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Female tiger Panthera tigris home range size and prey abundance: important metrics for management

机译:母老虎Panthera tigris家的大小和猎物的丰富度:管理的重要指标

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Tigers Panthera tigris are highly threatened and continue to decline across their entire range. Actions to restore and conserve populations need to be based on science but, in South-east Asia, information on ecology and behaviour of tigers is lacking. This study reports the relationship between the home range size of female tigers and prey abundance, using data from radio-collared tigers in Huai Kha Khaeng Wildlife Sanctuary, Thailand, and published data from other studies. A total of 11 tigers, four males and seven females, were fitted with global positioning system collars, to estimate home ranges using 95 and 100% minimum convex polygons (MCP). Prey abundance was estimated by faecal accumulation rates. The mean home range size of male tigers was 267 and 294 km~(-2) based on 95 and 100% MCPs, respectively; the mean female home range size was 70 and 84 km~(-2), respectively. Territories of male and female tigers had little overlap, which indicated both sexes were territorial. Mean densities of the prey species sambar Rusa unicolor, barking deer Muntiacus muntjac and large bovids were 7.5,3.5 and 3.0 km~(-2), respectively. When female home range size and prey abundance were compared at six locations in Thailand, and at other sites in India, Nepal, Bangladesh and Russia, a significant negative correlation was found between prey abundance and home range size. Monitoring this relationship can provide managers with metrics for setting conservation goals.
机译:虎豹虎受到高度威胁,并在整个范围内继续下降。恢复和保护种群的行动需要以科学为基础,但是在东南亚,缺乏有关老虎的生态和行为的信息。这项研究使用泰国怀卡海野生动物保护区的射电老虎的数据,报告了雌性老虎的家庭范围大小与猎物丰富度之间的关系,并发表了其他研究的数据。总共有11只老虎,4头雄性和7头雌性配备了全球定位系统项圈,以使用95%和100%的最小凸多边形(MCP)来估计返程范围。猎物的丰度通过粪便积累率来估算。基于95%和100%的MCP,雄性老虎的平均栖息地大小分别为267和294 km〜(-2)。女性平均家庭范围分别是70 km和84 km〜(-2)。雄性和雌性老虎的领土几乎没有重叠,这表明这两种性别均为领土。捕食者Rus unicolor,吠叫鹿Muntiacus muntjac和大型牛的平均密度分别为7.5、3.5和3.0 km〜(-2)。当比较泰国六个地方以及印度,尼泊尔,孟加拉国和俄罗斯其他地方的女性家庭范围大小和猎物丰富度时,发现猎物丰富度和家庭范围大小之间存在显着的负相关。监视这种关系可以为管理人员提供用于设定保护目标的指标。

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