Fine-scale collective movements reveal present, past and future dynamics of a multilevel society in Przewalski’s horses

Katalin Ozogány (), Viola Kerekes, Attila Fülöp, Zoltán Barta and Máté Nagy ()
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Katalin Ozogány: University of Debrecen
Viola Kerekes: Hortobágy National Park Directorate
Attila Fülöp: University of Debrecen
Zoltán Barta: University of Debrecen
Máté Nagy: Hungarian Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract Studying animal societies needs detailed observation of many individuals, but technological advances offer new opportunities in this field. Here, we present a state-of-the-art drone observation of a multilevel herd of Przewalski’s horses, consisting of harems (one-male, multifemale groups). We track, in high spatio-temporal resolution, the movements of 238 individually identified horses on drone videos, and combine movement analyses with demographic data from two decades of population monitoring. Analysis of collective movements reveals how the structure of the herd’s social network is related to kinship and familiarity of individuals. The network centrality of harems is related to their age and how long the harem stallions have kept harems previously. Harems of genetically related stallions are closer to each other in the network, and female exchange is more frequent between closer harems. High movement similarity of females from different harems predicts becoming harem mates in the future. Our results show that only a few minutes of fine-scale movement tracking combined with high throughput data driven analysis can reveal the structure of a society, reconstruct past group dynamics and predict future ones.

Date: 2023
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DOI: 10.1038/s41467-023-40523-3

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