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arXiv 1407.6074q-bio.PEcs.SIphysics.soc-ph
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高分辨率动物社交网络的时空动态:我们能从家畜身上学到什么?

Spatial-Temporal Dynamics of High-Resolution Animal Social Networks: What Can We Learn from Domestic Animals?

Shi Chen, Amiyaal Ilany, Brad J. White, Michael W. Sanderson, Cristina Lanzas

摘要:

最近对动物社交网络的研究大大增加了我们对动物行为、社会互动以及许多重要的生态学和流行病学过程的理解。然而,由于难以记录准确的接触信息,大多数研究都处于低时间和空间分辨率。家畜(如牛)具有社会行为,并且可以作为一个优秀的研究系统,因为它们的位置可以被明确和持续地跟踪,从而可以准确地构建它们的社交网络。我们使用射频标签来精确地跟踪牛的位置,并分析高分辨率的牛社交网络。我们测试了这些高分辨率网络的时间平稳性和空间同质性的假设,并证明了大量的时空异质性在不同的日常时间段(喂养和非喂养)和不同领域的笔(谷物铺位,水槽,干草铺位,和其他一般笔面积)。使用全局网络特征(网络密度,指数随机图模型结构),子群聚类(模块化),三元属性(传递性)和二元交互(二次分配过程的相关系数)分析社会网络结构。在喂食期间,牛往往与干草堆周围的其他牛有最强烈和最一致的接触。这些结果无法从较低空间(在整个围栏水平上聚合)或时间(在日常水平上聚合)分辨率的数据中确定。这些结果揭示了实时动物社会网络结构动态的新见解,提供了更准确的描述,可以更准确地建模多种(直接和间接)疾病传播途径。

英文摘要:

Recent studies of animal social networks have significantly increased our understanding of animal behavior, social interactions, and many important ecological and epidemiological processes. However, most of the studies are at low temporal and spatial resolution due to the difficulty in recording accurate contact information. Domestic animals such as cattle have social behavior and serve as an excellent study system because their position can be explicitly and continuously tracked, allowing their social networks to be accurately constructed. We used radio-frequency tags to accurately track cattle position and analyze high-resolution cattle social networks. We tested the hypothesis of temporal stationarity and spatial homogeneity in these high-resolution networks and demonstrated substantial spatial-temporal heterogeneity during different daily time periods (feeding and non-feeding) and in different areas of the pen (grain bunk, water trough, hay bunk, and other general pen area). The social network structure is analyzed using global network characteristics (network density, exponential random graph model structure), subgroup clustering (modularity), triadic property (transitivity), and dyadic interactions (correlation coefficient from a quadratic assignment procedure). Cattle tend to have the strongest and most consistent contacts with others around the hay bunk during the feeding time. These results cannot be determined from data at lower spatial (aggregated at entire pen level) or temporal (aggregated at daily level) resolution. These results reveal new insights for real-time animal social network structure dynamics, providing more accurate descriptions that allow more accurate modeling of multiple (both direct and indirect) disease transmission pathways.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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