Figure 1.

Characterization of selective aggression in male and female prairie voles during the resident-intruder test (RIT). Adult male and female prairie voles were cohabitated with a same-sex littermate (SN), or an opposite-sex partner for 24 hrs (24H) or 3 weeks (3W) before being subjected to a 10-min RIT. Scorings for the time spent in aggression (A) or nose-to-nose sniffing (B) is detailed after normalization by z-scoring within cohorts and then between sexes. Data are depicted as mean ± SEM in (A). In (A,B), each dot represents an individual vole. *p < 0.05, **p < 0.01, ***p < 0.001 vs. SN group within same sex, Tukey’s post-hoc test.