Journal
ISCIENCE
Volume 25, Issue 4, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.isci.2022.104049
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Funding
- UMNAcademic Health Center Seed Grant
- UMN Dept of Ecology, Evolution, and Behavior
- Evelyn Goyak Trust
- Rancho La Puerta Foundation
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The administration of intranasal oxytocin affects social behavior in African lions, as it increases their proximity to fellow group members and decreases vigilance towards out-group intruders. This finding has implications for understanding the evolution of social behavior and conservation efforts.
Oxytocin modulates mammalian social behavior; however, behavioral responses to intranasal oxytocin can vary across species and contexts. The complexity of social interactions increases with group dynamics, and the impacts of oxytocin on both within- and between-group contexts are unknown. We tested the effects of intranasal administration of oxytocin on social and non-social behaviors within in-group and out-group contexts in African lions. We hypothesized that, post intranasal oxytocin administration, lions would be in closer proximity with fellow group members, whereas out-group stimuli could either produce a heightened vigilance response or an attenuated one. Compared to control trials, post oxytocin administration, lions increased their time spent in close proximity (reducing their distance to the nearest neighbor) and decreased vigilance toward out-group intruders (reducing their vocalizations following a roar-playback). These results not only have important implications for understanding the evolution of social circuitry but may also have practical applications for conservation efforts.
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