Population size estimation of an Asian elephant population in eastern Cambodia through non-invasive mark-recapture sampling
Population size estimation of an Asian elephant population in eastern Cambodia through non-invasive mark-recapture sampling
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DOI：
10.1007/s10592-014-0579-y
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发表时间：
2014-08-01
影响因子：
2.2
通讯作者：
Sovanna, Prum
中科院分区：
文献类型：
--
作者：
Gray, Thomas N. E.;Vidya, T. N. C.;Sovanna, Prum
亚洲象是亚洲热带地区保护的旗舰物种，但可靠的种群数量估计仅来自少数种群。这是因为该物种难以捉摸，并且在其大部分范围内的密集栖息地以低密度出现。柬埔寨东部平原的金边野生动物保护区（Phnom Prich Wildlife Sanctuary）是东南亚最大的保护区综合体之一，也是这样一个没有对大象进行系统普查的栖息地。因此，我们使用基于粪便dna的捕获-标记-再捕获采样来估计种群大小，以建立监测基线。五次抽样会议的目标是金边野生动物保护区及其附近被认为是大象使用的所有区域。收集新鲜粪便作为DNA来源，并基于9个微卫星位点进行基因分型。收集的224个样本产生了78个独特的基因型。利用封闭种群捕获-标记-再捕获模型的平均模型，估计金边野生动物保护区的大象种群数量为136 +/- A 18 （SE）。我们的研究结果表明，柬埔寨东部支持一个区域重要的亚洲象种群。
The Asian elephant is a flagship species for conservation in tropical Asia, but reliable population estimates are available only from a few populations. This is because the species can be elusive and occurs at low densities in dense habitat over a large part of its range. Phnom Prich Wildlife Sanctuary in the Eastern Plains, Cambodia, which is part of one of the largest protected area complexes in South-East Asia, is one such habitat that had not been systematically censused for elephants. We, therefore, used fecal-DNA based capture-mark-recapture sampling to estimate the population size for establishing a monitoring baseline. Five sampling sessions targeted all areas in and adjacent to Phnom Prich Wildlife Sanctuary believed to be used by elephants. Fresh dung was collected as the source of DNA and genotyping was carried out based on nine microsatellite loci. The 224 samples collected yielded 78 unique genotypes. Using model averaging of closed population capture-mark-recapture models, the elephant population in Phnom Prich Wildlife Sanctuary was estimated to number 136 +/- A 18 (SE) individuals. Our results suggest that eastern Cambodia supports a regionally important Asian elephant population.