Identifying the role that individual animals play in their social network

Details Identifying the role that individual animals play in their social network Identifying the role that individual animals play in their social network

2004-03-20

arxiv.org/abs/q-bio/0403029v1

Proc. R. Soc. London B (Suppl.) 271, S477-S481 (2004)

Biology

Quantitative Biology

Populations and Evolution

9 pages, 4 figures, submitted to Ecology Letters

Scientific paper

Techniques recently developed for the analysis of human social networks are applied to the social network of bottlenose dolphins living in Doubtful Sound, New Zealand. We identify communities and subcommunities within the dolphin population and present evidence that sex- and age-related homophily play a role in the formation of clusters of preferred companionship. We also identify brokers who act as links between subcommunities and who appear to be crucial to the social cohesion of the population as a whole. The network is found to be similar to human social networks in some respects but different in some others such as the level of assortative mixing by degree within the population. This difference elucidates some of the means by which the network formed and evolves.

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