Fig. 4

C57 social structures are more interconnected than those in wild-derived mouse societies. A C57 mice spend less time alone and have larger numbers of social participants in association events as compared to WD mice. The contour plot shows the average duration of observed time spent in different male and female group compositions across trials for C57 (left) and WD (right) mice. The scores reported here are the average number of hours estimated per trial. A white square indicates that a particular combination was not observed. B C57 females spend less than half of their total observed time alone throughout the trial, less than any other group. C All sex and genotype combinations combinations decrease the time spent in same-sex groups over the course of the trial, with males of both genotypes spending minimal amounts of their observation time in same-sex interactions. D, E Daily social networks from an example C57 trial (D) demonstrates a typical pattern of persistently high female interconnectivity while an example WD trial (E) demonstrates increasing network modularity over time. The size of connections between nodes represents the edge weight whereas the size of nodes reflects the node edge strength or the sum of all edge weights for a single node. F Number of network components increases in WD, but not C57, social networks over time. G Network edge density increases in C57, but not WD, social networks over time. H C57 females have consistently higher measures of node degree centrality, indicating that they are consistently meeting large numbers of social partners on each day of the trial, relative to other sex and genotype combinations. Data are plotted as means ± SEM