Estimating minimum area of suitable habitat and viable population size for the northern muriqui (Brachyteles hypoxanthus)
Estimating minimum area of suitable habitat and viable population size for the northern muriqui (Brachyteles hypoxanthus)
复制标题
DOI：
10.1007/s10531-005-3575-1
复制
发表时间：
2006-12-01
影响因子：
3.4
通讯作者：
Grelle, Carlos Eduardo V.
中科院分区：
文献类型：
--
作者：
Brito, Daniel;Grelle, Carlos Eduardo V.
采用VORTEX软件包对大西洋森林特有灵长类动物黄背短角水蚤的最小生存种群进行了种群生存力分析。其目标是：（1）估计人口和遗传MVP，可用作未来建模的准灭绝阈值，（2）估计最小适宜栖息地面积（MASH）。该模型预测，40和700人的群体是必要的，以实现人口和遗传稳定，分别。该模型对近交衰退、性比和繁殖（繁殖雌性的百分比）的变化更敏感。据估计，MASH拥有遗传上可行的种群达到11，570公顷。尽管栖息地受到严重干扰，但Murivalus仍设法坚持下去，但结果表明，尽管大多数现存种群没有受到灭绝的威胁，但它们太小，从长远来看无法在遗传上存活，并且会失去大部分杂合性。
A population viability analysis (PVA) using the computer package VORTEX was conducted to assess the minimum viable population (MVP) of the Atlantic Forest endemic primate Brachyteles hypoxanthus. The objectives were: (1) to estimate demographic and genetic MVPs that could be used as quasi-extinction thresholds for future modeling, and (2) to estimate the minimum area of suitable habitat (MASH). The model predicted that populations of 40 and 700 individuals were necessary to achieve demographic and genetic stability, respectively. The model was more sensitive to changes in inbreeding depression, sex ratio and reproduction (percentage of breeding females). MASH estimated to contain genetically viable populations reached 11,570 ha. Muriquis have managed to persist despite severe habitat disturbance, but the results suggest that although most of the extant populations are not threatened by extinction, they are too small to be genetically viable in the long-run, and will loose most of their heterozygosity.