估计群体生活,Papio anubis的个人暴露在掠食风险中的风险
Alexandre Suire1, Itsuki Kunita2, Roi Harel3,4
1Faculty of Global and Regional Studies, University of the Ryukyus, Okinawa, Japan.
PloS one
|November 8, 2023
概括
成年雄性始终在群体中占据暴露的位置.
科学领域:
- 行为生态学 行为生态学
- 灵长类动物学 灵长类动物学
- 空间生态学空间生态学
背景情况:
- 群居猎物的掠食风险受到捕食者狩猎风格和猎物的空间定位的影响.
- 走动的掠食者在群体边缘构成风险,而伏击掠食者则威胁到孤立的个体.
- 存在理论模型来评估掠食风险,但经验验证是具有挑战性的.
研究的目的:
- 调查野生群中处于高掠食风险位置的个体的年龄性别分布.
- 为了确定空间定位是否与掠食风险代理相关,在来自多种掠食者的威胁下.
主要方法:
- 使用全球定位系统 (GPS) 项圈追踪26只野生的位置.
- 应用了多个掠食风险代理,包括"危险域" (Voronoi模块化和检测距离),群体位置 (最小凸多边形),周围环境和二距离.
- 分析了的空间分布与,狮子和子的掠食风险有关.
主要成果:
- 在所有掠食风险代理机构中,成年男性始终被发现处于群体边缘的孤立位置.
- 这种空间定位表明对捕食者的脆弱性增加,与经验证据一致,表明成年雄性的捕食率更高.
- 这些发现强调了空间定位在调解群体生活动物掠食风险方面的关键作用.
结论:
- 空间定位显著影响个人在社会群体内的掠夺风险.
- 成年雄性的倾向是占据边缘位置,这增加了它们对各种捕食者类型的脆弱性.
- 了解空间动态对于理解社会物种的反捕食者策略至关重要.
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