Social dominance and darwinian fitness in laboratory mice: an alternative test

摘要: Social behavior of subjects from each three inbred strains mice (DBA/2, BALB/c, and C57BL) was compared to that their derived F1 F2 generations in standardized living units (triads). Four males (P1, P2, F1, F2) were placed 30 triads for 7 days, dominance hierarchies determined. In order assess the effect female presence on intermale aggression, females one-half triads. general, considerable heterosis social observed, more aggression occurred among contained females. These results are consistent with hypothesis is a major component Darwinian fitness Mus musculus.