Florida International University, Department of Biological Sciences, Institute of the Environment, Florida International University, 3000 NE 151st Street, North Miami, FL 33181, USA; Dolphin Communication Project, P.O. Box 7485, Port Saint Lucie, FL 34984 USA; University of Massachusetts Dartmouth, 285 Old Westport Rd, North Dartmouth, MA, USA.
Florida International University, Department of Biological Sciences, Institute of the Environment, Florida International University, 3000 NE 151st Street, North Miami, FL 33181, USA; University of Massachusetts Dartmouth, 285 Old Westport Rd, North Dartmouth, MA, USA; Dolphin Alliance Project, P.O. Box 6449, New Bedford, MA 02742, USA.
Behav Processes. 2022 Aug;200:104694. doi: 10.1016/j.beproc.2022.104694. Epub 2022 Jun 28.
Social network analysis (SNA) can be used to explore a population's social structure and how individuals contribute to social cohesion. Quantifying relationships between individuals in a network can vary depending on the data available or the relationship of interest. Studies of readily visible species can use direct interaction measures in SNA, while studies of cryptic species usually rely on the 'gambit of the group'; individuals observed in a group are considered associates. This study compared the association and pectoral fin contact (PFC) networks of Atlantic spotted dolphins around Bimini to test the 'gambit of the group' hypothesis. The association network had nearly three times as many edges than the PFC network. Still, the two networks were correlated; individuals with a relationship in one network had a comparable relationship in the other. Many network measures were also correlated across networks, suggesting association is an acceptable substitute for physical interaction in certain cases. The current study supports the 'gambit of the group', but also highlights the importance of considering what types of relationships are used in the analysis of the social system of the focal species.
社会网络分析（SNA）可用于探索人群的社会结构以及个体如何促进社会凝聚力。在网络中量化个体之间的关系可以根据可用的数据或感兴趣的关系而有所不同。对于易于观察的物种，SNA 可以使用直接交互度量，而对于隐匿物种的研究通常依赖于“群体的策略”；在群体中观察到的个体被视为同伴。本研究比较了比米尼附近大西洋斑点海豚的关联和胸鳍接触（PFC）网络，以检验“群体策略”假说。关联网络的边数几乎是 PFC 网络的三倍。尽管如此，这两个网络是相关的；在一个网络中具有关系的个体在另一个网络中也具有类似的关系。许多网络度量在网络之间也是相关的，这表明在某些情况下，关联是物理相互作用的可接受替代品。本研究支持“群体策略”，但也强调了在分析焦点物种的社会系统时考虑所使用的关系类型的重要性。
