Transition to siblinghood causes substantial and long-lasting physiological stress reactions in wild bonobos
V. Behringer, A. Berghänel, S. M. Lee, B. Fruth, G. Hohmann
This study shows that transitioning to siblinghood in wild bonobos causes a significant and prolonged increase in cortisol levels, indicating physiological stress beyond weaning.
bioRxiv · Feb 14, 2022 · PreprintEvolutionary Biology