Topic: vasectomized male

The mechanisms underlying the emergence of a social organization in mice are mainly studied in unisex male colonies. In isogenic male mice groups, we previously showed that sociability trait predicts rank attainment in social hierarchy whereas differences in anxiety between highest and lowest ranked individuals appears after rank establishment (Battivelli et al. 2024).Here we show that isogenic female mice grouped by four rapidly form enduring social hierarchy, that can be analysed using a precedence test based on encounters within a plastic tube from which lower-ranked individuals come out ba