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Long-lasting, kin-directed female interactions in a spatially structured wild boar Social Network

Podgorski, Tomasz and Lusseau, David and Scandura, Massimo and Sönnichsen, Leif and Jędrzejewska, Bogumiła (2014) Long-lasting, kin-directed female interactions in a spatially structured wild boar Social Network. PLoS One, Vol. 9 (6), e99875. eISSN 1932-6203. Article.

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DOI: 10.1371/journal.pone.0099875

Abstract

Individuals can increase inclusive fitness benefits through a complex network of social interactions directed towards kin. Preferential relationships with relatives lead to the emergence of kin structures in the social system. Cohesive social groups of related individuals and female philopatry of wild boar create conditions for cooperation through kin selection and make the species a good biological model for studying kin structures. Yet, the role of kinship in shaping the social structure of wild boar populations is still poorly understood. In the present study, we investigated spatio-temporal patterns of associations and the social network structure of the wild boar Sus scrofa population in Białowieża National Park, Poland, which offered a unique opportunity to understand wild boar social interactions away from anthropogenic factors. We used a combination of telemetry data and genetic information to examine the impact of kinship on network cohesion and the strength of social bonds. Relatedness and spatial proximity between individuals were positively related to the strength of social bond. Consequently, the social network was spatially and genetically structured with well-defined and cohesive social units. However, spatial proximity between individuals could not entirely explain the association patterns and network structure. Genuine, kin-targeted, and temporarily stable relationships of females extended beyond spatial proximity between individuals while males interactions were short-lived and not shaped by relatedness. The findings of this study confirm the matrilineal nature of wild boar social structure and show how social preferences of individuals translate into an emergent socio-genetic population structure.

Item Type:Article
ID Code:9892
Status:Published
Refereed:Yes
Uncontrolled Keywords:Wild boar social structure, Sus scrofa population, matrilineality, kin structures
Subjects:Area 05 - Scienze biologiche > BIO/05 Zoologia
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze della Natura e del Territorio
Publisher:Public Library of Science
eISSN:1932-6203
Copyright Holders:© 2014 Podgórski et al.
Deposited On:20 Jun 2014 09:19

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