方法覆盖了全岛的所有栖息地类型。我们的研究结果表明,德利岛上长尾猕猴的种群密度约为每公顷五只,估计总种群数量为 4,860 只。有关年龄结构和性别比例的数据明显有限,这主要是由于茂密的植被给识别带来了困难。为了解决这些局限性并获得更全面的了解,必须开展更多研究,以准确确定岛上的年龄结构和性别比例。我们的研究为保护该物种提供了重要的基础数据。我们建议对长尾猕猴在整个印度尼西亚的分布范围进行系统调查。这一举措将有助于评估长尾猕猴的威胁状况,并为保护工作制定全面计划。
Population study of long-tailed macaque (Macaca fascicularis) on Deli Island, Banten, Indonesia
Abstract. Fitriana YS, Sulistyadi E, Tohir RK, Hasibuan MM, Rifaie F, Maryanto I, Lubis AM, Rifqi MF. 2024. Population study of long-tailed macaque (Macaca fascicularis) on Deli Island, Banten, Indonesia. Biodiversitas 25: 144-150. Understanding the distribution and population dynamics of primate species is essential for practical conservation efforts. However, such information is often unavailable, even for species whose populations appear abundant. The long-tailed macaque (Macaca fascicularis Raffles, 1821) is a species with a wide range in Southeast Asia, including Sumatra, Java, Kalimantan, Bali, Lombok, and Lesser Sunda in Indonesia. However, comprehensive data on population density across its Indonesian distribution area still needs to be improved. To address this knowledge gap, we conducted a thorough survey and study to estimate the population density of long-tailed macaques on Deli Island, located in Banten Province. Long-tailed macaques were introduced to Deli Island between 1989 and 1990 with a total of 1000 males and 10,000 females. To date, a total of 9,500 individuals have been harvested from this island in the period 1991-2010. We employed the line transect distance sampling (LTDS) method with a perpendicular distance approach that covered all habitat types throughout the island. Our findings revealed that the population density of long-tailed macaques on Deli Island is approximately five individuals per hectare, with an estimated total population of 4,860. The data pertaining to age structure and sex ratio is notably limited, primarily due to challenges in identification caused by dense vegetation. To address these limitations and acquire a more comprehensive understanding, additional research is essential for the accurate determination of the age structure and sex ratio on the island. Our study provides crucial baseline data for conserving this species. We recommend implementing a systematic survey encompassing the entire distribution range of the long-tailed macaque across Indonesia. Such an initiative will be instrumental in assessing its threat status and laying out a comprehensive plan for conservation efforts.