Fig. 3
From: Anaplasma phagocytophilum evolves in geographical and biotic niches of vertebrates and ticks
Values of betweenness centrality (BNC) (a) and PageRank (PR) (b) for each of the haplotypes of A. phagocytophilum. Only the haplotypes with values higher than 0 for either BNC or PR are included in each chart. Categories correspond to the phylogenetic clusters shown in Fig. 1. Betweenness centrality represents the relative importance of a haplotype in the complete network. Betweenness centrality is related to the connectivity of a network, in so much as high betweenness vertices have the potential to disconnect graphs if removed. Therefore, a node with high BNC is a node that is very central and connected to many other nodes. PR represents the importance of the nodes to which a given link is connected. It is thus a measure of the potential spread of a node through connected nodes, according to its relative importance