The collared peccary (Pecari tajacu) is distributed from southwestern USA to northern Argentina; however, in some Argentinean localities it went extinct over 50 years ago. As part of a rewilding project, two peccary groups (one captive-bred family group and one mixed group formed by not genetically related individuals) were reintroduced to the Ibera National Park. Following the release, we monitored the movements of 16 individuals to obtain GPS locations every 100 min, for 6 months. We evaluated the individual’s spatial patterns by assessing site fidelity, home range changes, and habitat selection. Most members of the family group survived and established a home range whereas almost all members of the mixed group dispersed and did not survive. Using the Autocorrelated Kernel Density Estimator, the groups’ home range was 8.9 ± 1.7 km² for the entire study period. In addition, individuals showed high fidelity to release site and a stable home range a few months after release. At larger scales (second order of selection), peccaries selected forested habitat and proximity to release site while at a smaller scale (third order of selection), they avoided grasslands. We highlight the importance of familiarity of individuals prior to release and provide recommendations for future reintroductions. Three years later, by September 2019, nine groups were established in the Ibera National Park and the abundance was over 45 individuals. This is the first post-release assessment of the movement patterns of collared peccaries in South America.

中文翻译：

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在南美重新引入首批领领野猫（Pecari tajacu）的空间格局

领野猪（Pecari tajacu）从美国西南部分布到阿根廷北部；但是，在阿根廷的某些地区，它在50年前就已经灭绝了。作为野外计划的一部分，将两个野兽群（一个圈养家庭群和一个非遗传亲戚组成的混合群）重新引入了伊比拉国家公园。发布后，我们监视了16个人的移动，以每100分钟获取GPS位置，持续6个月。我们通过评估站点保真度，家庭范围变化和栖息地选择来评估个人的空间格局。家庭组的大多数成员幸存下来并建立了住所，而混合组中的几乎所有成员都分散了下来并没有生存。使用自相关内核密度估计器，这些组的起始范围为8.9±1.7 km ²在整个学习期间。另外，个体在释放后几个月表现出较高的保真度和稳定的家庭范围。在规模较大（选择第二顺序）时，野兽人选择了森林栖息地和释放地点附近，而规模较小（选择第三顺序）时，他们避开了草原。我们强调发布之前熟悉个人的重要性，并为以后的重新介绍提供建议。三年后，到2019年9月，在伊伯拉国家公园建立了9个小组，人数超过45人。这是对南美领领兽的运动方式的首次发布后评估。